Document:

Ford Motor Credit Company
                                One American Road
                            Dearborn, Michigan 48126

                                                                  August 1, 2001

Ford Credit Floorplan Master Owner Trust A
c/o The Bank of New York, as Owner Trustee
101 Barclay Street
Floor 12E
New York, New York  10286
Attention:  Corporate Trust Department

                  Re:      Ford Credit Floorplan Master Owner Trust A, Series
                           2001-2 Transaction

                  The purpose of this letter agreement is to confirm the terms
and conditions of the Transaction entered into on the Trade Date specified below
(the "Transaction") between Ford Motor Credit Company ("Party A") and Ford
Credit Floorplan Master Owner Trust A ("Party B"). This letter agreement
constitutes a "Confirmation," as referred to in the Master Agreement (as defined
below), with respect to this Transaction.

1. This Confirmation is subject to and incorporates the 1991 ISDA Definitions
(the "1991 Definitions") as supplemented by the 1998 Supplement to the 1991 ISDA
Definitions (the "Supplement") (collectively the "Definitions"), each as
published by the International Swaps and Derivatives Association, Inc. ("ISDA").
For these purposes, (i) all references in the 1991 Definitions to a "Swap
Transaction" will be deemed to include Transactions under this Confirmation and
the Master Agreement and (ii) all references in the 1991 Definitions to a
"Business Day" will be deemed references to a Local Business Day under this
Confirmation and the Master Agreement. In the event of any inconsistency between
the 1991 Definitions and this Confirmation, this Confirmation will prevail.

         Terms used herein and not defined herein or in the 1991 ISDA
Definitions will have the respective meanings assigned to them in the Series
2001-2 Indenture Supplement, dated as of August 1, 2001, between Party B and The
Chase Manhattan Bank, as Indenture Trustee for Party B's Series 2001-2 Floating
Rate Asset Backed Notes (the "Series 2001-2 Notes").

         This Confirmation supplements, forms a part of and is subject to the
ISDA Master Agreement, dated as of August 1, 2001, between Party A and Party B
(the agreement, as amended and supplemented from time to time, being referred to
herein as the "Master Agreement"). All provisions contained in, or incorporated
by reference to, the Master Agreement will govern the Transaction referenced in
this Confirmation except as expressly modified herein.

2.       The terms of the particular Transaction to which this Confirmation
         relates are as follows:

Party A:                               Ford Motor Credit Company.

Party B:                               Ford Credit Floorplan Master Owner
                                       Trust A

Notional Amount A:                     USD  1,936,340,000  on the  Effective
                                       Date and for any Payment Date thereafter,
                                       USD 1,936,340,000 less all payments of
                                       principal to holders of Series 2001-2
                                       Class A Notes through the immediately
                                       preceding "distribution date".

Notional Amount B:                     USD 63,660,000 on the Effective Date and
                                       for any Payment Date thereafter, USD
                                       63,660,000 less all payments of principal
                                       to holders of Series 2001-2 Class B Notes
                                       through the immediately preceding
                                       "distribution date".

Trade Date:                            July 18, 2001

Effective Date:                        August 1, 2001

Termination Date:                      July 15, 2008 subject to adjustment in
                                       accordance  with the Following Business
                                       Day Convention.

Party A Floating Amounts:

              Floating Rate Payer:     Party A.

              Floating Rate Payer
              Payment Dates:           September  15,  2001  and on the 15th day
                                       of each  month  thereafter until the
                                       Termination  Date,  subject to the
                                       Following  Business Day Convention.

Floating Amounts payable by Party A hereunder will be comprised of the Party A:
Class A Note Floating Amount Payments plus the Party A: Class B Note Floating
Amount Payments, as set forth below.

Party A: Class A Note Floating Amount Payments:

              Floating Amounts for
              the First Floating Rate
              Payer A Payment Date:    The product of (i) Notional Amount A,
                                       (ii) 1 month LIBOR on July 30, 2001 plus
                                       14 basis points from and including the
                                       Effective Date to but excluding the first
                                       Floating Rate Payer A Payment Date and
                                       (iii) the applicable Floating Rate A Day
                                       Count Fraction

              Reset Dates:             The first day of each Calculation Period.

              Reset Determination
              Date:                    Two "London business days" prior to the
                                       Reset Date.

              Calculation Period:      From the Floating  Rate Payer A Payment
                                       Date through and including the day
                                       immediately  preceding the  following
                                       Floating Rate Payer A Payment Date.

              Floating Rate A:         USD-LIBOR-BBA.

              Designated Maturity:     1 month.

              Spread:                  Plus 14 basis points

              Floating Rate A Day
              Count Fraction:          Actual/360

Party A: Class B Note Floating Amount Payments:

              Floating Amounts for
              the First Floating Rate
              Payer A Payment Date:    The product of (i) Notional Amount B,
                                       (ii) 1 month LIBOR on July 30, 2001
                                       plus 41 basis points from and including
                                       the Effective Date to but excluding the
                                       first Floating Rate Payer A Payment Date
                                       and (iii) the applicable Floating Rate A
                                       Day Count Fraction.

              Reset Dates:             The first day of each Calculation Period.

              Reset Determination
              Date:                    Two "London business days" prior to the
                                       Reset Date.

              Calculation Period:      From the Floating  Rate Payer A Payment
                                       Date  through and  including the day
                                       immediately  preceding the  following
                                       Floating Rate Payer A Payment Date.

              Floating Rate A:         USD-LIBOR-BBA.

              Designated Maturity:     1 month.

              Spread:                  Plus 41 basis points

              Floating Rate A Day
              Count Fraction:          Actual/360

Party B Floating Amounts:

              Initial Exchange
              Amount:                  USD 24,648,000

              Initial Exchange
              Date:                    August 1, 2001

Notwithstanding anything to the contrary in the 1991 ISDA Definitions or the
Master Agreement, on any Floating Rate Payer B Payment Date, Payer B will pay
the lesser of the amounts due on such Floating Rate Payer B Payment Date under
the Party B: First Floating Rate Swap and the Party B: Second Floating Rate
Swap, each described below.

The Party B: First Floating Rate Swap has the following terms:

              Floating Rate Payer:          Party B.

              Floating Rate Payer B
              Period End Dates:             August  31,  2001,  and the last day
                                            of each month  thereafter  until
                                            June 30, 2008.

              Floating Rate Payer B
              Payment Dates:                Payment Dates: September 17, 2001,
                                            and thereafter Delayed Payment will
                                            apply and such Payment Dates will be
                                            the 15th day of each month
                                            thereafter until the Termination
                                            Date, subject to the Following
                                            Business Day Convention.

              Floating Amount for
              the First Floating
              Rate Payer B Payment
              Date:                         The product of (i) Notional Amount A
                                            plus Notional Amount B, (ii) the
                                            Weighted Average of the Prime Rate
                                            (as defined below) on the Reset
                                            Dates in the month of August 2001,
                                            (as if the Calculation Period were
                                            such month), and (iii) 30/360.

              Floating Rate B
              Option:                       The Prime Rate (as defined below).

              Designated Maturity:          1 month.

              Floating Rate B Day
              Count Fraction:               30/360

              Reset Dates:                  Each  Friday  of  each  calendar
                                            month,  subject  to  the  Following
                                            Business Day Convention.

              Method of Averaging:          Weighted Average.

The Party B: Second Floating Rate Swap will have the following terms:

              Floating Rate Payer:          Party B

              Floating Rate Payer B
              Payment Dates:                September 17, 2001 and on the 15th
                                            day of each month thereafter until
                                            the Termination Date, subject to the
                                            Following Business Day Convention.

              Floating Amount for
              the First Floating Rate
              Payer B Payment Date:         The product of (i) Notional Amount A
                                            plus Notional Amount B, (ii) 1 month
                                            LIBOR on July 30,  2001,  effective
                                            August 1, 2001,  and (iii) 30/360.

              Reset Date:                   The first day of each Calculation
                                            Period.

              Reset Determination
              Date:                         Two "London business days" prior to
                                            the Reset Date.

              Calculation Period:           From the Floating  Rate Payer B
                                            Payment  Date  through and
                                            including the day  immediately
                                            preceding the  following  Floating
                                            Rate Payer B Payment Date.

              Floating Rate:                USD-LIBOR-BBA.

              Designated Maturity:          1 month.

              Spread:                       Not applicable.

              Floating Rate B Day
              Count Fraction:               30/360

<PAGE>

3.      Account Details and
        Settlement Information:

Payments to Party A:                        The Chase Manhattan Bank, in favor
                                            of Ford Motor Credit Company's
                                            Treasurer's Account

Bank:                                       The Chase Manhattan Bank

ABA Number:                                 021-000-021

Account Number:                             144008570

Party A Notice Address:                     Ford Motor Credit Company
                                            One American Road
                                            Dearborn, Michigan 48126
                                            Attn: Securitization Operations
                                            Manager
                                            Facsimile No.: 313-322-3349

with a copy to:                             Ford Motor Credit Company
                                            One American Road
                                            Dearborn, Michigan 48121-1732
                                            Attn: Corporate Secretary
                                            Facsimile No.: 313-845-4294

Payments to Party B:                        The Chase  Manhattan  Bank in favor
                                            of Ford Credit  Floorplan  Master
                                            Owner Trust A

Bank                                        The Chase Manhattan Bank

ABA Number:                                 021-000-021

Account Number:                             507951883

Party B Notice Address:                     Ford Credit Floorplan Master Owner
                                            Trust A
                                            The Bank of New York, as Owner
                                            Trustee
                                            101 Barclay Street
                                            New York, New York 10286
                                            Attention: Corporate Trust
                                            Administration
                                            Facsimile No. 212-815-5544

with a copy to:                             Ford Motor Credit Company
                                            One American Road
                                            Dearborn, Michigan 48121-1732
                                            Attn: Corporate Secretary
                                            Facsimile No.: 313-845-4294

                                            The Chase Manhattan, as Indenture
                                            Trustee
                                            450 West 33rd Street, 14th Floor
                                            New York, New York 10001
                                            Attn: Michael A. Smith
                                            Facsimile No.: 212-946-8302/8552

4. "Prime Rate" will mean for a Reset Date the median of the rates of interest
publicly announced effective on the second Thursday next preceding such Reset
Date by each of Bank of America, N.A., Bank One, N.A., The Chase Manhattan Bank
and Citibank, N.A. (and their respective successors) as its U.S. Dollar "prime
rate" or "base rate" for that Reset Date, less 1.50% (i.e., 150 basis points).
In the event any of the foregoing banks ceases to exist, then the parties will
make such adjustments to the definition of Prime Rate as they agree are
appropriate.

<PAGE>

         Please confirm that the foregoing correctly sets forth the terms of our
agreement by executing a copy of this Confirmation enclosed for that purpose and
returning it to us. This Confirmation may be executed in several counterparts,
each of which will be deemed an original but all of which together will
constitute one and the same instrument.

                                    Very truly yours,

                                    FORD MOTOR CREDIT COMPANY

                                    By:     __________________________
                                    Name:   __________________________
                                    Title:  __________________________

Accepted and confirmed as of the date first above written:

FORD CREDIT FLOORPLAN MASTER OWNER TRUST A
By:  THE BANK OF NEW YORK, as Owner Trustee

     By:    __________________________
     Name:  __________________________
     Title: __________________________<PAGE>   1

                                                                    EXHIBIT 10.1

                                  OFFICE LEASE

                        LANDLORD: FOOTHILL-OPERON I, LLC

                     TENANT: ECLIPSE SURGICAL TECHNOLOGIES,
                            a California corporation

<PAGE>   2

                                  OFFICE LEASE
                                Table of Contents

<TABLE>
<CAPTION>
Section                                                                         Page
  No.   Title                                                                    No.
------- -------------------------------------------------------------------     ----
<S>     <C>                                                                     <C>
  1.    Terms and Conditions ..............................................       1
  2.    Lease of Premises .................................................       3
  3.    Common Areas ......................................................       4
  4.    Term ..............................................................       5
  5.    Rent ..............................................................       5
  6.    Operating Expenses ................................................       5
  7.    Security Deposit ..................................................       9
  8.    Use ...............................................................      10
  9.    Payments and Notices ..............................................      10
  10.   Brokers ...........................................................      10
  11.   Surrender; Holding Over ...........................................      11
  12.   Taxes on Tenant's Property ........................................      11
  13.   Condition Of Premises; Repairs ....................................      12
  14.   Alterations .......................................................      12
  15.   Liens .............................................................      14
  16.   Assignment and Subletting .........................................      14
  17.   Entry by Landlord .................................................      16
  18.   Utilities and Services ............................................      17
  19.   Indemnification and Exculpation ...................................      19
  20.   Damage or Destruction .............................................      19
  21.   Eminent Domain ....................................................      21
  22.   Tenant's Insurance ................................................      22
  23.   Landlord's Insurance ..............................................      23
  24.   Waivers of Subrogation ............................................      24
  25.   Tenant's Default and Landlord's Remedies ..........................      24
  26.   Landlord's Default ................................................      26
  27.   Subordination .....................................................      26
  28.   Estoppel Certificate ..............................................      27
  29.   Performance by Tenant; Interest and Late Charges ..................      27
  30.   Cure Rights of Landlord's Mortgagees and Lessors ..................      28
  31.   Transfer of Owner's Interest ......................................      28
  32.   Quiet Enjoyment ...................................................      28
  33.   Parking ...........................................................      28
  34.   Limitation on Landlord's Liability ................................      29
  35.   Hazardous Materials ...............................................      29
  36.   Miscellaneous .....................................................      31
</TABLE>

<TABLE>
<CAPTION>
                                                                           Section
EXHIBITS                                                               First Reference
--------                                                               ---------------
<S>      <C>                                                                <C>
A.       Site Plan .................................................         1.5
A-2.     Parking ...................................................        33.1
B.       Floor Plan ................................................         1.7
C.       Square Footage Determination ..............................         1.6
D.       Work Letter Agreement .....................................         1.7
E.       Sample Form of Notice of Lease Term Dates .................         4.1
F.       Rules and Regulations .....................................         8.1
G.       Sample Form of Tenant Estoppel Certificate ................        28.1
H.       Parking Rules and Regulations .............................        34.3
I.       Warrants ..................................................        1.16
J.       Signage ...................................................       36.12
</TABLE>

                                        i
<PAGE>   3

RIDERS

No. 1    Annual Basic Rent
No. 2    Outside Commencement Date

                                       ii
<PAGE>   4

                                  OFFICE LEASE

                This LEASE is made as of the 7TH day of May, 2001, by and
between Landlord and Tenant:

                              W I T N E S S E T H:

1. TERMS AND CONDITIONS. For the purposes of this Lease, the following terms
shall have the following definitions and meanings:

        1.1 Landlord:               FOOTHILL-OPERON I, LLC,
                                    a California limited liability company

        1.2 Landlord's Address:     Foothill-Operon I, LLC
                                    4 Upper Newport Plaza Drive, #100
                                    Newport Beach, California 92660
                                    Attn: Robert J.V Searles

        With a copy to:             Latham & Watkins
                                    650 Town Center Drive, #2000
                                    Costa Mesa, California 92626
                                    Attn: Kenneth A. Wolfson

        1.3 Tenant:                 Eclipse Surgical Technologies,
                                    a California corporation

        1.4 Tenant's Address:       26632 Towne Centre Drive, Suite 320
                                    Foothill Ranch, CA 92610
                                    Attn: Controller

        1.5 Site: Towne Centre Plaza located at 26632 - 26672 Towne Centre Drive
in the City of Foothill Ranch, County of Orange, State of California, as shown
on the site plan attached hereto as Exhibit "A."

        1.6 Building: A three (3) story office building located on the Site,
containing approximately 67,906 rentable square feet ("RSF") (subject to
adjustment as set forth in Exhibit "C"), whose address is 26632 Towne Centre
Drive Suite 320 and Suite 260, Foothill Ranch, 92610, California (the
"Building").

        1.7 Premises: The Premises consists of approximately 15,945 usable
square feet ("USF") and 17,845 rentable square feet RSF, 7,814 rentable square
feet RSF on the 2nd Floor and 10,031 rentable square feet RSF on the 3rd Floor
as generally shown on the floor plan attached hereto as Exhibit "B." The actual
layout and square footage of the Premises shall be subject to the Final Plan as
defined in Exhibit "B" and architectural measurement of the Premises, according
to Exhibit "C."

        1.8 Rentable Square Feet: See Exhibit "C."

        1.9 Commencement Date: See Exhibit "D."

        1.10 Commencement and Occupancy: Commencement date is anticipated to be
October 15, 2001. Occupancy date for the Third Floor is anticipated to be July
15, 2001. Tenant shall have immediate occupancy of the existing office suite
250, 879 sq.ft., on the Second Floor upon execution of the lease and within
approximately 35 days of the date the lease is executed Tenant shall have early
temporary occupancy of 7,814 RSF of lighted finished ceiling, carpeted,
electrical, phone and computer outlets with shell space on the Second Floor
(rent free). Upon substantial completion and temporary certificate of occupancy
of the Tenant Improvements on the Third Floor, (estimated to be July 15, 2001)
Tenant's early occupancy of three months shall commence for the entire leased
premises (Second and Third floor). The Second Floor final Tenant Improvements,
per attached Exhibit B, shall be completed within 45 days after Tenant vacates
the temporary improvements on the Second Floor.

<PAGE>   5

        1.11 Term: Sixty (60) months; provided, however, that if the last day of
such period is not the last day of a calendar month, the Term shall be extended
to the last day of the calendar month during which the expiration of such period
occurs.

        1.12 OPTION TO EXTEND: Subject to Tenant providing Landlord six (6)
months prior written notice and Tenant is not in default of any terms of the
Lease, Tenant shall have the Option to Extend the Lease for all space then under
lease by Tenant in the Building, for one (1) additional term of five (5) years.
The base rental rate shall be the then current "fair market" rental rates for
like space in the Foothill Ranch Office Market Place. If Tenant objects to
Landlord's determination of fair market rental, Tenant shall notify Landlord in
writing within ten (10) days of notice of Landlord's determination, that Tenant
disagrees with Landlord's determination of fair market rental. In the event that
Landlord and Tenant are unable to agree upon the fair market rental value of the
Premises, then the fair market rental value shall be determined by appraisal as
set forth below. Until the appraisal procedures are final, Tenant shall pay base
rent in the amount of Landlord's determination. After the determination of the
appraisers is final, Landlord shall promptly reimburse Tenant for any
overpayment by Tenant of base rent owing for prior months, and Tenant shall
promptly make payment to Landlord for any underpayment of base rent owing for
prior months. If Landlord and Tenant are unable to agree upon the fair market
rental value of the Premises, then Landlord shall cause an M.A.I. appraiser (the
"First Appraiser") to determine such fair market rental value. If such appraisal
is deemed unacceptable by Tenant, then Tenant shall so advise Landlord in
writing within ten (10) days after receipt of such appraisal and Tenant shall
engage another M.A.I. appraiser (the "Second Appraiser") to appraise the
Premises. The First Appraiser and the Second Appraiser shall together choose a
third M.A.I. appraiser (the "Third Appraiser"). If the appraisal determined by
the Third Appraiser is greater than the highest appraisal or lower than the
lowest appraisal given by the First Appraiser and the Second Appraiser, then the
fair market rental value shall be the amount determined by the appraisal given
by the First Appraiser or the Second Appraiser, as applicable, which is closest
in amount to the appraisal given by the Third Appraiser. Otherwise, the fair
market rental value shall be the average of the amount determined by the three
appraisals. All other terms and conditions of the initial lease shall remain the
same for the extended term of the lease. The cost of all appraisals shall be
borne by Tenant if the fair market rental value of the Premises determined by
the foregoing appraisal process is within five percent (5%) of Landlord's
original determination; otherwise the cost of all appraisals shall be borne
equally by Landlord and Tenant.

        1.13 Annual Basic Rent: See Rider No. 1. Annual Basic Rent is payable in
monthly installments ("Monthly Basic Rent"). The Annual Basic Rent is subject to
adjustment as provided in Exhibit "C."

        1.14 Tenant's Proportionate Share: Tenant's Proportionate Share shall
consist of two (2) separate percentages:

                (a) 26.27%, which is Tenant's Proportionate Share of the
Building, which amount is equal to a fraction, the numerator of which is the
Rentable Square Feet of the Premises (as set forth in Subparagraph 1.7 above),
and the denominator of which is the Rentable Square Feet of the Building (as set
forth in Subparagraph 1.6 above); and

                (b) 8.76%, which is Tenant's Proportionate Share of the Project,
which amount is equal to a fraction, the numerator of which is the Rentable
Square Feet of the Premises (as set forth in Subparagraph 1.7 above), and the
denominator of which is the rentable Square Feet of the Project (as set forth in
Subparagraph 1.22 below). (See Exhibit "C")

        1.15 Landlord's Contribution to Operating Expenses: Tenant's
Proportionate Share of Operating Expenses incurred by Landlord during the Base
Year, which shall consist of two (2) separate components:

                (a) with respect to the Building Operating Expenses, Tenant's
Proportionate Share of the Building (as set forth in Subparagraph 1.14(a)
above), multiplied by the Building Operating Expenses incurred during the Base
Year; and

                                       2
<PAGE>   6

                (b) with respect to the Project Operating Expenses, Tenant's
Proportionate Share of the Project (as set forth in Subparagraph 1.14(b) above),
multiplied by the Project Operating Expenses.

As used herein, the "Base Year" shall mean the calendar year of 2001 to reflect
95% occupancy.

        1.16 Security Deposit: $100,000. Tenant shall pay the First month's rent
at the execution of the lease ($41,489.63).

                a. Warrants: Tenant agrees to grant Landlord 75,000 Warrants of
Eclipse Surgical Technologies at the closing price on the date which Landlord
and Tenant have executed the Lease Agreement. The Warrants vest immediately.
Additional information outlining the exercise of the Warrants are attached per
Exhibit I.

        1.17 Permitted Use: General Office, including ancillary sales (no
retail), training, administration and any other legal use consistent with the
character of the building.

        1.18 Brokers: CB Richard Ellis representing Landlord and Tenant.
Landlord and Tenant hereby confirm that they have been advised of this dual
representation in a timely manner and consent to the same. Landlord shall be
solely responsible for the payment of all leasing commissions pursuant to
listing agreements in place with Landlord.

        1.19 Interest Rate: The lesser of: (a) the rate announced from time to
time by Bank of America (or if the entity named herein ceases to exist or ceases
to publish such rate, by the largest (as measured by deposits) chartered bank
operating in the state in which the Building is located) as its "prime rate" or
"reference rate," plus three percent (3%); or (b) the maximum rate permitted by
law.

        1.20 Leasehold Improvements: The tenant improvements installed or to be
installed for the Premises as described in the Work Letter Agreement attached
hereto as Exhibit "D."

        1.21 Parking: Four unreserved parking spaces per each 1,000 rentable
square feet leased by Tenant. Tenant shall have the right to (5) five reserved
parking spaces adjacent to the subject per the attached Exhibit A-2. The cost
for reserved parking signs, as approved by Landlord, shall be paid by the
Tenant.

        1.22 Project: The Site, the three (3), three (3)-story buildings located
thereon (including the Building), the Common Areas, the landscaping, parking
facilities and all other improvements and facilities now or subsequently located
on the Site from time to time, known as Towne Centre Plaza. The aggregate
rentable square feet of the three (3) office buildings in the Project (including
the Building) is approximately 203,718 rentable square feet. (See Exhibit "C.")

2. LEASE OF PREMISES. Landlord hereby leases to Tenant, and Tenant hereby leases
from Landlord, the Premises described in Subparagraph 1.7 above, improved or to
be improved with the Leasehold Improvements. Such lease is upon, and subject to,
the terms, covenants and conditions herein set forth and each party covenants,
as a material part of the consideration for this Lease, to keep and perform
their respective obligations under this Lease.

                2.1 FIRST OPPORTUNITY TO LEASE. Tenant shall have the First
Opportunity to Lease any space on the same floor (Second and Third Floor) that
may become available during the initial term of the lease and any extensions
thereafter. Tenant acknowledges and agrees, however, that during any extended
period, its "First Opportunity to Lease" shall be subject and subordinate to
Pacific Life's (its successor's or assign's) first opportunity to lease space on
the second and third floor and Marshack, Shulman, Hodges & Friedman on the third
floor. Tenant's "First Opportunity to Lease" during any extended term shall have
no effect unless and until Pacific Life's (its successor's or assign's) first
opportunity to lease such space expires and is no longer of any effect. This
First Opportunity to Lease shall be at the then current "fair market" rental
rates for like space in the Towne Centre Plaza. If Tenant objects to Landlord's
determination of fair market rental, Tenant shall notify Landlord in writing
within ten (10) days of notice of Landlord's determination, that Tenant
disagrees with Landlord's determination of fair market rental. In the event that
Landlord and Tenant are unable to agree upon the fair market rental value of the
such space, then the fair market rental value shall be determined by appraisal

                                       3
<PAGE>   7

as set forth below. Until the appraisal procedures are final, Tenant shall pay
base rent in the amount of Landlord's determination. After the determination of
the appraisers is final, Landlord shall promptly reimburse Tenant for any
overpayment by Tenant of base rent owing for prior months, and Tenant shall
promptly make payment to Landlord for any underpayment of base rent owing for
prior months. If Landlord and Tenant are unable to agree upon the fair market
rental value of the demised premises, then Landlord shall cause an M.A.I.
appraiser (the "First Appraiser") to determine such fair market rental value. If
such appraisal is deemed unacceptable by Tenant, then Tenant shall so advise
Landlord in writing within ten (10) days after receipt of such appraisal and
Tenant shall engage another M.A.I. appraiser (the "Second Appraiser") to
appraise the demised premises. The First Appraiser and the Second Appraiser
shall together choose a third M.A.I. appraiser (the "Third Appraiser"). If the
appraisal determined by the Third Appraiser is greater than the highest
appraisal or lower than the lowest appraisal given by the First Appraiser and
the Second Appraiser, then the fair market rental value shall be the amount
determined by the appraisal given by the First Appraiser or the Second
Appraiser, as applicable, which is closest in amount to the appraisal given by
the Third Appraiser. Otherwise, the fair market rental value shall be the
average of the amount determined by the three appraisals. Tenant's First
Opportunity to Lease is subject to Tenant's written acceptance within 10 days of
notification by Landlord of the availability of space and terms for lease of
such space. The cost of all appraisals shall be borne by Tenant if the fair
market rental value of the Premises determined by the foregoing appraisal
process is within five percent (5%) of Landlord's original determination;
otherwise the cost of all appraisals shall be borne equally by Landlord and
Tenant.

3. COMMON AREAS.

        3.1 Definitions; Tenant's Rights. During the Term of this Lease and any
extensions thereafter, Tenant shall have the nonexclusive right to use, in
common with Landlord, other tenants in the Project and landlord and tenants of
the adjacent parcels under the Operation and Reciprocal Easement Agreement
recorded October 15, 1997 as Instrument No. 19970516456, as amended, and subject
to the Rules and Regulations referred to in Paragraph 8 below, those portions of
the Project (the "Project Common Areas") not leased or designated for lease to
tenants that are provided for use in common by (or by the sublessees, agents,
employees, customers or licensees of) Landlord, Tenant and any another tenants
of the Project, whether or not those areas are open to the general public. The
Project Common Areas shall include, without limitation, any fixtures, systems,
decor, facilities and landscaping contained, maintained or used in connection
with those areas, and shall be deemed to include any sidewalks adjacent to the
Project, any pedestrian walkway system, parking or other facilities open to the
general public. The common areas appurtenant to the Building shall be referred
to herein as the "Building Common Areas" and shall include the following areas:

                (a) the common entrances, lobbies, restrooms on multi-tenant
floors, elevators, stairways and access ways, loading docks, ramps, drives and
platforms and any passageways and serviceways thereto, and the common pipes,
conduits, wires and appurtenant equipment serving the Premises; and

                (b) the parking structure and parking areas (subject to
Paragraph 33 below), loading and unloading areas, trash areas, roadways,
sidewalks, walkways, parkways, driveways and landscaped areas and plaza area
appurtenant to the Building.

                The Building Common Areas and the Project Common Areas shall be
referred to herein collectively as the "Common Areas."

        3.2 Landlord's Reserved Rights. Landlord reserves the right from time to
time to use any of the Common Areas and to do any of the following, as long as
such acts do not unreasonably interfere with Tenant's use of or access to the
Premises:

                (a) expand the Building and construct or alter other buildings
or improvements on the Site;

                (b) make any changes, additions, improvements, repairs or
replacements in or to the Project, the Site, the Common Areas and/or the
Building (including the Premises if required to do so by any law or regulation)
and the fixtures and equipment thereof, including, without limitation: (i)
maintenance, replacement and relocation of pipes, ducts, conduits, wires and
meters, and (ii) changes in the location, size, shape and number of driveways,
entrances,

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<PAGE>   8

stairways, elevators, loading and unloading areas, ingress, egress, direction of
traffic, landscaped areas and walkways, and subject to Paragraph 33 below,
parking spaces and parking areas;

                (c) close temporarily any of the Common Areas while engaged in
making repairs, improvements or alterations to the Project, Site and/or Building
so long as Tenant is provided with reasonable access to the Premises and
reasonable parking; and

                (d) perform such other acts and make such other changes with
respect to the Project, Site, Common Areas and Building as Landlord may, in the
exercise of sound business judgment, deem to be appropriate.

4. TERM.

        4.1 Term; Notice of Lease Dates. The Term of this Lease shall be for the
period designated in Subparagraph 1.11 commencing on the Commencement, and
ending on the expiration of such period, unless the Term is sooner terminated as
provided in this Lease.

5. RENT.

        5.1 Basic Rent. Tenant agrees to pay Landlord, as basic rent for the
Premises, the Annual Basic Rent designated in Subparagraph 1.13. The Annual
Basic Rent shall be paid by Tenant in twelve (12) equal monthly installments of
Monthly Basic Rent designated in Subparagraph 1.13 in advance on the first day
of each and every calendar month during the Term. Tenant shall pay the first
full month's Monthly Basic Rent concurrently with the execution of this Lease.
Annual Basic Rent for any partial month shall be prorated in the proportion that
the number of days this Lease is in effect during such month bears to the actual
number of days in such month.

        5.2 Additional Rent. All amounts and charges payable by Tenant under
this Lease in addition to the Annual Basic Rent described in Subparagraph 5.1
above (including, without limitation, payments for insurance, repairs and
parking, and Excess Expenses as provided in Paragraph 6) shall be considered
additional rent for the purposes of this Lease, and the word "rent" in this
Lease shall include such additional rent unless the context specifically or
clearly implies that only the Annual Basic Rent is referenced. The Annual Basic
Rent and additional rent shall be paid to Landlord as provided in Paragraph 9,
without any prior demand therefor and without any deduction or offset whatever
unless as otherwise stated elsewhere in this Lease, in lawful money of the
United States of America.

6. OPERATING EXPENSES.

        6.1 Excess Expenses. Tenant shall pay to Landlord, in the manner and at
the times set forth in the following provisions of this Paragraph 6, the amount
by which Tenant's Proportionate Share of Operating Expenses (which consists of
two (2) separate components as set forth in Subparagraph 1.14 above) exceeds
Landlord's Contribution to Operating Expenses (which consists of two (2)
separate components as set forth in Subparagraph 1.15 above). Such excess
amounts shall be collectively referred to in this Paragraph 6 as the "Excess
Expenses."

        6.2 Definition of Operating Expenses. As used in this Lease, the term
"Operating Expenses" shall mean collectively, the "Project Operating Expenses"
and the "Building Operating Expenses." As used herein, "Building Operating
Expenses" shall include all costs and expenses for janitorial services for the
Building, all costs and expenses for utilities which are separately metered to
the Building, and all other costs and expenses of operation and maintenance of
the Building as determined by generally accepted accounting principles
consistently applied, which Landlord may, from time to time, separately allocate
to the Building, all of which shall be calculated assuming the Building were the
greater of ninety-five percent (95%) occupied or the actual level of occupancy
for the calendar year in question if the Building is more than ninety-five
percent (95%) occupied during such calendar year. As used herein, "Project
Operating Expenses" shall include all costs and expenses of operation and
maintenance of the Project, as determined by generally accepted accounting
principles consistently applied, calculated assuming all three (3) buildings in
the Project are the greater of ninety-five percent (95%) occupied or the actual
level of occupancy for the calendar year in question if the three (3) buildings
in the Project are more than ninety-five percent (95%) occupied during such
calendar year, excluding, however, the Building Operating Expenses for the three
(3) buildings in the Project. Project Operating Expenses shall include the
following costs by way of illustration but

                                       5
<PAGE>   9

not limitation: (a) Real Property Taxes and Assessments (as defined in
Subparagraph 6.4 below) and any taxes or assessments imposed in lieu thereof;
(b) any and all assessments imposed with respect to the Project pursuant to any
covenants, conditions and restrictions affecting the Project and/or the
Reciprocal Easement Agreement; (c) water and sewer charges and the costs of
electricity, heating, ventilating, air conditioning and other utilities; (d)
utilities surcharges and any other costs, levies or assessments resulting from
statutes or regulations promulgated by any governmental authority in connection
with the use or occupancy of the Project or the parking facilities serving the
Project; (e) costs of insurance obtained by Landlord pursuant to Paragraph 23 of
this Lease, including any deductibles paid by Landlord; (f) waste disposal and
janitorial services; (g) security; (h) labor; (i) costs incurred in the
management of the Project, including, without limitation: (1) supplies, (2)
wages and salaries (and payroll taxes and similar governmental charges related
thereto) of employees at the level of Senior Property Manager or higher used
directly in the management, operation and maintenance of the Project, (3)
Project management office rental (if such management office is located on the
Project), provided that if such office is utilized to manage more properties
than the Project, the amount of rental for such office shall be equitably
apportioned amongst such properties, and further provided that the amount of
rental for such office does not exceed the fair market rental value for such
office in comparable suburban Class A office buildings in South Orange County
and excluding any portion of such office which is occupied principally for
marketing purposes; and (4) a management/administrative fee consistent with
similar buildings in South Orange County, but in no event to exceed five percent
(5%) of the annual gross revenues of the Project exclusive of the proceeds of
financing or a sale of the Project; (j) supplies, materials, equipment and
tools; (k) repair and maintenance of the elevators and the structural portions
of the improvements in the Project, including the plumbing, heating,
ventilating, air-conditioning and electrical systems installed or furnished by
Landlord; (l) maintenance, costs and upkeep of all parking and Common Areas; (m)
depreciation on a straight line basis and rental of personal property used in
maintenance; (n) amortization on a straight line basis over the useful life of
all costs of a capital nature (including, without limitation, capital
improvements, capital replacements, capital repairs, capital equipment and
capital tools): (1) reasonably intended to produce a reduction in operating
charges or energy consumption provided said reductions will be realized during
Tenant's tenancy; and (2) required after the Commencement Date of this Lease
under any governmental law or regulation that was not applicable to the Project
as of the Commencement Date of this Lease; (o) costs and expenses of gardening
and landscaping; (p) maintenance of signs (other than signs of tenants); (q)
personal property taxes levied on or attributable to personal property used in
connection with the Project; (r) reasonable accounting, audit, verification,
legal and other consulting fees; and (s) costs of repairs, resurfacing,
repairing, maintenance, painting, lighting, cleaning, refuse removal, security
and similar items, including appropriate reserves.

        6.3 Exclusions from Operating Expenses. Notwithstanding the provisions
of Subparagraph 6.2 above to the contrary, "Operating Expenses" shall not
include:

                (a) any ground lease rental;

                (b) costs incurred by Landlord for the repair of damage to the
Project to the extent that Landlord is reimbursed by insurance (or would have
been reimbursed had Landlord not self-insured and carried the insurance coverage
required to be carried by Landlord under this Lease) or condemnation proceeds by
warrantors or other similar third persons;

                (c) costs, including permit, license and inspection costs,
incurred with respect to the installation of tenant improvements for tenants in
the Project (including the original Leasehold Improvements for the Premises), or
incurred in renovating or otherwise improving, decorating, painting or
redecorating space for specific tenants of the Project, including space planning
and interior design costs and fees;

                (d) marketing costs, including, without limitation, brokerage
commissions, finders' fees, attorneys' fees, space planning costs and other
costs incurred by Landlord in leasing or attempting to lease space in the
Project;

                (e) attorneys' fees and other costs and expenses incurred in
connection with negotiations or disputes with present or prospective tenants or
other occupants of the Project; provided, however, that Operating Expenses shall
include those attorneys' fees and other costs and expenses incurred in
connection with negotiations, disputes or claims relating to items of Operating
Expenses, enforcement of rules and regulations of the Project, and such other
matters relating to the maintenance of standards required of Landlord under the
Lease;

                                       6
<PAGE>   10

                (f) interest, principal, points and fees on debt or amortization
on any mortgage, deed of trust or other debt encumbering the Project, or any
portion thereof;

                (g) expenses, charges or taxes in connection with services or
other benefits which are not offered to Tenant or for which Tenant is charged
directly but which are provided to another tenant free of charge;

                (h) overhead and profit increment paid to Landlord or to
subsidiaries or affiliates of Landlord for goods and/or services in the Building
or Project to the extent the same exceeds the costs of such goods and/or
services rendered by unaffiliated third parties on a competitive basis;

                (i) except for the management/administrative fee as provided in
Subparagraph 6.2(i)(4), herein above, Landlord's general corporate overhead and
general and administrative expenses;

                (j) any compensation paid to clerks, attendants or other persons
in commercial concessions operated by or on behalf of Landlord;

                (k) electric power costs for which any tenant directly contracts
with the local public service company or other supplier and is obligated to pay
for the same, provided that for determining the electric power costs component
of Operating Expenses, the square footage of any such tenant's leased premises
shall be excluded from the denominator used for calculating Tenant's
Proportionate Share;

                (l) costs arising from Landlord's charitable or political
contributions;

                (m) penalties incurred due to Landlord's failure to comply with
any applicable laws, rules, codes, regulations or other governmental
requirements, or any covenants, conditions and restrictions (or the like); and

                (n) any personal property taxes payable by Tenant or by other
tenants of the Project.

                Landlord agrees that since one of the purposes of Operating
Expenses and the gross up provision is to allow Landlord to require Tenant to
pay for the costs attributable to its Premises, Landlord agrees that (i)
Landlord will not collect or be entitled to collect Operating Expenses not
actually paid by Landlord in connection with the operation of the Building or
Project; (ii) Landlord shall make no profit from Landlord's collection of
Operating Expenses; and (iii) Tenant's obligation to pay its proportionate share
of any Real Property Taxes and Assessments shall be calculated as if Landlord
had paid same in the maximum number of installments permitted (inclusive of
interest charges, if any, payable to the taxing authority if Landlord had paid
same in the maximum number of installments permitted), even if Landlord elected
to make payment on a lump sum basis or otherwise.

        6.4 Definition of Real Property Taxes and Assessments. All Real Property
Taxes and Assessments shall be adjusted to reflect an assumption that the
buildings in the Project are fully assessed for real property tax purposes as
completed buildings ready for occupancy. As used in this Lease, the term "Real
Property Taxes and Assessments" shall mean: any form of assessment, license fee,
license tax, business license fee, commercial rental tax, levy, charge,
improvement bond, tax or similar imposition imposed by any authority having the
direct power to tax, including any city, county, state or federal government, or
any school, agricultural, lighting, drainage or other improvement or special
assessment district thereof, as against any legal or equitable interest of
Landlord in the Project, including the following by way of illustration but not
limitation:

                (a) any tax on Landlord's "right" to rent or "right" to other
income from the Premises or as against Landlord's business of leasing the
Premises;

                (b) any assessment, tax, fee, levy or charge in substitution,
partially or totally, of any assessment, tax, fee, levy or charge previously
included within the definition of real property tax, it being acknowledged by
Tenant and Landlord that Proposition 13 was adopted by the voters of the state
of California in June, 1978 election and that assessments, taxes, fees, levies
and charges may be imposed by governmental agencies for such services as fire
protection, street, sidewalk and road maintenance, refuse removal and for other
governmental services

                                       7
<PAGE>   11

formerly provided without charge to property owners or occupants. It is the
intention of Tenant and Landlord that all such new and increased assessments,
taxes, fees, levies and charges be included within the definition of "real
property taxes" for the purpose of this Lease;

                (c) Any assessment, tax, fee, levy or charge allocable to or
measured by the area of the Premises or other premises in the Project or the
rent payable by Tenant hereunder or other tenants of the Project, including,
without limitation, any gross receipts tax or excise tax levied by state, city
or federal government, or any political subdivision thereof, with respect to the
receipt of such rent, or upon or with respect to the possession, leasing,
operation, management, maintenance, alteration, repair, use or occupancy by
Tenant of the Premises, or any portion thereof but not on Landlord's other
operations;

                (d) any assessment, tax, fee, levy or charge upon this
transaction or any document to which Tenant is a party, creating or transferring
an interest or an estate in the Premises; and/or

                (e) any assessment, tax, fee, levy or charge by any governmental
agency related to any transportation plan, fund or system (including assessment
districts) instituted within the geographic area of which the Project is a part.

                If Landlord fails to contest the validity of any tax or
assessment which Landlord is legally entitled to contest, or if Landlord elects
not to contest any tax assessment within thirty (30) days of Tenant's request
that Landlord do so, Tenant shall have the right, in Tenant's or Landlord's
name, but at Tenant's sole cost and expense, to contest the validity of any tax
or assessment or assessed valuation of the Building by appropriate proceedings
timely instituted; provided that: (a) Tenant gives Landlord written notice of
Tenants' intention to do so prior to the date on which Tenant is obligated to
pay the next semi-annual installment of such taxes to the taxing authority; (b)
Tenant makes timely payment to Landlord of any Real Property Taxes and
Assessments payable by Tenant under this Lease; (C) no later than thirty (30)
days prior to the date on which Landlord is obligated to pay the next
semi-annual installment of such taxes to the taxing authority, Tenant requests
Landlord, in writing, to pay such taxes under protest; and Tenant diligently
prosecutes any such contest. Landlord shall, if requested by Tenant, cooperate
with Tenant in any such proceedings; provided, however, that Landlord shall not
be liable for any expenses whatsoever in connection therewith, and Tenant shall
protect, indemnify, and reimburse Landlord for all claims, loss, cost,
liability, expense, attorneys' fees or damages resulting therefrom. If Tenant
prevails in such tax contest, Landlord shall, within thirty (30) days following
Landlord's receipt of the refund of any overpaid taxes, pay to Tenant Tenant's
Proportionate Share of the net amount of any such overpaid taxes which were paid
by Tenant during the Lease Term, minus any expenses incurred in connection with
any such tax contest.

                Notwithstanding the foregoing provisions of this Subparagraph
6.4 above to the contrary, "Real Property Taxes and Assessments" shall not
include Landlord's federal or state income, franchise, inheritance or estate
taxes.

        6.5 Estimate Statement. By the first day of each calendar year during
the Term of this Lease, Landlord shall endeavor to deliver to Tenant a statement
("Estimate Statement" ) (and shall deliver such Estimate Statement by the
thirty-first (31st) day of each calendar year during the Term of this Lease)
estimating the Operating Expenses for the current calendar year and the
estimated amount of Excess Expenses payable by Tenant. Landlord shall have the
right during any calendar year to deliver a revised Estimate Statement showing
the Excess Expenses for such calendar year if Landlord determines that the
Excess Expenses are greater than those set forth in the original Estimate
Statement (or previously delivered revised Estimate Statement) for such calendar
year. The Excess Expenses shown on the Estimate Statement (or revised Estimate
Statement, as applicable) shall be divided into twelve (12) equal monthly
installments, and Tenant shall pay to Landlord, concurrently with the regular
monthly rent payment next due following the receipt of the Estimate Statement
(or revised Estimate Statement, as applicable), an amount equal to one (1)
monthly installment of such Excess Expenses multiplied by the number of months
from January in the calendar year in which such statement is submitted to the
month of such payment, both months inclusive (less any amounts previously paid
by Tenant with respect to any previously delivered Estimate Statement or revised
Estimate Statement for such calendar year); provided, however, that with respect
to the first Estimate Statement submitted, Tenant shall also pay the Excess
Expenses for those months, if any, during the Term which occurred prior to
January of the calendar year in which such first Estimate Statement is
submitted. Subsequent installments shall be paid concurrently with the regular
monthly rent

                                       8
<PAGE>   12

payments for the balance of the calendar year and shall continue until the next
calendar year's Estimate Statement (or current calendar year's revised Estimate
Statement) is received.

        6.6 Actual Statement. By the first day of April of each succeeding
calendar year during the Term of this Lease, Landlord shall endeavor to deliver
to Tenant a statement ("Actual Statement") (and shall deliver such Actual
Statement by the first day of May of each such calendar year during the Term of
this Lease) of the actual Operating Expenses and Excess Expenses for the
immediately preceding calendar year. If the Actual Statement reveals that Excess
Expenses were overstated or understated in any Estimate Statement (or revised
Estimate Statement) previously delivered by Landlord pursuant to Subparagraph
6.5 above, then within thirty (30) days after delivery of the Actual Statement,
Tenant shall pay to Landlord the amount of any such underpayment, or, Landlord
shall pay to Tenant (or credit against the next monthly rent falling due), the
amount of such overpayment, as the case may be.

        6.7 No Release. Any delay or failure by Landlord in delivering any
Estimate or Actual Statement pursuant to this Paragraph 6 shall not constitute a
waiver of its right to receive Tenant's payment of Excess Expenses, nor shall it
relieve Tenant of its obligations to pay Excess Expenses pursuant to this
Paragraph 6, except that Tenant shall not be obligated to make any payments
based on such Estimate or Actual Statement until thirty (30) days after receipt
of such statement, nor shall it relieve Landlord of its obligations to pay to
Tenant the amount of any such overpayment.

        6.8 Tenant's Audit Rights. If Tenant disputes the amount of Operating
Expenses (including Tenant's Base Year) set forth in any Actual Statement
delivered by Landlord, Tenant shall have the right, to be exercised, if at all,
not later than twelve (12) months following receipt of such Actual Statement
(twenty-four (24) months as it relates to the Base Year), to cause Landlord's
books and records with respect to the preceding calendar year to be audited, at
Tenant's expense. The amounts payable under Subparagraph 6.6 by Landlord to
Tenant or by Tenant to Landlord as the case may be shall be appropriately
adjusted on the basis of such audit. If Tenant's audit determines that actual
Operating Expenses have been overstated by more than four percent (4%), then
Landlord shall reimburse Tenant for the cost of such audit. Landlord shall be
required to maintain records of all Operating Expenses for three (3) years.
Should a dispute arise between the parties regarding the results of Tenant's
audit, either party may cause the dispute to be submitted to JAMS/ENDISPUTE
("JAMS") in Orange County, California, for binding arbitration. The arbitration
shall be conducted in accordance with the rules of practice and procedure of
JAMS and otherwise pursuant to the California Arbitration Act (Code of Civil
Procedures Section 1280 et. seq.). The arbitrator shall apportion the costs of
the arbitration, together with the attorneys' fees of the parties, in the manner
deemed equitable by the arbitrator, it being the intention of the parties that
the prevailing party ordinarily be entitled to recover its reasonable costs and
fees.

7. SECURITY DEPOSIT.

        7.1 Use of Deposit. Tenant, contemporaneously with the execution of this
Lease, has deposited with Landlord the sum set forth in Subparagraph 1.16 above,
receipt of which is hereby acknowledged by Landlord, said deposit being given to
secure the faithful performance by Tenant of all of the terms, covenants and
conditions of this Lease by Tenant to be kept and performed during the term
hereof. Tenant agrees that if Tenant shall fail to pay the rent or any other sum
herein required promptly when due, said deposit may, at the option of Landlord
(but Landlord shall not be required to), be applied to any rent or other sum due
and unpaid, and if Tenant violates any of the other terms, covenants and
conditions of this Lease, said deposit shall be applied to any damages suffered
by Landlord as a result of Tenant's default to the extent of the amount of the
damages suffered.

        7.2 No Waiver. Nothing contained in this Paragraph shall in any way
diminish or be construed as waiving any of Landlord's other remedies as provided
in Paragraph 25 hereof, or by law or in equity. Should the entire security
deposit, or any portion thereof, be appropriated and applied by Landlord for the
payment of overdue rent or other sums due and payable to Landlord by Tenant
hereunder, then Tenant shall, on the written demand of Landlord, forthwith remit
to Landlord a sufficient amount in cash to restore said security deposit to its
original amount, and Tenant's failure to do so within ten (10) days after the
date of such statement of demand shall constitute a material breach of this
Lease. Should Tenant comply with all of the terms, covenants and conditions of
this Lease and promptly pay all of the rental herein provided for as it falls
due, and all other sums payable by Tenant to Landlord hereunder, said security
deposit shall be

                                       9
<PAGE>   13

returned in full to Tenant within thirty (30) days after the end of the term of
this Lease, or upon the earlier termination of this Lease pursuant to the
provisions hereof, except in the event the demised premises are sold as a result
of the exercise of any power of sale under any mortgage or deed of trust, in
which event this Lease shall be automatically amended to delete any reference to
this Paragraph 7, and Tenant shall be entitled to immediate reimbursement of its
security deposit from the party then holding said deposit.

8. USE.

        8.1 General. Tenant shall use the Premises solely for the Permitted Use
specified in Subparagraph 1.17, and shall not use or permit the Premises to be
used for any other use or purpose whatsoever, without first obtaining Landlord's
written consent which may be granted or withheld by Landlord. Tenant shall
observe and comply with the "Rules and Regulations" attached hereto as Exhibit
"F," and all reasonable non-discriminatory modifications thereof and additions
thereto from time to time put into effect and furnished to Tenant by Landlord,
provided said modifications and additions do not materially and adversely affect
Tenant's use of the Premises. Landlord shall not be responsible to Tenant for
the violation or non-performance by any other tenant or occupant of the Project
or the Building of any such Rules and Regulations. Tenant shall also observe and
comply with all requirements of any board of fire underwriters or similar body
relating to the Premises, and all laws, rules and regulations of all
governmental agencies having jurisdiction. Tenant shall not use or allow the
Premises to be used (a) in violation of any recorded covenants, conditions and
restrictions affecting the Site, provided Landlord advises Tenant in writing of
such recorded covenants, conditions and restrictions or of any law or
governmental rule or regulation, or of any certificate of occupancy issued for
the Premises or Building, or (b) for any improper, immoral, unlawful or
reasonably objectionable purpose. Tenant shall not do or permit to be done
anything which will obstruct or interfere with the rights of other tenants or
occupants of the Project or the Building, or injure or annoy them. Tenant shall
not cause, maintain or permit any nuisance in, on or about the Premises, the
Building, the Project or the Site, nor commit or suffer to be committed any
waste in, on or about the Premises.

        8.2 Effect on Insurance. Tenant shall not do or permit to be done
anything which will (a) violate or invalidate any insurance policy maintained by
Landlord or Tenant hereunder, or (b) increase the costs of any insurance policy
maintained by Landlord pursuant to Paragraph 23 or otherwise with respect to the
Building, Site or Project. If Tenant's occupancy or conduct of its business in
or on the Premises results in any increase in premiums for any insurance carried
by Landlord with respect to the Building, Site or Project, Tenant shall pay such
increase as additional rent within fifteen (15) days after being billed therefor
by Landlord. If any insurance coverage carried by Landlord pursuant to Paragraph
23 or otherwise with respect to the Building, Site or Project shall be cancelled
or reduced (or cancellation or reduction thereof shall be threatened) by reason
of the use or occupancy of the Premises by Tenant or by anyone permitted by
Tenant to be upon the Premises, and if Tenant fails to remedy such condition
within) seven (7) business days after notice thereof (or, in the case of a
condition which is not objectively capable of being cured within seven (7)
business days, if Tenant fails to commence such cure within seven (7) business
days or fails to diligently and continuously prosecute such cure to completion
within a reasonable time not to exceed the time period established by the
insurance carrier), Tenant shall be deemed to be in default under this Lease,
and Landlord shall have all remedies provided in this Lease, at law or in
equity, including, without limitation, the right (but not the obligation) to
enter upon the Premises and attempt to remedy such condition at Tenant's cost.

9. PAYMENTS AND NOTICES. All rent and other sums payable by Tenant to Landlord
hereunder shall be paid to Landlord at the first address designated in
Subparagraph 1.2, or to such other persons and/or at such other places as
Landlord may hereafter designate in writing. Any notice required or permitted to
be given hereunder must be in writing and may be given by personal delivery
(including delivery by nationally recognized overnight courier or express
mailing service), facsimile transmission, or by registered or certified mail,
postage prepaid, return receipt requested, addressed to Tenant at the
address(es) designated in Subparagraph 1.4, or to Landlord at the address(es)
designated in Subparagraph 1.2. Either party may, by written notice to the
other, specify a different address for notice purposes.

10. BROKERS. The parties recognize that the broker(s) who negotiated this Lease
are stated in Subparagraph 1.18, and agree that Landlord shall be solely
responsible for the payment of brokerage commissions to said broker(s) in the
amount set forth in listing agreements in place

                                       10
<PAGE>   14

between Landlord and such brokers, and that Tenant shall have no responsibility
therefor unless written provision to the contrary has been made. Each party
represents and warrants to the other that, to its knowledge, no other broker,
agent or finder (a) negotiated or was instrumental in negotiating or
consummating this Lease on its behalf, and (b) is or might be entitled to a
commission or compensation in connection with this Lease. Any broker, agent or
finder of Tenant whom Tenant has failed to disclose herein shall be paid by
Tenant. Tenant shall indemnify, defend (by counsel reasonably approved in
writing by Landlord) and hold Landlord harmless from and against any and all
claims, judgments, suits, causes of action, damages, losses, liabilities and
expenses (including attorneys' fees and court costs) resulting from any breach
by Tenant of the foregoing representation, including, without limitation, any
claims that may be asserted against Landlord by any broker, agent or finder
undisclosed by Tenant herein. Landlord shall indemnify, defend (by counsel
reasonably approved in writing by Tenant) and hold Tenant harmless from and
against any and all claims, judgments, suits, causes of action, damages, losses,
liabilities and expenses (including attorneys' fees and court costs) resulting
from any breach by Landlord of the foregoing representation, including, without
limitation, any claims that may be asserted against Tenant by any broker, agent
or finder undisclosed by Landlord herein. The foregoing indemnities shall
survive the expiration or earlier termination of this Lease.

11. SURRENDER; HOLDING OVER.

        11.1 Surrender of Premises. Upon the expiration or sooner termination of
this Lease, Tenant shall surrender all keys for the Premises to Landlord, and
exclusive possession of the Premises to Landlord broom clean and in good
condition and repair, reasonable wear and tear excepted (and casualty damage
excepted), with all of Tenant's personal property (and those items, if any, of
Leasehold Improvements and Tenant Changes identified by Landlord pursuant to
Subparagraph 14.2 below) removed therefrom and all damage caused by such removal
repaired, as required pursuant to Subparagraphs 14.2 and 14.3 below. If Tenant
fails to surrender the Premises on the expiration or earlier termination of this
Lease despite demand to do so by Landlord (including upon the expiration of any
subsequent month-to-month tenancy pursuant to Subparagraph 11.2 below), with
such removal and repair obligations completed, then, in addition to the
Landlord's rights and remedies under Subparagraph 14.4 and the other provisions
of this Lease, Tenant shall indemnify, defend with counsel reasonably acceptable
to Landlord and hold Landlord harmless from all loss or liability including,
without limitation, any claims made by any succeeding tenant based thereon. The
foregoing indemnity shall survive the expiration or earlier termination of this
Lease.

        11.2 Hold Over. Any holding over after the expiration of the term of
this Lease, with the consent of Landlord, shall be construed to be a tenancy
from month to month, cancelable upon thirty (30) days written notice, and upon
the same terms and conditions as exist during the last year of the term hereof
except the Annual Basic Rent shall be increased to one hundred fifty percent
(150%) of the Annual Basic Rent during the last year of the term hereof or to
fair market value, whichever is greater. Any holding over after the expiration
of the term of this Lease, without the consent of Landlord, shall result in
Tenant being a tenant at sufferance, in which event Landlord shall have the
right to immediately terminate this Lease and Tenant shall indemnify, defend and
hold Landlord harmless from any and all costs, liabilities, obligations, damages
and claims resulting therefrom.

        11.3 No Effect on Landlord's Rights. The foregoing provisions of this
Paragraph 11 are in addition to, and do not affect, Landlord's right of re-entry
or any other rights of Landlord hereunder or otherwise provided by law or
equity.

12. TAXES ON TENANT'S PROPERTY. Tenant shall be liable for, and shall pay before
delinquency, all taxes and assessments (real and personal) levied against (a)
any personal property or trade fixtures placed by Tenant in or about the
Premises (including any increase in the assessed value of the Premises based
upon the value of any such personal property or trade fixtures); and (b) any
Leasehold Improvements or alterations in the Premises (whether installed and/or
paid for by Landlord or Tenant) to the extent such items are assessed at a
valuation higher than the valuation at which tenant improvements conforming to
the Building standard tenant improvements set forth in Schedule "1" to Exhibit
"D" are assessed. If any such taxes or assessments are levied against Landlord
or Landlord's property, Landlord may, after written notice to Tenant (and under
proper protest if requested by Tenant) pay such taxes and assessments, and
Tenant shall reimburse Landlord therefor within ten (10) business days after
demand by Landlord; provided, however, Tenant, at its sole cost and expense,
shall have the

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<PAGE>   15

right, with Landlord's cooperation, to bring suit in any court of competent
jurisdiction to recover the amount of any such taxes and assessments so paid
under protest.

13. CONDITION OF PREMISES; REPAIRS.

        13.1 Condition of Premises. Tenant acknowledges that, except as
otherwise expressly set forth in this Lease, neither Landlord nor any agent of
Landlord has made any representation or warranty with respect to the Premises,
the Building, the Site or the Project or their condition, or with respect to the
suitability thereof for the conduct of Tenant's business. The taking of
possession of the Premises by Tenant shall conclusively establish that the
Project, the Site, the Premises, the Leasehold Improvements therein, the
Building and the Common Areas were at such time complete and in good, sanitary
and satisfactory condition and repair with all work required to be performed by
Landlord, if any, pursuant to Exhibit "D" completed and without any obligation
on Landlord's part to make any alterations, upgrades or improvements thereto,
except as provided in Exhibit "D" and the repair of any latent defects in the
Building or Premises (excluding any portion of the Premises constructed by
Tenant) disclosed by Tenant and specified in written notice to Landlord within
one (1) year after the Commencement Date. Landlord shall cause all latent
defects so specified by notice from Tenant to be completed and/or repaired as
soon as reasonably possible after Landlord's receipt thereof. As of the
Commencement Date, the roof, HVAC system, windows and seals, structural
components and all electrical and plumbing systems and equipment serving the
Premises shall be in good working condition and shall comply with applicable
laws, ordinances and regulations, including, without limitation, those
pertaining to disabled access and hazardous materials. Landlord shall repair and
maintain such components and systems during the Term of this Lease to the extent
required of Landlord herein.

        13.2 Tenant's Repair Obligations. Except for Landlord's obligations
specifically set forth in Subparagraphs 13.1, 13.3, 20.1 and 21.2 hereof, Tenant
shall at all times and at Tenant's sole cost and expense, keep, maintain, repair
and preserve the Premises and all Leasehold Improvements, Tenant Changes, and
any alterations, additions and property therein in first-class condition and
repair, reasonable wear and tear excepted. Such maintenance and repairs shall be
performed with due diligence, lien-free and in a first-class workmanlike manner,
by such contractor(s) selected by Tenant and approved by Landlord, which
approval shall not be unreasonably withheld, delayed, or conditioned. Except as
otherwise expressly provided in this Lease, Landlord shall have no obligation to
alter, remodel, improve, repair, renovate, redecorate or paint all or any part
of the Premises.

        13.3 Landlord's Repair Obligations. Notwithstanding the provisions of
Subparagraph 13.2 above to the contrary, Landlord shall, as part of the
Operating Expenses, repair and maintain in a good condition (a) the Building's
shell and other structural portions of the Building (including the roof and
foundations), (b) the basic plumbing, heating, ventilating, air conditioning,
sprinkler and electrical systems within the Building's core and (c) the Common
Areas; provided, however, to the extent such maintenance or repairs are required
as a result of any act, neglect, fault or omission of Tenant or any of Tenant's
agents, employees, contractors, licensees or invitees, Tenant shall pay to
Landlord, as additional rent, the costs of such maintenance and repairs.

        13.4 Tenant's Waiver; Self-Help. Tenant waives the right to make repairs
at Landlord's expense under any law, statute or ordinance now or hereafter in
effect (including the provisions of California Civil Code Section 1942 and any
successive sections or statutes of a similar nature); provided, however, subject
to the termination rights set forth in Paragraphs 20 and 21, if Landlord fails
to perform any maintenance or repair work required pursuant to Subparagraph 13.3
within twenty (20) days after Landlord receives Tenant's written notice of the
need for such repairs (or such period of time in excess of twenty (20) days as
is reasonably necessary based upon the nature of such work), and if such failure
to repair unreasonably interferes with Tenant's use of or access to the
Premises, then Tenant shall be permitted to make such repairs, using the
Building's contractors or such other contractors reasonably approved by
Landlord, upon delivery of an additional two (2) business days' prior written
notice to Landlord indicating that Tenant will be undertaking such repairs, and
Tenant shall be entitled to recover from Landlord the actual reasonable costs of
such repairs made by Tenant.

14. ALTERATIONS.

        14.1 Tenant Changes; Conditions. After installation of the initial
Leasehold Improvements for the Premises pursuant to Exhibit "D," Tenant may, at
its sole cost and

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<PAGE>   16

expense, make alterations, additions, improvements and decorations to the
Premises (collectively, "Tenant Changes") subject to and upon the following
terms and conditions:

                (a) Notwithstanding any provision in this Paragraph 14 to the
contrary, Tenant is absolutely prohibited from making any alterations,
additions, improvements or decorations which: (i) affect any area outside the
Premises; (ii) affect the Building's structure, or detrimentally affect any
equipment or systems, or the proper functioning thereof, or Landlord's access
thereto; (iii) affect the outside appearance, character or use of the Project,
the Building or the Common Areas; (iv) weaken or impair the structural strength
of the Building; (v) in the reasonable opinion of Landlord, lessen the value of
the Project or Building; or (vi) will violate or require a change in any
occupancy certificate applicable to the Premises.

                (b) Before proceeding with any Tenant Change which is not
otherwise prohibited in Subparagraph 14.1(a) above, Tenant must first obtain
Landlord's written approval thereof (including approval of all plans,
specifications and working drawings for such Tenant Change), which approval
shall not be unreasonably withheld, conditioned or delayed. However, Landlord's
prior approval shall not be required for any Tenant Change (i) which, when
combined with all of Tenant's other Tenant Changes over a twelve-month period do
not, in the aggregate, cost more than Twenty Thousand Dollars ($20,000.00); (ii)
provided that Tenant delivers to Landlord final plans, specifications and
working drawings for such Tenant Change at least ten (10) days prior to
commencement of the work thereof; and (iii) further provided that Tenant and
such Tenant Change otherwise satisfy all other conditions set forth in this
Subparagraph 14.1.

                (c) After Landlord has approved the Tenant Changes and the
plans, specifications and working drawings therefor, Tenant shall: (i) enter
into an agreement for the performance of such Tenant Changes with such
contractors and subcontractors selected by Tenant and approved by Landlord,
which approval shall not be unreasonably withheld, conditioned or delayed; (ii)
before proceeding with any Tenant Change, provide Landlord with ten (10) days'
prior written notice thereof; and (iii) pay to Landlord, within fifteen (15)
days after written demand, the costs of any increased insurance premiums
incurred by Landlord to include such Tenant Changes in the fire and extended
coverage insurance obtained by Landlord pursuant to Paragraph 23 below. However,
Landlord shall be required to include the Tenant Changes under such insurance
only to the extent such insurance is actually obtained by Landlord and such
Tenant Changes are insurable under such insurance; if such Tenant Changes are
not or cannot be included in Landlord's insurance, Tenant shall insure the
Tenant Changes under its casualty insurance pursuant to Subparagraph 22.1(a)
below. In addition, before proceeding with any Tenant Change, Tenant's
contractors shall obtain, on behalf of Tenant and at Tenant's sole cost and
expense, all necessary governmental permits and approvals for the commencement
and completion of such Tenant Change.

                (d) Tenant shall pay to Landlord, as additional rent, the
reasonable costs of Landlord's engineers and other consultants (but not
Landlord's on-site management personnel) for review of all plans, specifications
and working drawings for the Tenant Changes, within fifteen (15) business days
after Tenant's receipt of invoices either from Landlord or such consultants.

                (e) All Tenant Changes shall be performed: (i) in accordance
with the approved plans, specifications and working drawings; (ii) lien-free and
in a first-class and workmanlike manner; (iii) in compliance with all laws,
rules, and regulations of all governmental agencies and authorities; (iv) in
such a manner so as not to interfere with the occupancy of any other tenant in
the Project or Building, nor impose any additional expense upon nor delay
Landlord in the maintenance and operation of the Project or Building; and (v) at
such times, in such manner and subject to such rules and regulations as Landlord
may from time to time reasonably designate.

                (f) Throughout the performance of the Tenant Changes, Tenant
shall obtain, or cause its contractors to obtain, workers compensation insurance
and general liability insurance in compliance with the provisions of Paragraph
22 of this Lease.

        14.2 Removal of Tenant Changes and Leasehold Improvements. All Tenant
Changes and the initial Leasehold Improvements in the Premises (whether
installed or paid for by Landlord or Tenant), shall become the property of
Landlord and shall remain upon and be surrendered with the Premises at the end
of the Term of this Lease. Landlord's consent to the initial Leasehold
Improvements shall relieve Tenant of any obligation to remove such Leasehold

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<PAGE>   17

Improvements at the expiration or sooner termination of this Lease, unless, at
the time Landlord consents to such Leasehold Improvements, Landlord indicates
that it will require removal of such Leasehold Improvements on the expiration or
sooner termination of this Lease. If Tenant so desires, Tenant may, prior to
making any Tenant Changes (regardless of whether Landlord's consent to such
Tenant Changes is required), request Landlord to notify Tenant, in writing,
within ten (10) days following receipt of Tenant's request, as to whether
Landlord will require the removal of such Tenant Changes and restoration of the
Premises to the condition which existed prior to the performance of any such
Tenant Changes. If Landlord fails to respond to Tenant's request, in writing,
within such ten (10) day period, Landlord shall be deemed to have elected to
require that such Tenant Changes not be removed and the Premises restored as of
the expiration or sooner termination of the Term of this Lease. If Landlord
requires Tenant to remove any such items as described above, Tenant shall, at
its sole cost, remove the identified items on or before the expiration or sooner
termination of this Lease and repair any damage to the Premises caused by such
removal (or, at Landlord's option, shall pay to Landlord all of Landlord's costs
of such removal and repair).

        14.3 Removal of Personal Property. All articles of personal property
owned by Tenant or installed by Tenant at its expense in the Premises (including
business and trade fixtures, furniture and movable partitions) shall be, and
remain, the property of Tenant, and shall be removed by Tenant from the
Premises, at Tenant's sole cost and expense, on or before the expiration or
sooner termination of this Lease. Tenant shall repair any damage caused by such
removal.

        14.4 Tenant's Failure to Remove. If Tenant fails to remove by the
expiration or sooner termination of this Lease substantially all of its personal
property, or any items of Leasehold Improvements or Tenant Changes identified by
Landlord for removal pursuant to Subparagraph 14.2 above, Landlord may, after
Tenant's continued failure after ten (10) days written notice to Tenant, and at
its option, treat such failure as a hold over pursuant to Subparagraph 11.2
above, and/or may (without liability to Tenant for loss thereof), at Tenant's
sole cost and in addition to Landlord's other rights and remedies under this
Lease, at law or in equity: (a) remove and store such items; and/or (b) upon an
additional ten (10) days' prior notice to Tenant, sell all or any such items at
private or public sale for such price as Landlord may obtain. Landlord shall
apply the proceeds of any such sale to any amounts due to Landlord under this
Lease from Tenant (including Landlord's attorneys' fees and other costs incurred
in the removal, storage and/or sale of such items), with any remainder to be
paid to Tenant.

15. LIENS. Tenant shall not permit any mechanic's, materialmen's or other liens
to be filed against all or any part of the Project, the Site, the Building or
the Premises, nor against Tenant's leasehold interest in the Premises, by reason
of or in connection with any repairs, alterations, improvements or other work
contracted for or undertaken by Tenant or any other act or omission of Tenant or
Tenant's agents, employees, contractors, licensees or invitees. Tenant shall, at
Landlord's request, provide Landlord with enforceable, conditional and final
lien releases (and other evidence reasonably requested by Landlord to
demonstrate protection from liens) from all persons furnishing labor and/or
materials with respect to the Premises. Landlord shall have the right at all
reasonable times to post on the Premises and record any notices of
non-responsibility which it deems necessary for protection from such liens. If
any such liens are filed, Tenant shall, at its sole cost, immediately cause such
lien to be released of record or bonded so that it no longer affects title to
the Project, the Site, the Building or the Premises. If Tenant fails to cause
such lien to be so released or bonded within ten (10) days after filing thereof,
such failure shall be deemed a material breach by Tenant under this Lease, and
Landlord may, without waiving its rights and remedies based on such breach, and
without releasing Tenant from any of its obligations, cause such lien to be
released by any means it shall deem proper, including payment in satisfaction of
the claim giving rise to such lien. Tenant shall pay to Landlord within fifteen
(15) days after receipt of invoice from Landlord, any sum paid by Landlord to
remove such liens, together with interest at the Interest Rate from the date of
such payment by Landlord.

16. ASSIGNMENT AND SUBLETTING.

        16.1 General. Assignment or encumbrance of all or any part of this
Lease, and any sublease of all or any part of the Premises, shall only be
permitted, in conformance with the provisions of this Paragraph 16.

        16.2 Restriction on Transfer. Subject to the provisions of Subparagraphs
16.3, 16.4, 16.5 and 16.6, Tenant shall not, without the prior written consent
of Landlord, which consent

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<PAGE>   18

shall not be unreasonably withheld, conditioned or delayed, assign or encumber
this Lease or any interest herein or sublet the Premises or any part thereof, or
permit the use or occupancy of the Premises by any party other than Tenant (any
such assignment, encumbrance, sublease or the like shall sometimes be referred
to as a "Transfer"). Any Transfer without Landlord's consent (except for a
Transfer pursuant to Subparagraph 16.6 below) shall constitute a default by
Tenant under this Lease, and in addition to all of Landlord's other remedies at
law, in equity or under this Lease, such Transfer shall be voidable at
Landlord's election. For purposes of this Paragraph 16, if Tenant is a
corporation, partnership or other entity, any transfer, assignment, encumbrance
or hypothecation of fifty percent (50%) or more (individually or in the
aggregate) of any stock or other ownership interest in such entity, and/or any
transfer, assignment, hypothecation or encumbrance of any controlling ownership
or voting interest in such entity, shall be deemed an assignment of this Lease
and shall be subject to all of the restrictions and provisions contained in this
Paragraph 16. Notwithstanding the foregoing, the immediately preceding sentence
shall not apply to any transfers of stock of Tenant if Tenant is a publicly-held
corporation and such stock is transferred publicly over a recognized security
exchange or over-the-counter market. Notwithstanding anything to the contrary
set forth herein, Tenant may sublet up to four (4) separate offices to sole
practitioners without Landlord's prior written consent.

        16.3 Landlord's Options. If at any time or from time to time during the
Term Tenant desires to effect a Transfer, Tenant shall deliver to Landlord
written notice ("Transfer Notice") setting forth the terms and provisions of the
proposed Transfer and the identity of the proposed assignee, sublessee or other
transferee (sometimes referred to hereinafter as a "Transferee"). Tenant shall
also deliver to Landlord with the Transfer Notice, a current financial statement
and financial statements for the preceding two (2) years of the Transferee which
have been certified or audited by an independent accounting firm, and such other
information concerning the business background and financial condition of the
proposed Transferee as Landlord may reasonably request. Landlord shall have the
option, exercisable by written notice delivered to Tenant within ten (10) days
after Landlord's receipt of the Transfer Notice, such financial statements and
other information, either to approve or disapprove such Transfer, which approval
shall not be unreasonably withheld, conditioned or delayed.

        16.4 Additional Conditions; Excess Rent. If Landlord approves of the
proposed Transfer pursuant to Subparagraph 16.3 above, Tenant may enter into the
proposed Transfer with such proposed Transferee subject to the following further
conditions:

                (a) The Transfer shall be on the same terms set forth in the
Transfer Notice delivered to Landlord (if the terms have changed, Tenant must
submit a revised Transfer Notice to Landlord and Landlord shall have another ten
(10) days after receipt thereof to make the election in Subparagraph 16.3);

                (b) No Transfer shall be valid and no Transferee shall take
possession of the Premises until an executed counterpart of the assignment,
sublease or other instrument affecting the Transfer has been delivered to
Landlord pursuant to which the Transferee shall expressly assume all of Tenant's
obligations under this Lease (or with respect to a sublease of a portion of the
Premises or for a portion of the Term, all of Tenant's obligations applicable to
such portion);

                (c) No Transferee shall have a further right to assign, encumber
or sublet, except on the terms herein contained; and

                (d) In the event of an approved assignment or sublease, Tenant
and Landlord shall each be entitled to retain fifty percent (50%) of the Profits
actually received by Tenant. The following shall constitute the definition of
"Profits:" The gross revenue received from the assignee during the assignment or
sublessee during the sublease term with respect to the space covered by the
assignment or sublease ("Transferred Space") less (i) the gross revenue owing
Landlord by Tenant pursuant to this Lease for such Transferred Space (if such
Transferred Space is less than the Premises, the revenue owing Landlord for the
Premises shall be equitably apportioned to determine the amount of such revenue
applicable to the Transferred Space); (ii) any improvement allowance or tenant
inducement for the benefit of such assignee or sublessee (provided such party is
not affiliated with Tenant); (iii) broker's commissions paid with respect to
such assignment or sublease; and (iv) reasonable attorneys' fees incurred in
effectuating such assignment or sublease; provided, however, such costs in (i)
through (iv) above shall be amortized over the term of such assignment or
sublease.

        16.5 Reasonable Disapproval. Landlord and Tenant hereby acknowledge that
Landlord's disapproval of any proposed Transfer pursuant to Subparagraph 16.3
shall be deemed

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<PAGE>   19

reasonably withheld if based upon any reasonable factor, including, without
limitation, any or all of the following factors: (a) the proposed Transfer would
result in more than two (2) subleases of portions of the Premises being in
effect at any one time during the Term; (b) the proposed Transferee is an
existing tenant of the Project or is presently negotiating with Landlord (unless
Landlord cannot accommodate the space requirement of the proposed Transferee
within a reasonable time frame) for space in the Project; (c) the proposed
Transferee is a governmental entity; (d) the use of the Premises by the
Transferee (i) is not permitted by the use provisions in Paragraph 8 hereof, or
(ii) violates any exclusive use granted by Landlord to another tenant in the
Project; (e) the Transfer would likely result in a significant increase in the
use of the parking areas or Common Areas by the Transferee's employees or
visitors, and/or significantly increase the demand upon utilities and services
to be provided by Landlord to the Premises; (f) the Transferee does not have the
reasonable financial capability to fulfill the obligations imposed by the
Transfer; (g) the Transferee is not in Landlord's reasonable opinion of
reputable or good character or consistent with Landlord's reasonably desired
tenant mix; or (h) the Transferee is a real estate developer or is acting
directly or indirectly on behalf of a real estate developer.

        16.6 Permitted Transfers. Notwithstanding the provisions of this
Paragraph 16 to the contrary, Tenant may assign this Lease or sublet the
Premises or any portion thereof, without paying any fees to or splitting any
amounts received with Landlord, without Landlord's consent to any corporation or
other entity which controls, is controlled by or is under common control with
Tenant, or to any corporation or other entity resulting from a merger or
consolidation with Tenant, or to any person or entity which acquires all of the
assets of Tenant's business as a going concern (collectively, "Permitted
Transfers"), provided that: (a) if an assignment, the assignee assumes, in full,
the obligations of Tenant under this Lease (or if a sublease, the sublessee of a
portion of the Premises or Term assumes, in full, the obligations of Tenant with
respect to such portion); (b) Tenant remains fully liable under this Lease; (c)
the use of the Premises under Paragraph 8 of this Lease remains unchanged; and
(d) such transaction is not entered into as a subterfuge to avoid the
restrictions and provisions of this Paragraph 16.

        16.7 No Release. No Transfer shall release Tenant of Tenant's
obligations under this Lease or alter the primary liability of Tenant to pay the
rent and to perform all other obligations to be performed by Tenant hereunder.
Landlord may require that any Transferee remit directly to Landlord on a monthly
basis, all monies due Tenant by said Transferee.

                However, the acceptance of rent by Landlord from any other
person shall not be deemed to be a waiver by Landlord of any provision hereof.
Consent by Landlord to one Transfer shall not be deemed consent to any
subsequent Transfer. In the event of default by any Transferee of Tenant or any
successor of Tenant in the performance of any of the terms hereof, Landlord may
proceed directly against Tenant without the necessity of exhausting remedies
against such Transferee or successor.

        16.8 Administrative and Attorneys' Fees. If Tenant requests the consent
of Landlord to any Transfer, then Tenant shall, upon demand, pay Landlord a
non-refundable administrative fee of Five Hundred Dollars ($500.00). Acceptance
of the administrative fee shall in no event obligate Landlord to consent to any
proposed Transfer.

17. ENTRY BY LANDLORD. Landlord and its employees and agents shall at all times
have the right to enter the Premises to inspect the same, to supply janitorial
service and any other service required to be provided by Landlord to Tenant
under this Lease, to exhibit the Premises to prospective lenders or purchasers
(or during the last nine (9) months of the Term, to prospective tenants), to
post notices of non-responsibility, and/or to alter, improve or repair the
Premises or any other portion of the Building or Project, all without being
deemed guilty of or liable for any breach of Landlord's covenant of quiet
enjoyment or any eviction of Tenant, and without abatement of rent, provided
such entry by Landlord or its employees and agents is reasonable in manner and
duration. Landlord shall provide Tenant with reasonable notice prior to any
entry into the Premises for purposes of inspection, exhibition, posting notices
or making alterations, but no prior notice shall be required for any entry for
providing janitorial services, relamping, recurring maintenance work or
responding to emergencies. In exercising such entry rights, Landlord shall
endeavor to minimize, as reasonably practicable, the interference with Tenant's
business, and shall provide Tenant with reasonable advance written notice of
such entry (except in emergency situations). For each of the foregoing purposes,
Landlord shall at all times have and retain a key with which to unlock all of
the doors in, upon and about the Premises, excluding Tenant's vaults and safes,
and Landlord shall have the means which Landlord may deem proper

                                       16
<PAGE>   20

to open said doors in an emergency in order to obtain entry to the Premises. Any
entry to the Premises obtained by Landlord by any of said means or otherwise
shall not under any circumstances be construed or deemed to be a forcible or
unlawful entry into, or a detainer of, the Premises, or an eviction of Tenant
from the Premises or any portion thereof, or grounds for any abatement or
reduction of rent, provided that Landlord reasonably entered the Premises for a
permitted purpose. Any repairs to the Premises necessitated on account of any
such entry by Landlord shall be Landlord's responsibility, unless such repairs
result from Tenant's failure to provide Landlord with properly labeled keys for
the Premises. Nothing in this Paragraph 17 shall be construed as obligating
Landlord to perform any repairs, alterations or decorations, except as otherwise
expressly required in this Lease to be performed by Landlord.

18. UTILITIES AND SERVICES.

        18.1 Standard Utilities and Services. Subject to the terms and
conditions of this Lease, and the obligations of Tenant as set forth
hereinbelow, Landlord shall furnish or cause to be furnished to the Premises the
following utilities and services in a manner consistent with other comparable
Class A quality office buildings located in South Orange County, the costs of
which shall be included in Operating Expenses, unless otherwise specified below
(Landlord reserves the right to adopt non-discriminatory modifications and
additions to the following provisions from time to time so long as such
modifications do not materially decrease the level of service provided to
Tenant):

                (a) Landlord shall make available for Tenant's non-exclusive
use, the non-attended passenger elevator facilities of the Building, seven days
per week, 24 hours per day. Tenant shall have access to the Premises seven (7)
days per week, 24 hours per day.

                (b) Landlord shall furnish during "Business Hours" heating,
ventilation and air conditioning ("HVAC") for the Premises as required in
Landlord's judgment for the comfortable and normal occupancy of the Premises.
For purposes of this Subparagraph 18.1, the "Business Hours" shall mean 7:00
a.m. to 6:00 p.m. on Monday through Friday and 8:00 a.m. to 1PM on Saturday
(except holidays). The cost of maintenance and service calls to adjust and
regulate the HVAC system shall be charged to Tenant if the need for maintenance
work results from either Tenant's adjustment of room thermostats or Tenant's
failure to comply with its obligations under this Paragraph 18. Such work shall
be charged at hourly rates equal to then-current journeyman's wages for HVAC
mechanics. If Tenant desires HVAC at any time other than during Business Hours,
Landlord shall provide such "after-hours" usage after twenty-four (24) hours
advance request by Tenant, and Tenant shall pay to Landlord, as additional rent
(and not as part of the Operating Expenses) the actual cost on an average hourly
basis (including Landlord's reasonable administrative costs of ten percent (10%)
of such actual costs, which shall be excluded from Operating Expenses), as
reasonably and fairly determined by Landlord from time to time, of such
after-hours usage. Landlord agrees that it shall use reasonable efforts to
accommodate Tenant's requests for after-hours HVAC service on less than
twenty-four (24) hours prior notice whenever possible.

                (c) Landlord shall furnish to the Premises 24 hours per day,
reasonable quantities of electric current for fluorescent and incandescent
lighting, and task ambient lighting and for normal office equipment in
quantities and intensity of use which is customary and reasonable for normal
office tenants (collectively "Customary Uses"). Landlord shall have the right to
require that any raised-floor computer facility portions of the Premises, any
uninterrupted power supply circuits and any other circuits serving computers,
equipment or facilities which are not Customary Uses (collectively, "Separately
Metered Portions") shall be separately metered, and that the actual costs for
all such separately metered electrical consumption be paid by Tenant either
directly to the utility company, or to Landlord, as Landlord elects, which
charges shall be excluded from Operating Expenses. If required, Landlord shall
pay for the actual cost of said meters and the installation of said meters. In
no event shall Tenant's use of electric current ever exceed the capacity of the
feeders to the Building or the risers or wiring installation of the Building.
Landlord shall also furnish hot and cold water to the Premises 24 hours per day
for drinking and lavatory purposes, in such quantities as required in Landlord's
reasonable judgment for the comfortable and normal use of the Premises. If
Tenant requires or consumes water in excess of what is considered reasonable or
normal by Landlord, Landlord may require Tenant to pay to Landlord, as
additional rent, the cost as fairly determined by Landlord incurred for such
excess usage.

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<PAGE>   21

                (d) Landlord will pay for electricity to reasonable industry
standard for similar business usage, excluding the HVAC.

                (e) Landlord shall furnish janitorial services to the Premises
five (5) days per week pursuant to janitorial and cleaning specifications as may
be adopted by Landlord from time to time, which standards shall be consistent
with the standards typical for comparable Class A quality office buildings
located in the South Orange County area. No person(s) other than those persons
approved by Landlord shall be permitted to enter the Premises for such purposes.
Janitor service shall include ordinary dusting and cleaning by the janitor
assigned to do such work and shall not include cleaning of carpets or rugs,
except normal vacuuming, or moving of furniture, interior window cleaning, and
other special services. Such additional services may be rendered by Landlord
pursuant to written agreement with Tenant as to the extent of such services and
the payment of the cost thereof. Janitor service will not be furnished to rooms
which are locked unless a key is furnished to Landlord for use by the janitorial
contractor. Window cleaning shall be done only by Landlord, at such time and
frequency as reasonably determined by Landlord. Tenant shall pay to Landlord the
cost of removal of any of Tenant's refuse and rubbish to the extent that the
same exceeds the refuse and rubbish usually attendant upon the use of the
Premises as offices.

                (f) Landlord may provide security service or protection in the
Building, in a manner consistent with other comparable Class A quality office
buildings located in the South Orange County office market from the Commencement
Date through the Term.

                (g) At Landlord's option, and subject to the provisions of
Subparagraph 18.1(c), above, Landlord may install water, electricity and/or HVAC
meters in the Premises to measure Tenant's consumption of such utilities,
including any after-hours and extraordinary usage described above.

        18.2 Tenant's Obligations. Tenant shall cooperate fully at all times
with Landlord, and abide by all reasonable and non-discriminatory regulations
and requirements which Landlord may prescribe for the proper functioning and
protection of the Building's services and systems. Tenant shall not use any
apparatus or device in, upon or about the Premises which may in any way increase
the amount of services or utilities usually furnished or supplied to the
Premises or other premises in the Building. In addition, Tenant shall not
connect any conduit, pipe, apparatus or other device to the Building's water,
waste or other supply lines or systems for any purpose without first obtaining
Landlord's written consent. Neither Tenant nor its employees, agents,
contractors, licensees or invitees shall at any time enter, adjust, tamper with,
touch or otherwise in any manner affect the mechanical installations or
facilities of the Building.

        18.3 Failure to Provide Utilities. Landlord's failure to furnish any of
the utilities and services described in Subparagraph 18.1 above when such
failure is caused by all or any of the following shall not result in any
liability of Landlord, unless caused by Landlord's gross negligence or willful
misconduct, or as otherwise set forth in this Lease: (a) accident, breakage or
repairs; (b) strikes, lockouts or other labor disturbances or labor disputes of
any such character; (c) governmental regulation, moratorium or other
governmental action; (d) inability, despite the exercise of reasonable
diligence, to obtain electricity, water or fuel; or (e) any other cause beyond
Landlord's reasonable control. In addition, in the event of the failure of any
said utilities or services, Tenant shall not be entitled to any abatement or
reduction of rent (except as expressly provided in Subparagraphs 20.3 and 21.2
if such failure is a result of a damage or taking described therein), except as
otherwise set forth in this Lease, no eviction of Tenant shall result, and
Tenant shall not be relieved from the performance of any covenant or agreement
in this Lease. In the event of any stoppage or interruption of services or
utilities, Landlord shall diligently attempt to resume such services or
utilities as promptly as practicable. Notwithstanding the foregoing, if Tenant
is prevented from using, and does not use, the Premises or any portion thereof
due to damage, destruction, failure of Landlord to provide essential services,
or any other failure to provide access to the Premises or any portion thereof:
(a) for a period of two (2) consecutive business days or ten (10) days in any
consecutive twelve (12) month period, then Tenant's rent shall be abated and/or
reduced beginning on the date that Tenant is prevented from using, and does not
use the Premises in a proportionate amount for rent to be charged until the
first day after such interruption ends; and (b) for a period of ninety (90)
consecutive days then Tenant shall have the right to terminate this Lease upon
written notice to Landlord if Landlord has failed to cure same within ninety
(90) days.

                                       18
<PAGE>   22

19. INDEMNIFICATION AND EXCULPATION.

        19.1 Tenant's Indemnification of Landlord. Tenant shall be liable for,
and shall indemnify, defend and hold Landlord and Landlord's partners, officers,
directors, employees, agents, successors and assigns (collectively, "Landlord
Indemnified Parties") harmless from and against, any and all claims, damages,
judgments, suits, causes of action, losses, liabilities and expenses, including
attorneys' fees and court costs (collectively, "Indemnified Claims"), arising or
resulting from (a) any negligent act or negligent omission of Tenant or any of
Tenant's agents, employees, contractors, subtenants, assignees, licensees or
invitees (collectively, "Tenant Parties"); (b) the use of the Premises and
Common Areas and conduct of Tenant's business by Tenant or any Tenant Parties,
or any other activity, work or thing done, permitted or suffered by Tenant or
any Tenant Parties, in or about the Premises, the Building or elsewhere on the
Site; and/or (c) any default by Tenant of any obligations on Tenant's part to be
performed under the terms of this Lease. In case any action or proceeding is
brought against Landlord or any Landlord Indemnified Parties by reason of any
such Indemnified Claims, Tenant, upon notice from Landlord, shall defend the
same at Tenant's expense by counsel approved in writing by Landlord, which
approval shall not be unreasonably withheld. The foregoing provisions of this
section shall not however be deemed to exculpate Landlord from damages, costs or
liabilities resulting from the sole negligence or willful misconduct of
Landlord, its employees, agents or contractors (collectively, "Landlord's
Parties").

        19.2 Landlord's Indemnification. Subject to the limitation on Landlord's
liability set forth in Paragraph 34 below, Landlord shall be liable for, and
shall indemnify, defend and hold Tenant and Tenant's partners, officers,
directors, employees, agents, successors and assigns (collectively, "Tenant
Indemnified Parties") harmless from and against, any injury to persons or damage
to property located on the Premises or Site to the extent such damage or injury
arises or results from (a) the negligence or willful misconduct of Landlord, its
agents or employees and/or (b) the default by Landlord of any obligations on
Landlord's part to be performed under the terms of this Lease. In case any
action or proceeding is brought against Tenant or any Tenant Indemnified Parties
by reason of any such injury or damage indemnified by Landlord as set forth
hereinabove, Landlord, upon notice from Tenant, shall defend the same at
Landlord's expense by counsel approved in writing by Tenant, which approval
shall not be unreasonably withheld.

        19.3 Survival; No Release of Insurers. Tenant's and Landlord's
indemnification obligations under Subparagraphs 19.1 and 19.2, respectively,
shall survive the expiration or earlier termination of this Lease. Tenant's
covenants, agreements and indemnification in Subparagraph 19.1 above, and
Landlord's covenants, agreements and indemnification in Subparagraph 19.2 above,
are not intended to and shall not relieve any insurance carrier of its
obligations under policies required to be carried by Landlord or Tenant,
respectively, pursuant to the provisions of this Lease.

20. DAMAGE OR DESTRUCTION.

        20.1 Landlord's Rights and Obligations. In the event the Premises or any
part of the Building is damaged by fire or other casualty to an extent not
exceeding twenty-five percent (25%) of the full replacement cost thereof, and
Landlord's contractor reasonably estimates in a writing delivered to the parties
that the damage thereto is such that the Building and/or Premises may be
repaired, reconstructed or restored to substantially its condition immediately
prior to such damage within one hundred twenty (120) days from the date of such
casualty, and Landlord will or would receive insurance proceeds sufficient to
cover the costs of such repairs, reconstruction and restoration had Landlord
carried the insurance required to be carried by Landlord pursuant to this Lease
(including proceeds from Tenant and/or Tenant's insurance which Tenant is
required to deliver to Landlord pursuant to Subparagraph 20.2 below), or should
Landlord be a self-insurer for such casualty and such casualty would have been
covered by the insurance required under this Lease had Landlord not elected to
self-insure for such risk, then Landlord shall commence and proceed diligently
with the work of repair, reconstruction and restoration and this Lease shall
continue in full force and effect. If, however, the Premises or any other
part(s) of such Building is damaged to an extent exceeding twenty-five percent
(25%) of the full replacement cost thereof, or Landlord's contractor reasonably
estimates that such work of repair, reconstruction and restoration will require
longer than one hundred fifty (150) days to complete, or Landlord will not
receive insurance proceeds even though Landlord carried the insurance required
to be carried by Landlord pursuant to this Lease (and/or proceeds from Tenant,
as applicable) sufficient to cover the costs of such repairs, reconstruction and
restoration, then Landlord may elect to either: (a) repair, reconstruct and
restore the portion of the Building and

                                       19
<PAGE>   23

Premises damaged by such casualty (including the Leasehold Improvements and any
Tenant Changes insured by Landlord pursuant to Subparagraph 14.1(c)), in which
case this Lease shall continue in full force and effect; or (b) terminate this
Lease effective as of the date which is thirty (30) days after Tenant's receipt
of Landlord's election to so terminate provided all leases for all similarly
situated tenants in similar situations are also terminated.

                Under any of the conditions of this Subparagraph 20.1, Landlord
shall give written notice to Tenant of its intention to repair or terminate
within thirty (30) days after the occurrence of such casualty. Landlord shall,
within ten (10) business days after the execution of this Lease by Landlord and
Tenant, supply Tenant with a list of the names of individuals to contact and
their phone numbers in the event of damage, destruction or disaster, as well as
all plans and specifications for the Building to enable Tenant to perform
Inspections (as defined below) and restoration, as applicable. If the Premises
or any part of the Building is damaged by fire or other casualty, Landlord shall
begin the process of inspection (" Inspection") within two (2) business days of
the occurrence of the casualty. If Landlord fails to begin Inspection within
said two (2) business days, then upon 24 hours written notice to Landlord,
Tenant shall have the right to begin Inspection as it relates to Tenant's
occupancy and use of the Premises, access to the Premises and parking, at the
cost and expense of Landlord. Landlord shall, on reasonable prior written notice
to Tenant, have the right to take over such Inspection, provided that Landlord
takes over such Inspection promptly, and diligently and in good faith prosecutes
same to completion. In all cases where Tenant has the right to inspect at
Landlord's cost (whether or not Landlord takes over the Inspection), Landlord
shall reimburse Tenant for all of Tenant's out-of-pocket costs of Inspection
within ten (10) business days of Landlord's receipt of written request and
invoices for same from Tenant. Landlord shall have twenty-four (24) hours to
review and comment on the Inspection conclusions prepared by Tenant's Inspection
team. After the expiration of said twenty-four (24) hours, Tenant may proceed
with occupancy and/or restoration at the cost and expense of Landlord. Landlord
shall, on reasonable prior written notice to Tenant, have the right to take over
such restoration, provided that Landlord takes over such restoration promptly,
and diligently and in good faith prosecutes same to completion. In all cases
where Tenant has the right to restore at Landlord's cost (whether or not
Landlord takes over the restoration), Landlord shall reimburse Tenant for all of
Tenant's out-of-pocket costs of restoration within ten (10) business days of
Landlord's receipt of written request and invoices for same from Tenant. Tenant
shall assume full responsibility for any and all restoration and repairs
performed by Tenant; provided that except to the extent of any negligence or
willful misconduct by Tenant, Tenant's responsibility shall be limited to
Tenant's employees, contractors, customers and agents, and shall not extend to
any other tenants or other individuals or entities in the Building or Project.
If the City of Lake Forest prohibits further occupancy of all or part of the
Building, Tenant shall be entitled to use whatever means as necessary under the
circumstances to promptly remove Tenant's personal property and fixtures from
the Premises.

        20.2 Tenant's Costs and Insurance Proceeds. In the event of any damage
or destruction of all or any part of the Premises, Tenant shall immediately: (a)
notify Landlord thereof; and (b) deliver to Landlord all insurance proceeds
received by Tenant with respect to the Leasehold Improvements in the Premises
but only to the extent that such items are not covered by Landlord's casualty
insurance obtained by Landlord pursuant to Paragraph 23 below (excluding
proceeds for Tenant's furniture and other personal property), whether or not
this Lease is terminated as permitted in this Paragraph 20, and Tenant hereby
assigns to Landlord all rights to receive such insurance proceeds.

                If, for any reason (including Tenant's failure to obtain
insurance for the full replacement cost of any Tenant Changes which Tenant is
required to insure pursuant to Subparagraphs 14.1(c) and/or 22.1(a) hereof),
Tenant fails to receive insurance proceeds covering the full replacement cost of
such Tenant Changes which are damaged, Tenant shall be deemed to have
self-insured the replacement cost of such Tenant Changes, and upon any damage or
destruction thereto, Tenant shall immediately pay to Landlord the full
replacement cost of such items, less any insurance proceeds actually received by
Landlord from Landlord's or Tenant's insurance with respect to such items, but
only to the extent that Landlord is required to or elects to reconstruct the
same for Tenant's use as provided in this Lease.

        20.3 Abatement of Rent. In the event that as a result of any such
damage, repair, reconstruction and/or restoration of the Premises or the
Building, Tenant is prevented from using, and does not use, the Premises or any
portion thereof for five (5) consecutive business days (the "Eligibility
Period"), then the rent shall be abated or reduced, as the case may be, during
the period after the expiration of the Eligibility Period that Tenant continues
to be so prevented from

                                       20
<PAGE>   24

using and does not use the Premises or portion thereof, in the proportion that
the Rentable Square Feet of the portion of the Premises that Tenant is prevented
from using, and does not use, bears to the total Rentable Square Feet of the
Premises. Notwithstanding the foregoing to the contrary, if the damage is due to
the negligence or willful misconduct of Tenant or any Tenant Parties, there
shall be no abatement of rent.

        20.4 Inability to Complete. Notwithstanding anything to the contrary
contained in this Paragraph 20, in the event Landlord is obligated or elects to
repair, reconstruct and/or restore the damaged portion of the Building or
Premises pursuant to Subparagraph 20.1 above, but is delayed from completing
such repair, reconstruction and/or restoration beyond the date which is six (6)
months after the date estimated by Landlord's contractor for completion thereof
pursuant to Subparagraph 20.1, by reason of any causes beyond the reasonable
control of Landlord (including, without limitation, any acts of God, war,
governmental restrictions, and delays caused by Tenant or any Tenant Parties),
then Landlord may elect to terminate this Lease upon thirty (30) days' prior
written notice to Tenant provided all leases for all similarly situated tenants
in similar situations are also terminated.

        20.5 Damage Near End of Term. In addition to its termination rights in
Subparagraphs 20.1 and 20.4 above, Landlord shall have the right to terminate
this Lease if any damage to the Building or Premises occurs during the last
twelve (12) months of the Term of this Lease and Landlord's contractor estimates
in a writing delivered to the parties that the repair, reconstruction or
restoration of such damage cannot be completed within the earlier of (a) the
scheduled expiration date of the Lease Term, or (b) sixty (60) days after the
date of such casualty.

        20.6 Tenant's Termination Right. Upon the occurrence of any damage or
destruction to the Building which materially affects Tenant's ability to use the
Premises, Landlord shall provide to Tenant a written notice of Landlord's
contractor's reasonable estimate of the time required to complete the repair and
restoration of such damage or destruction (the "Time Estimate"). If the Time
Estimate estimates that such repair and restoration will take more than) two
hundred seventy (270) days to complete (measured from the date of occurrence of
such damage or destruction) Tenant may elect to terminate this Lease upon
written notice to Landlord, which notice shall be given, if at all, within
twenty (20) days following Tenant's receipt of the Time Estimate. If Tenant
fails to deliver notice of Tenant's election to terminate this Lease to Landlord
within such twenty (20) day period, Tenant shall not have any right to terminate
this Lease as a result of such damage or destruction. Once such notice has been
delivered, if this Lease is not terminated thereby, as long as Landlord has not
elected to terminate as otherwise allowed by the above provisions of this
Paragraph 20, Landlord shall proceed to undertake its repair and restoration
obligations under this Paragraph 20 and Tenant shall not have the right to
terminate this Lease as a result of the occurrence of such damage or
destruction, and Landlord agrees to use diligent efforts to complete the
restoration work in a timely manner.

        20.7 Waiver of Other Termination Rights. The provisions of California
Civil Code Section 1932, Subsection 2, and Section 1933, Subsection 4 (and any
successor statutes thereof permitting Tenant to terminate this Lease as a result
of any damage or destruction) are hereby expressly waived by Tenant, and
Tenant's only termination rights relating to damage to or destruction of the
Premises shall be as set forth in Subparagraph 20.1, 20.4, 20.5 and 20.6 above.

21. EMINENT DOMAIN.

        21.1 Substantial Taking. Subject to the provisions of Subparagraph 21.4
below, in case the whole of the Premises, or such part thereof as shall
substantially interfere with Tenant's use and occupancy of the Premises as
reasonably determined by Landlord, shall be taken for any public or quasi-public
purpose by any lawful power or authority by exercise of the right of
appropriation, condemnation or eminent domain, or sold to prevent such taking,
either party shall have the right to terminate this Lease effective as of the
date possession is required to be surrendered to said authority.

        21.2 Partial Taking; Abatement of Rent. In the event of a taking of a
portion of the Premises which does not substantially interfere with the conduct
of Tenant's business, then, except as otherwise provided in the immediately
following sentence, neither party shall have the right to terminate this Lease
and Landlord shall thereafter proceed to make a functional unit of the remaining
portion of the Premises (but only to the extent Landlord receives proceeds
therefor from the condemning authority), and rent shall be abated with respect
to the part of the Premises which Tenant shall be so deprived on account of such
taking. Notwithstanding the immediately

                                       21
<PAGE>   25

preceding sentence to the contrary, if any part of the Building or the Site
shall be taken (whether or not such taking substantially interferes with
Tenant's use of the Premises), Landlord may terminate this Lease upon thirty
(30) days' prior written notice to Tenant as long as Landlord also terminates
leases of other tenants leasing comparably sized space within the Building for
comparable lease terms.

        21.3 Condemnation Award. Subject to the provisions of Subparagraph 21.4
below, in connection with any taking of the Premises or Building, Landlord shall
be entitled to receive the entire amount of any award which may be made or given
in such taking or condemnation, without deduction or apportionment for any
estate or interest of Tenant, it being expressly understood and agreed by Tenant
that no portion of any such award shall be allowed or paid to Tenant for any
so-called bonus or excess value of this Lease, and such bonus or excess value
shall be the sole property of Landlord. Tenant shall not assert any claim
against Landlord or the taking authority for any compensation because of such
taking (including any claim for bonus or excess value of this Lease); provided,
however, if any portion of the Premises is taken, Tenant shall be granted the
right to recover from the condemning authority (but not from Landlord) any
compensation as may be separately awarded or recoverable by Tenant for the
taking of Tenant's furniture, fixtures, equipment and other personal property
within the Premises, for Tenant's relocation expenses, and for any loss of
goodwill or other damage to Tenant's business by reason of such taking, and for
any Leasehold Improvements and Tenant Changes which remain Tenant's property as
of the expiration or sooner termination of this Lease (if any).

        21.4 Temporary Taking. In the event of a taking of the Premises or any
part thereof for temporary use, (a) this Lease shall be and remain unaffected
thereby and rent shall not abate, and (b) Tenant shall be entitled to receive
for itself such portion or portions of any award made for such use with respect
to the period of the taking which is within the Term. For purpose of this
Subparagraph 21.4, a temporary taking shall be defined as a taking for a period
of ninety (90) days or less.

22. TENANT'S INSURANCE.

        22.1 Types of Insurance. On or before the earlier of the Commencement
Date or the date Tenant commences or causes to be commenced any work of any type
in or on the Premises pursuant to this Lease, and continuing during the entire
Term, Tenant shall obtain and keep in full force and effect, the following
insurance in connection with Tenant's use or occupancy of the Site and the
Premises:

                (a) All Risk insurance, including fire and extended coverage,
sprinkler leakage, vandalism, malicious mischief upon property of every
description and kind owned by Tenant and located in the Premises or Building, or
for which Tenant is legally liable or installed by or on behalf of Tenant
including, without limitation, furniture, equipment and any other personal
property, and the Tenant Changes to the extent required under Subparagraph
14.1(c) above, (but excluding the initial Leasehold Improvements previously
existing or installed in the Premises), in an amount not less then the full
replacement cost thereof. In the event that there shall be a dispute as to the
amount which comprises full replacement cost, the decision of Tenant's insurer
shall govern.

                (b) Commercial general liability insurance coverage, insuring
Tenant's activities at or otherwise affecting the Project, including personal
injury, bodily injury (including wrongful death), broad form property damage,
operations hazard, owner's protective coverage, contractual liability (including
Tenant's indemnification obligations under this Lease, including Paragraph 19
hereof), liquor liability (if Tenant serves alcohol on the Premises), products
and completed operations liability (maybe on separate policies), and
owned/non-owned auto liability (maybe on separate policies), with initial limits
as follows: general aggregate-not less than Two Million Dollars ($2,000,000.00),
and per occurrence-not less than Two Million Dollars ($2,000,000.00). The limits
of liability of such commercial general liability insurance shall be Z
increased, if adjusted at all, every five (5) years during the Term of this
Lease to an amount reasonably required by Landlord. Tenant may use an umbrella
policy to meet the limits.

                (c) Workers' compensation insurance, in statutory amounts and
limits, and employer's liability insurance with limits as follows: bodily injury
each accident--not less than One Million Dollars ($1,000,000.00), bodily
injury/disease each employee--not less than One Million Dollars ($1,000,000.00),
and a bodily injury/disease policy limit of not less than One Million Dollars
($1,000,000.00).

                                       22
<PAGE>   26

                (d) Business Income insurance in such amount as will reimburse
Tenant for loss of earnings attributable to all perils commonly insured against
by prudent tenants or attributable to prevention of access to the Premises,
Tenant's parking areas or to the Building as a result of such perils.

                (e) Any other form or forms of insurance which are customarily
required by landlords of other comparable Class A quality office buildings
located in the South Orange County office market.

        22.2 Requirements. Each policy required to be obtained by Tenant
hereunder shall: (a) be issued by insurers authorized to do business in the
state in which the Building is located and rated not less than financial class
X, and not less than policyholder rating A- in the most recent version of Best's
Key Rating Guide; (b) be in form reasonably satisfactory from time to time to
Landlord; (c) name Tenant as named insured thereunder and name Landlord and, at
Landlord's request, Landlord's mortgagees and ground lessors of which Tenant has
been informed in writing, as additional insureds thereunder, all as their
respective interests may appear; (d) not have a deductible amount exceeding
Twenty-five Thousand Dollars ($25,000.00); (e) specifically provide that the
insurance afforded by such policy for the benefit of Landlord and Landlord's
mortgagees and ground lessors shall be primary, and any insurance carried by
Landlord or Landlord's mortgagees and ground lessors shall be excess and
non-contributing; (f) except for worker's compensation insurance, contain an
endorsement that the insurer waives its right to subrogation as described in
Paragraph 24 below; and (g) contain an undertaking by the insurer to notify
Landlord (and the mortgagees and ground lessors of Landlord who are named as
additional insureds) in writing not less than thirty (30) days prior to any
cancellation thereof. Tenant agrees to deliver to Landlord, as soon as
practicable after the placing of the required insurance, but in no event later
than ten (10) days after the date Tenant takes possession of all or any part of
the Premises, certified copies of each such insurance policy (or certificates
from the insurance company evidencing the existence of such insurance and
Tenant's compliance with the foregoing provisions of this Paragraph 22). Tenant
shall cause replacement policies or certificates to be delivered to Landlord
prior to the expiration of any such policy or policies, or within five (5)
business days following the expiration of any such policy or policies if not
available until then. If any such initial or replacement policies or
certificates are not furnished within the time(s) specified herein, Tenant,
subject to Subparagraph 22.3, below, shall be deemed to have self-insured for
same. If Tenant does not furnish the required policy(ies) and does not satisfy
the requirements imposed by Subparagraph 22.3, Tenant shall be deemed to be in
material default under this Lease, and Landlord shall have the right, but not
the obligation, to procure such policies and certificates at Tenant's expense.

        22.3 Landlord's and Tenant's Rights to Self-Insure. Notwithstanding
anything herein to the contrary, provided that Tenant maintains a net worth of
at least One Hundred Million Dollars ($100,000,000.00), Tenant may self-insure
for any or all of its insurance obligations hereunder. If Tenant does so
self-insure, all obligations and waivers that would be applicable had Tenant
actually obtained all of the insurance required under this Paragraph 22
(including, without limitation, the waiver of subrogation) will be applicable.
Notwithstanding anything herein to the contrary, provided that Landlord
maintains a net worth of at least One Hundred Million Dollars ($100,000,000.00),
Landlord may self-insure for any or all of its insurance obligations hereunder.
If Landlord does so self-insure, all obligations and waivers that would be
applicable had Landlord actually obtained all of the insurance required under
Paragraph 23 (including, without limitation, the waiver of subrogation) will be
applicable. Landlord shall have the right to self-insure provided the cost of
said self-insuring is not assessed against the Project at a rate higher than an
"A" rated insurer would have charged.

23. LANDLORD'S INSURANCE. During the Term, Landlord shall be required to insure
the Building, the Premises, the Leasehold Improvements initially installed in
the Premises pursuant to Exhibit "D" and certain Tenant Changes to the extent
described in Subparagraph 14.1 (c) above (excluding, however, Tenant's
furniture, equipment and other personal property and those Tenant Changes which
Tenant is obligated to insure pursuant to the provisions of Subparagraphs
14.1(c) and 22.1(a) above) against damage by fire and standard extended coverage
perils and general liability insurance, in such reasonable amounts and with such
reasonable deductibles as are customarily carried by landlords of comparable
Class A quality office buildings located in the South Orange County office
market. At Landlord's option, such insurance may be carried under any blanket or
umbrella policies which Landlord has in force for other buildings and projects.
Landlord may, but shall not be obligated to, carry any other form or forms of
insurance as Landlord or the mortgagees or ground lessors of Landlord may
reasonably determine is

                                       23
<PAGE>   27

advisable, including rental interruption insurance to the extent commercially
reasonable. The cost of insurance obtained by Landlord pursuant to this
Paragraph 23 shall be included in Operating Expenses. If Landlord elects to
self-insure for any of the risks for which Landlord is required to maintain
under this Lease, Landlord shall so notify Tenant, in writing, no less than
twenty (20) days prior to the date on which such self-insurance program is to
become effective. With respect to the general liability insurance initially
obtained by Landlord, such insurance shall be issued by insurers authorized to
do business in the state in which the Building is located and rated not less
than financial class X and policyholder rating A- in the most recent version of
Best's Key Rating Guide, and shall include a deductible amount of not greater
than One Hundred Thousand Dollars ($100,000.00).

24. WAIVERS OF SUBROGATION.

        24.1 Mutual Waiver of Parties. Landlord and Tenant hereby waive their
rights against each other as well as the officers, partners, directors,
employees, agents and authorized representatives of Landlord and Tenant with
respect to any claims or damages or losses (including any claims for bodily
injury to persons and/or damage to property) which are caused by or result from
(a) risks to the extent insured against under any insurance policy carried by
Landlord or Tenant (as the case may be) pursuant to the provisions of this Lease
and enforceable at the time of such damage, loss and/or injury, or (b) risks to
the extent the same would have been covered under any insurance to the extent
required to be obtained and maintained by Landlord or Tenant (as the case may
be) under Paragraphs 22 and 23 of this Lease (as applicable) had such insurance
been obtained and maintained as required therein. The foregoing waivers shall be
in addition to, and not a limitation of, any other waivers or releases contained
in this Lease. In the event that either party elects to self-insure for any of
the risks for which the self-insuring party is required to carry property
insurance under this Lease, then the self-insuring party shall provide the other
party with a commercially reasonable form of written release agreement which
provides the other party with a release of liability to the same extent and for
the same risks as would be afforded to the other party under a waiver of
subrogation under an insurance policy covering the risks for which the
self-insuring party has elected to self-insure; provided that such release shall
be effective upon such self-insurance, even without such a written release.

        24.2 Waiver of Insurer. Each party shall cause each insurance policy
required to be obtained by it pursuant to Paragraphs 22 and 23 (excluding
Tenant's worker's compensation insurance) to provide that the insurer waives all
rights of recovery by way of subrogation against either Landlord or Tenant, as
the case may be, and against the officers, employees, agents, partners and
authorized representatives of Landlord and Tenant in connection with any claims,
losses and damages covered by such policy. If either party fails to maintain
insurance required hereunder, such insurance shall be deemed to be self-insured
with a deemed full waiver of subrogation as set forth in the immediately
preceding sentence.

25. TENANT'S DEFAULT AND LANDLORD'S REMEDIES.

        25.1 Tenant's Default. Tenant shall not be in default under the Lease
unless and until it receives written notice of any alleged breach of the Lease
(if notice is required below) and all applicable cure and notice periods have
expired. The occurrence of any one or more of the following events shall
constitute a default under this Lease by Tenant:

                (a) the failure by Tenant to make any payment of rent or
additional rent or any other payment required to be made by Tenant hereunder
within five (5) business days following Tenant's receipt of written notice from
Landlord that such payment is due;

                (b) the failure by Tenant to timely perform any of those
covenants described in Paragraphs 8.2, 15, 22.2 and 27 of this Lease (which
Paragraphs expressly provide for specific notices and cure periods and provide
that Tenant's failure to comply with the requests or notices within the time
periods provided therein shall be deemed a default by Tenant under this Lease
without any additional notice or cure periods);

                (c) the failure by Tenant to observe or perform any of the
express or implied covenants or provisions of this Lease to be observed or
performed by Tenant, other than as specified in Subparagraphs 25.1(a) or (b)
above, where such failure shall continue for a period of twenty (20) days after
Tenant's receipt of written notice thereof from Landlord to Tenant; provided,
however, that any such notice shall be in lieu of, and not in addition to, any
notice

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<PAGE>   28

required under California Code of Civil Procedure, Section 1161 and provided
further that, if the nature of Tenant's default is such that more than twenty
(20) days are reasonably required for its cure, then Tenant shall not be deemed
to be in default if Tenant shall commence such cure within said twenty (20) day
period and thereafter diligently prosecute such cure to completion, which
completion shall occur not later than sixty (60) days from the date of such
notice from Landlord (but provided, however, that if the default does not
materially physically harm the Building or any other part of the Site and it is
objectively impossible to complete such cure within sixty (60) days [excluding
impossibility due to Tenant's financial inability to perform], Tenant shall so
notify Landlord and shall advise Landlord of the actual time period reasonably
necessary to effect such cure, and shall effect such cure within the actual time
period reasonably necessary to not be in default if Tenant effects such cure);
and

                (d) (i) the making by Tenant of any general assignment for the
benefit of creditors, (ii) the filing by or against Tenant of a petition to have
Tenant adjudged a bankrupt or a petition for reorganization or arrangement under
any law relating to bankruptcy (unless, in the case of a petition filed against
Tenant, the same is dismissed within sixty (60) days), (iii) the appointment of
a trustee or receiver to take possession of substantially all of Tenant's assets
located at the Premises or of Tenant's interest in this Lease, where possession
is not restored to Tenant within sixty (60) days, or (iv) the attachment,
execution or other judicial seizure of substantially all of Tenant's assets
located at the Premises or of Tenant's interest in this Lease where such seizure
is not discharged within sixty (60) days.

        25.2 Landlord's Remedies; Termination. In the event of any such default
by Tenant, in addition to any other remedies available to Landlord under this
Lease, at law or in equity, Landlord shall have the immediate option to
terminate this Lease and all rights of Tenant hereunder. In the event that
Landlord shall elect to so terminate this Lease, then Landlord may recover from
Tenant:

                (a) the worth at the time of award of any unpaid rent which had
been earned at the time of such termination; plus

                (b) the worth at the time of the award of the amount by which
the unpaid rent which would have been earned after termination until the time of
award exceeds the amount of such rental loss that Tenant proves could have been
reasonably avoided; plus

                (c) the worth at the time of award of the amount by which the
unpaid rent for the balance of the term after the time of award exceeds the
amount of such rental loss that Tenant proves could be reasonably avoided; plus

                (d) any other amount necessary to compensate Landlord for all
the detriment proximately caused by Tenant's failure to perform its obligations
under this Lease or which, in the ordinary course of things, would be likely to
result therefrom including, but not limited to: attorneys' fees; brokers'
commissions; the costs of refurbishment, alterations, renovation and repair of
the Premises; and removal (including the repair of any damage caused by such
removal) and storage (or disposal) of Tenant's personal property, equipment,
fixtures, Tenant Changes, Leasehold Improvements and any other items which
Tenant is required under this Lease to remove but does not remove.

                As used in Subparagraphs 25.2(a) and 25.2(b) above, the "worth
at the time of award" is computed by allowing interest at the Interest Rate set
forth in Subparagraph 1.18. As used in Subparagraph 25.2(c) above, the "worth at
the time of award" is computed by discounting such amount at the discount rate
of the Federal Reserve Bank of San Francisco at the time of award plus one
percent (1%).

        25.3 Landlord's Remedies; Re-Entry Rights. In the event of any such
default by Tenant, in addition to any other remedies available to Landlord under
this Lease, at law or in equity, Landlord shall also have the right, with or
without terminating this Lease, to re-enter the Premises and remove all persons
and property from the Premises; such property may be removed, stored and/or
disposed of pursuant to Subparagraph 14.4 of this Lease or any other procedures
permitted by applicable law. No re-entry or taking possession of the Premises by
Landlord pursuant to this Subparagraph 25.3, and no acceptance of surrender of
the Premises or other action on Landlord's part, shall be construed as an
election to terminate this Lease unless a written notice of such intention be
given to Tenant or unless the termination thereof be decreed by a court of
competent jurisdiction.

                                       25
<PAGE>   29

        25.4 Landlord's Remedies; Continuation of Lease. In the event of any
such default by Tenant, in addition to any other remedies available to Landlord
under this Lease, at law or in equity, Landlord shall have the right to continue
this Lease in full force and effect, whether or not Tenant shall have abandoned
the Premises. The foregoing remedy shall also be available to Landlord pursuant
to California Civil Code Section 1951.4 and any successor statute thereof in the
event Tenant has abandoned the Premises. In the event Landlord elects to
continue this Lease in full force and effect pursuant to this Subparagraph 25.4,
then Landlord shall be entitled to enforce all of its rights and remedies under
this Lease, including the right to recover rent as it becomes due. Landlord's
election not to terminate this Lease pursuant to this Subparagraph 25.4 or
pursuant to any other provision of this Lease, at law or in equity, shall not
preclude Landlord from subsequently electing to terminate this Lease or pursuing
any of its other remedies.

        25.5 Rights and Remedies Cumulative. All rights, options and remedies of
Landlord contained in this Paragraph 25 and elsewhere in this Lease (including
Paragraph 29 below) shall be construed and held to be cumulative, and no one of
them shall be exclusive of the other, and Landlord shall have the right to
pursue any one or all of such remedies or any other remedy or relief which may
be provided by law or in equity, whether or not stated in this Lease. Nothing in
this Paragraph 25 shall be deemed to limit or otherwise affect Tenant's
indemnification of Landlord pursuant to any provision of this Lease.

        25.6 Arbitration. Should a dispute arise between the parties regarding
any matter described above, then except with respect to actions for unlawful or
forcible detainer, either party may cause the dispute to be submitted to
JAMS/ENDISPUTE ("JAMS") in Orange County, California, for binding arbitration.
However, each party reserves the right to seek a provisional remedy by judicial
action. No arbitration election by either party pursuant to this subparagraph
shall be effective if made later than thirty (30) days following service of a
judicial summons and complaint by or upon such party concerning the dispute. The
arbitration shall be conducted in accordance with the rules of practice and
procedure of JAMS and otherwise pursuant to the California Arbitration Act (Code
of Civil Procedure Section 1280 et seq.). The arbitrator shall apportion the
costs of the arbitration, together with the attorneys' fees of the parties, in
the manner deemed equitable by the arbitrator, it being the intention of the
parties that the prevailing party ordinarily be entitled to recover its
reasonable costs and fees. Judgment upon any award rendered by the arbitrator
may be entered by any court having jurisdiction

26. LANDLORD'S DEFAULT. Landlord shall not be in default in the performance of
any obligation required to be performed by Landlord under this Lease unless
Landlord has failed to perform such obligation within thirty (30) days after the
receipt of written notice from Tenant specifying in detail Landlord's failure to
perform; provided however, that if the nature of Landlord's obligation is such
that more than thirty (30) days are required for its performance, then Landlord
shall not be deemed in default if it commences such performance within such
thirty (30) day period and thereafter diligently pursues the same to completion.
Upon any such uncured default by Landlord, Tenant may exercise any of its rights
provided in law or at equity; provided, however: (a) Tenant shall have no right
to offset or abate rent in the event of any default by Landlord under this
Lease, except to the extent offset rights are specifically provided to Tenant in
this Lease; and (b) Tenant's rights and remedies hereunder shall be limited to
the extent (I) Tenant has expressly waived in this Lease any of such rights or
remedies and/or (ii) this Lease otherwise expressly limits Tenant's rights or
remedies, including the limitation on Landlord's liability contained in
Paragraph 34 hereof.

27. SUBORDINATION. Without the necessity of any additional document being
executed by Tenant for the purpose of effecting a subordination, and at the
election of Landlord or any mortgagee of a mortgage or a beneficiary of a deed
of trust now or hereafter encumbering all or any portion of the Building or
Site, or any lessor of any ground or master lease now or hereafter affecting all
or any portion of the Building or Site, this Lease shall be subject and
subordinate at all times to such ground or master leases (and such extensions
and modifications thereof), and to the lien of such mortgages and deeds of trust
(as well as to any advances made thereunder and to all renewals, replacements,
modifications and extensions thereof). As a condition precedent to the
effectiveness of any such subordination of this Lease to any future ground or
master leases or the lien of any future mortgages or deeds of trust, Landlord
shall provide to Tenant a commercially reasonable non-disturbance and attornment
agreement in recordable form in favor of Tenant in a mutually acceptable form
executed by such future ground lessor, master lessor, mortgagee or deed of trust
beneficiary, as the case may be, which shall provide that Tenant's quiet
possession of the Premises shall not be disturbed on account of such
subordination to such future lease or lien so long as Tenant is not in default
beyond any applicable cure period under

                                       26
<PAGE>   30

any provisions of this Lease. Notwithstanding the foregoing, Landlord shall have
the right to subordinate or cause to be subordinated any or all ground or master
leases or the lien of any or all mortgages or deeds of trust to this Lease. In
the event that any ground or master lease terminates for any reason or any
mortgage or deed of trust is foreclosed or a conveyance in lieu of foreclosure
is made for any reason, at the election of Landlord's successor in interest,
Tenant shall attorn to and become the tenant of such successor. Tenant hereby
waives its rights under any current or future law which gives or purports to
give Tenant any right to terminate or otherwise adversely affect this Lease and
the obligations of Tenant hereunder in the event of any such foreclosure
proceeding or sale. Tenant covenants and agrees to execute and deliver to
Landlord within fifteen (15) business days after receipt of written demand by
Landlord and in the form reasonably required by Landlord, any additional
documents evidencing the priority or subordination of this Lease with respect to
any such ground or master lease or the lien of any such mortgage or deed of
trust. Should Tenant fail to sign and return any such documents within said 15
business day period. Tenant shall be in default hereunder without the benefit of
any additional notice or cure periods specified in Subparagraph 25.1 above.

                Landlord further agrees that it shall obtain and deliver to
Tenant, within fifteen (15) business days of the execution of this Lease by
Landlord and Tenant, a commercially reasonable non-disturbance and attornment
agreement in recordable form in favor of Tenant in a mutually acceptable form
executed by each and every existing mortgagee of a mortgage or beneficiary of a
deed of trust encumbering all or any portion of the Building or Site, and any
lessor of any ground or master lease affecting all or any portion of the
Building or Site, which shall provide that Tenant's quiet possession of the
Premises shall not be disturbed on account of such mortgage, deed of trust,
ground lease or master lease or the foreclosure (or sale in lieu thereof) or
termination of same so long as Tenant is not in default beyond any applicable
notice and cure period under any provisions of this Lease. For purposes hereof,
any non-disturbance and attornment agreement in a form customarily utilized by a
reputable bank or similar financial institution is hereby approved by Tenant and
Landlord.

28. ESTOPPEL CERTIFICATE.

        28.1 Tenant's Obligations. Within twenty (20) business days following
Landlord's written request, Tenant shall execute and deliver to Landlord an
estoppel certificate, in a form substantially similar to the form of Exhibit "G"
attached hereto, certifying: (a) the Commencement Date of this Lease; (b) that
this Lease is unmodified and in full force and effect (or, if modified, that
this Lease is in full force and effect as modified, and stating the date and
nature of such modifications); (c) the date to which the rent and other sums
payable under this Lease have been paid; (d) that there are not, to the best of
Tenant's knowledge, any defaults under this Lease by either Landlord or Tenant,
except as specified in such certificate; and (e) such other matters as are
reasonably requested by Landlord (which matters may be certified to the best of
Tenant's knowledge to the extent such matters are not capable of being
objectively known to Tenant with certainty). Landlord's request for such an
estoppel certificate shall be delivered to Tenant and to Tenant's Law Department
(provided Tenant has supplied Landlord with a current address for Tenant's Law
Department) by certified or express mail or by overnight delivery service (such
as Federal Express), with other copies provided in the manner specified in this
Lease for delivery of notices. Any such estoppel certificate delivered pursuant
to this Subparagraph 28.1 may be relied upon by any mortgagee, beneficiary,
purchaser or prospective purchaser of any portion of the Site, as well as their
assignees.

        28.2 Tenant's Failure to Deliver. Tenant's failure to deliver such
estoppel certificate within such time shall be conclusive upon Tenant that: (a)
this Lease is in full force and effect without modification, except as may be
represented by Landlord; (b) there are no uncured defaults in Landlord's or
Tenant's performance; and (c) not more than one (1) month's rental has been paid
in advance.

29. PERFORMANCE BY TENANT; INTEREST AND LATE CHARGES.

        29.1 Landlord's Right to Perform. Except as specifically provided
otherwise in this Lease, all covenants and agreements by Tenant under this Lease
shall be performed by Tenant at Tenant's sole cost and expense and without any
abatement or offset of rent unless as otherwise stated elsewhere in this Lease.
If Tenant shall fail to pay any sum of money (other than Annual Basic Rent) or
perform any other act on its part to be paid or performed hereunder and such
failure shall continue for five business (5) days with respect to monetary
obligations (or ten (10) days with respect to non-monetary obligations) after
Tenant's receipt of written notice thereof

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<PAGE>   31

from Landlord, Landlord may, without waiving or releasing Tenant from any of
Tenant's obligations, make such payment or perform such other act on behalf of
Tenant. All sums so paid by Landlord and all necessary incidental costs incurred
by Landlord in performing such other acts shall be payable by Tenant to Landlord
within five (5) business days after Tenant's receipt of demand therefor as
additional rent. The foregoing rights are in addition to any and all remedies
available to Landlord upon Tenant's default as described in Paragraph 25.

        29.2 Interest. If any monthly installment of Annual Basic Rent or Excess
Expenses, or other amount payable by Tenant or Landlord hereunder is not
received by the other party within ten (10) days after the date when due, it
shall bear interest at the Interest Rate set forth in Subparagraph 1.19 from the
date due until paid.

        29.3 Late Charges. Tenant acknowledges that, in addition to interest
costs, the late payments by Tenant to Landlord of any Annual Basic Rent or other
sums due under this Lease will cause Landlord to incur costs not contemplated by
this Lease, the exact amount of such costs being extremely difficult and
impractical to fix. Such other costs include, without limitation, processing,
administrative and accounting charges and late charges that may be imposed on
Landlord by the terms of any mortgage, deed of trust or related loan documents
encumbering the Premises, the Building or the Site. Accordingly, if any monthly
installment of Annual Basic Rent or Excess Expenses or any other amount payable
by Tenant hereunder is not received by Landlord by the due date thereof, Tenant
shall pay to Landlord an additional sum of four percent (4%) of the overdue
amount as a late charge. Notwithstanding the foregoing, with respect to the
first late charge against Tenant during each calendar year, Landlord shall waive
such late charge. The parties agree that such late charge represents a fair and
reasonable estimate of the costs that Landlord will incur by reason of any late
payment as hereinabove referred to by Tenant, and the payment of late charges
and interest are distinct and separate in that the payment of interest is to
compensate Landlord for the use of Landlord's money by Tenant, while the payment
of late charges is to compensate Landlord for Landlord's processing,
administrative and other costs incurred by Landlord as a result of Tenant's
delinquent payments. Acceptance of a late charge or interest shall not
constitute a waiver of Tenant's default with respect to the overdue amount or
prevent Landlord from exercising any of the other rights and remedies available
to Landlord under this Lease or at law or in equity now or hereafter in effect.

30. CURE RIGHTS OF LANDLORD'S MORTGAGEES AND LESSORS. In the event of any
default on the part of Landlord, Tenant will give notice by registered or
certified mail to any beneficiary of a deed of trust or mortgagee covering the
Premises or ground lessor of Landlord whose address shall have been furnished to
Tenant, and shall offer such beneficiary, mortgagee or ground lessor the same
opportunity to cure the default as is afforded Landlord pursuant to this Lease.

31. TRANSFER OF OWNER'S INTEREST. The term "Landlord" as used in this Lease, so
far as covenants or obligations on the part of the Landlord are concerned, shall
be limited to mean and include only the owner or owners, at the time in
question, of the fee title to, or a lessee's interest in a ground lease of, the
Site. In the event of any transfer or conveyance of any such title or interest
(other than a transfer for security purposes only), the transferor shall be
automatically relieved of all covenants and obligations on the part of Landlord
contained in this Lease accruing after the date of such transfer or conveyance
to the extent the transferee expressly assumes the same. Landlord and Landlord's
transferees and assignees shall have the absolute right to transfer all or any
portion of their respective title and interest in the Site, the Building, the
Premises and/or this Lease without the consent of Tenant, and such transfer or
subsequent transfer shall not be deemed a violation on Landlord's part of any of
the terms and conditions of this Lease.

32. QUIET ENJOYMENT. Landlord covenants and agrees with Tenant that, upon Tenant
performing all of the covenants and provisions on Tenant's part to be observed
and performed under this Lease (including payment of rent hereunder), Tenant
shall and may peaceably and quietly have, hold and enjoy the Premises in
accordance with and subject to the terms and conditions of this Lease.

33. PARKING.

        33.1 Tenant's Parking Spaces. During the Term of this Lease (as the same
may be extended or renewed), Landlord shall provide to Tenant the number of
parking spaces specified in Subparagraph 1.21 hereof for use by Tenant's
employees or a nonexclusive basis in the common parking areas for the Building
within the Project, as designated by Landlord from time to time. Landlord shall
at all times have the right to establish and modify, on a non-discriminatory
basis, the nature and extent of the parking areas for the Building and Project
(including whether such areas shall be surface, underground and/or other
structures) as long as Tenant is provided, on a non-

                                       28
<PAGE>   32

discriminatory basis, the number of parking spaces designated in Subparagraph
1.21. Tenant and its employees shall be provided access to the parking areas for
the Project seven (7) days a week and twenty-four (24) hours per day. Throughout
the entire Lease Term (as the same may be extended and/or renewed) the parking
spaces provided to Tenant as specified in Subparagraph 1.21 and visitor parking
for Tenant's guests and invitees shall be free of charge. However, all costs of
operating, maintaining and repairing the parking areas shall be included as
Operating Expenses.

        33.2 Visitor Parking. In addition to such parking spaces for use by
Tenant's employees, Landlord shall permit access to the parking areas for
Tenant's visitors, subject to availability of spaces.

        33.3 Parking Rules. The use of the parking areas shall be subject to the
Parking Rules and Regulations attached hereto as Exhibit "H" and any other
reasonable, non-discriminatory rules and regulations adopted by Landlord and/or
Landlord's parking operators from time to time, including any system for
controlled ingress and egress. Tenant shall not use more parking spaces than its
allotment and shall not use any parking spaces specifically assigned by Landlord
to other tenants of the Building or Project or for such other uses as visitor
parking. Tenant's parking spaces shall be used only for parking by vehicles no
larger than normally sized passenger automobiles or pick-up trucks and vans.
Tenant shall not permit or allow any vehicles that belong to or are controlled
by Tenant or Tenant's employees, suppliers, shippers, customers or invitees to
be loaded, unloaded, or parked in areas other than those designated by Landlord
for such activities. If Tenant permits or allows any of the prohibited
activities described herein, then Landlord shall have the right, without notice,
in addition to such other rights and remedies that it may have, to remove or tow
away the vehicle involved and charge the cost thereof to Tenant, which cost
shall be immediately payable by Tenant upon demand by Landlord.

34. LIMITATION ON LANDLORD'S LIABILITY. Notwithstanding anything contained in
this Lease to the contrary, the obligations of Landlord under this Lease
(including any actual or alleged breach or default by Landlord) do not
constitute personal obligations of the individual partners, directors, officers,
members or shareholders of Landlord or Landlord's partners, and Tenant shall not
seek recourse against the individual partners, directors, officers, members or
shareholders of Landlord or Landlord's partners, or any of their personal assets
for satisfaction of any liability with respect to this Lease. In addition, in
consideration of the benefits accruing hereunder to Tenant and notwithstanding
anything contained in this Lease to the contrary, Tenant hereby covenants and
agrees for itself and all of its successors and assigns that the liability of
Landlord for its obligations under this Lease (including any liability as a
result of any actual or alleged failure, breach or default hereunder by
Landlord), shall be limited to the fair market value of Landlord's equity
interest in the Site. The foregoing provisions are not intended to relieve
Landlord from the performance of any of Landlord's obligations under this Lease,
but only to limit the personal liability of Landlord in case of recovery of a
judgment against Landlord, nor shall this Paragraph 34 be deemed to limit
Tenant's rights to obtain injunctive relief or specific performance or other
remedy which may be accorded Tenant at law, in equity or under this Lease.
Notwithstanding the foregoing, should Landlord elect to self-insure for any of
the risks for which insurance is required to be carried by Landlord under this
Lease, the limitation of liability provided in this Paragraph 34 shall not apply
to the extent that: (a) Tenant has a claim against Landlord for sums that would
have been paid by Landlord's insurance had Landlord carried such insurance; and
(b) the value of Landlord's interest in the Site and the proceeds therefrom is
insufficient to satisfy such claim.

35. HAZARDOUS MATERIALS.

        35.1 Tenant's and Landlord's Covenants. In addition to its other
obligations under this Lease (including Paragraph 8 hereof), Tenant covenants to
comply with all applicable laws relating to Hazardous Materials with respect to
the Premises, the Building and the Site. Except for general office supplies
typically used in an office area in the ordinary course of business (such as
copier toner, liquid paper, glue, ink, and cleaning solvents), for use in the
manner for which they were designed and only in accordance with all Hazardous
Materials laws and the highest standards prevailing in the industry for such
use, and then only in such amounts as may be normal for the office business
operations conducted by Tenant on the Premises, neither Tenant nor any Tenant
Parties (as defined in Subparagraph 19.1) shall use, handle, store or dispose of
any Hazardous Materials in, on, under or about the Premises, the Building or the
Site.

                                       29
<PAGE>   33

Tenant shall promptly take all actions, at its sole cost and expense, as are
necessary to return the Premises, Building, Site and Project to the condition
existing prior to the introduction of any such Hazardous Materials by Tenant or
any Tenant Parties, provided Landlord's approval of such actions shall first be
obtained, except in the case of an emergency, in which case Tenant shall notify
Landlord of such actions as soon as is reasonably possible. Furthermore, Tenant
shall immediately notify Landlord of any inquiry, test, investigation or
enforcement proceeding by or against Tenant or the Premises concerning the
presence of any Hazardous Material. In addition to its other obligations under
this Lease, Landlord covenants to comply with all applicable laws relating to
Hazardous Materials with respect to the Premises, the Building and the Site.
Except for general office supplies typically used in an office area in the
ordinary course of business, except for petroleum, oils, and other items used in
connection with the operation of automobiles and other equipment, and except for
common and customary construction materials (including, without limitation,
solvents, lubricants, fuels, mastics and adhesives) and common cleaning and
janitorial supplies reasonably necessary for the maintenance, operation, repair
and improvement of the Project, Building and the Site, for use in the manner for
which they were designed and only in accordance with all Hazardous Materials
laws and reasonable prudent standards prevailing in the industry for such use,
and then only in such amounts as may be normal for the office business
operations conducted by Landlord on the Site, neither Landlord nor any of
Landlord's partners, officers, contractors, directors or employees
(collectively, "Landlord Parties") shall use, handle, store or dispose of any
Hazardous Materials in, on, under or about the Premises, the Building or the
Site in violation of any restrictions or limitations contained in this Lease or
applicable law. In addition, neither Landlord nor any Landlord Parties shall
allow any noxious, toxic or irritating gases, vapors, liquids, or solid
materials (collectively, "Noxious Substances"), or, except as expressly
permitted by this Paragraph 35, Hazardous Materials, to be released into, flow
or seep into, or be placed into the Premises. Landlord shall promptly take all
actions, at its sole cost and expense, as are necessary to maintain the
Premises, Building, Site and Project in the condition existing prior to the
introduction of any such Hazardous Materials and/or Noxious Substances by
Landlord or any Landlord Parties. Landlord shall promptly provide Tenant with
any notices relating to Hazardous Materials which Landlord is obligated to
provide Tenant under applicable laws. In addition, neither Tenant nor any Tenant
Parties shall allow any Noxious Substances or, except as expressly permitted by
this Paragraph 35, Hazardous Materials, to be released into, flow or seep into,
or be placed into the Premises. Tenant shall promptly take all actions, at its
sole cost and expense, as are necessary to maintain the Premises, Building, Site
and Project in the condition existing prior to the introduction of any Hazardous
Materials and/or Noxious Substances by Tenant or any Tenant Parties. Tenant
shall promptly provide Landlord with any notices relating to Hazardous Materials
which Tenant is obligated to provide Landlord under applicable laws. To
Landlord's actual knowledge, the Site does not contain any Hazardous Materials
as of the date of this Lease, except as permitted by this subparagraph 35.1

        35.2 Indemnities. Tenant shall be solely responsible for and shall
indemnify, defend (with counsel reasonably approved by Landlord) and hold
Landlord harmless from and against any and all claims, judgments, suits, causes
of action, damages, penalties, fines, liabilities, losses and expenses
(including, without limitation, investigation and clean-up costs, attorneys'
fees, consultant fees and court costs) which arise during or after the Term of
this Lease as a result of Tenant's breach of any of the obligations and
covenants set forth in Subparagraph 35.1 above, and/or any contamination of the
Premises, Building, Site or Project directly or indirectly arising from the
activities of Tenant or any Tenant Parties. Tenant shall not be responsible for
any costs or expenses relating the remediation or cleanup of Hazardous Materials
which were located on, under or about the Project prior to the date of this
Lease or which are placed or discharged on or about the Project by Landlord,
Landlord's employees, contractors or agents or any individual or entity other
than Tenant or one or more Tenant Parties (collectively referred to as
"Non-Tenant Conditions"). Landlord agrees to indemnify, defend (with counsel
reasonably approved by Tenant) and hold Tenant harmless from any and all claims,
judgments, suits, causes of action, damages, penalties, fines, liabilities,
losses and expenses (including any and all sums paid for defense or settlement
of claims, attorneys' fees, consultant, and expert fees) arising during or after
the Lease Term from or in connection with Landlord's breach of any of the
obligations and covenants set forth in Subparagraph 35.1 above. The Landlord
will fully indemnify and hold harmless Tenant from all costs and expenses,
including attorneys' fees, that Tenant may incur as a result of the presence of
or release of hazardous substances on the property prior to the effective date
of the tenancy. In addition, if Tenant is prevented from using, and does not
use, the Premises or any portion thereof due to the existence of any Non-Tenant
Conditions and/or as a result of Landlord's breach of any of the obligations and
covenants set forth in Subparagraph 35.1 above, (a) then Tenant's rent shall
immediately be abated and/or reduced beginning on the

                                       30
<PAGE>   34

date that Tenant is prevented from using, and does not use the Premises or any
portion thereof in a proportionate amount for rent to be charged until the first
day after the date that Tenant is again reasonably able to use One Hundred
Percent (100%) of the Premises; and (b) if Tenant is prevented from using, and
does not use, the Premises or any portion thereof as specified above, for a
period of one hundred fifty (150) consecutive days or two hundred seventy (270)
days in any consecutive twelve (12) month period, then Tenant shall have the
right to terminate this Lease on thirty (30) days prior written notice to
Landlord if Landlord has failed to cure same within said thirty (30) days.

        35.3 Definition of Hazardous Materials. For purposes of this Lease, the
term "Hazardous Materials" shall mean, collectively, asbestos, any petroleum
fuel, and any hazardous or toxic substance, material or waste which is or
becomes regulated by any local governmental authority, the State of California
or the United States Government, including, but not limited to, any material or
substance defined as a "hazardous waste," "extremely hazardous waste,"
"restricted hazardous waste," "hazardous substance," "hazardous material" or
"toxic pollutant" under the California Health and Safety Code and/or under the
Comprehensive Environmental Response, Compensation and Liability Act, 42 U.S.C.
9601, et seq.

        35.4 Survival. The foregoing covenants and indemnities of Tenant and
Landlord shall survive the expiration or earlier termination of the Lease.

36. MISCELLANEOUS.

        36.1 Governing Law. This Lease shall be governed by, and construed
pursuant to, the laws of the State of California.

        36.2 Successors and Assigns. Subject to the provisions of Paragraph 31
above, and except as otherwise provided in this Lease, all of the covenants,
conditions and provisions of this Lease shall be binding upon, and shall inure
to the benefit of, the parties hereto and their respective heirs, personal
representatives and permitted successors and assigns; provided, however, no
rights shall inure to the benefit of any Transferee of Tenant unless the
Transfer to such Transferee is made in compliance with the provisions of
Paragraph 16, and no options or other rights which are expressly made personal
to the original Tenant hereunder or in any rider attached hereto shall be
assignable to or exercisable by anyone other than the original Tenant under this
Lease.

        36.3 No Merger. The voluntary or other surrender of this Lease by Tenant
or a mutual termination thereof shall not work as a merger and shall, at the
option of Landlord, either (a) terminate all or any existing subleases, or (b)
operate as an assignment to Landlord of Tenant's interest under any or all such
subleases.

        36.4 Professional Fees. If either Landlord or Tenant should bring suit
against the other with respect to this Lease, including for unlawful detainer or
any other relief against the other hereunder, then all costs and expenses
incurred by the prevailing party therein (including, without limitation, its
actual appraisers', accountants', attorneys' and other professional fees and
court costs) shall be paid by the other party.

        36.5 Waiver. The waiver by either party of any breach by the other party
of any term, covenant or condition herein contained shall not be deemed to be a
waiver of any subsequent breach of the same or any other term, covenant and
condition herein contained, nor shall any custom or practice which may become
established between the parties in the administration of the terms hereof be
deemed a waiver of, or in any way affect, the right of any party to insist upon
the performance by the other in strict accordance with said terms. No waiver of
any default of either party hereunder shall be implied from any acceptance by
Landlord or delivery by Tenant (as the case may be) of any rent or other
payments due hereunder or any omission by the non-defaulting party to take any
action on account of such default if such default persists or is repeated, and
no express waiver shall affect defaults other than as specified in said waiver.
The subsequent acceptance of rent hereunder by Landlord shall not be deemed to
be a waiver of any preceding breach by Tenant of any term, covenant or condition
of this Lease other than the failure of Tenant to pay the particular rent so
accepted, regardless of Landlord's knowledge of such preceding breach at the
time of acceptance of such rent.

         36.6 Joint and Several Liability. If more than one person or entity
executes this Lease as Tenant: (a) each of them is and shall be jointly and
severally liable for the covenants,

                                       31
<PAGE>   35

conditions, provisions and agreements of this Lease to be kept, observed and
performed by Tenant; and (b) the act or signature of, or notice from or to, any
one or more of them with respect to this Lease shall be binding upon each and
all of the persons and entities executing this Lease as Tenant with the same
force and effect as if each and all of them had so acted or signed, or given or
received such notice.

        36.7 Terms and Headings. The words "Landlord" and "Tenant" as used
herein shall include the plural as well as the singular. Words used in any
gender include other genders. The paragraph headings of this Lease are not a
part of this Lease and shall have no effect upon the construction or
interpretation of any part hereof.

        36.8 Time. Time is of the essence with respect to performance of every
provision of this Lease in which time or performance is a factor. All references
in this Lease to "days" shall mean calendar days unless specifically modified
herein to be "business" days.

        36.9 Prior Agreements; Amendments. This Lease (and the Exhibits and
Riders attached hereto) contain all of the covenants, provisions, agreements,
conditions and understandings between Landlord and Tenant concerning the
Premises and any other matter covered or mentioned in this Lease, and no prior
agreement or understanding, oral or written, express or implied, pertaining to
the Premises or any such other matter shall be effective for any purpose. No
provision of this Lease may be amended or added to except by an agreement in
writing signed by the parties hereto or their respective successors in interest.
The parties acknowledge that all prior agreements, representations and
negotiations are deemed superseded by the execution of this Lease to the extent
they are not expressly incorporated herein.

        36.10 Separability. The invalidity or unenforceability of any provision
of this Lease (except for Tenant's obligation to pay Annual Basic Rent and
Excess Expenses under Paragraphs 5 and 6 hereof) shall in no way affect, impair
or invalidate any other provision hereof, and such other provisions shall remain
valid and in full force and effect to the fullest extent permitted by law.

        36.11 Exhibits and Riders. All Exhibits and Riders attached to this
Lease are hereby incorporated in this Lease as though set forth at length
herein.

        36.12 Signs and Auctions. Except for Tenant's top of building signage
facing Towne Centre Drive and Tenant's Eyebrow sign facing the 241 Corridor, on
the building, as approved by Landlord, building directory signage in the main
building lobby and identity sign on the entry doors of the Premises, Tenant
shall have no right to place any sign upon the Premises, the Building, Site or
Project or which can be seen from outside the Premises. In addition, Tenant
shall have no right to conduct any auction in, on or about the Premises, the
Building or Site. In addition, should Landlord provide a tenant monument sign
for the building or project, Tenant shall have the right to identification on
said monument sign.

        36.13 Accord and Satisfaction. No payment by Tenant or receipt by
Landlord of a lesser amount than the rent payment herein stipulated shall be
deemed to be other than on account of the rent, nor shall any endorsement or
statement on any check or any letter accompanying any check or payment as rent
be deemed an accord and satisfaction, and Landlord may accept such check or
payment without prejudice to Landlord's right to recover the balance of such
rent or pursue any other remedy provided in this Lease. Tenant agrees that each
of the foregoing covenants and agreements shall be applicable to any covenant or
agreement either expressly contained in this Lease or imposed by any statute or
at common law.

        36.14 Financial Statements. Upon ten (10) days prior written request
from Landlord (which Landlord may make at any time during the Term but no more
often than one (1) time in any calendar year), Tenant shall deliver to Landlord
(a) a current annual report, or if not applicable, financial statement of
Tenant, and (b) annual reports, or if not applicable, financial statements of
Tenant for the two (2) years prior to the current financial statement year. Such
annual report or statements shall be prepared in accordance with generally
accepted accounting principles and certified as true in all material respects by
Tenant (if Tenant is an individual) or by an authorized officer or general
partner of Tenant (if Tenant is a corporation or partnership, respectively).

        36.15 Tenant's Authority. If Tenant executes this Lease as a
partnership, limited liability company or corporation, then Tenant and the
persons and/or entities executing this Lease

                                       32
<PAGE>   36

on behalf of Tenant represent and warrant that: (a) Tenant is a duly authorized
and existing partnership, limited liability company or corporation, as the case
may be, and is qualified to do business in the state in which the Building is
located; (b) such persons and/or entities executing this Lease are duly
authorized to execute and deliver this Lease on Tenant's behalf in accordance
with the Tenant's partnership agreement (if Tenant is a partnership), operating
agreement (if Tenant is a limited liability company) or a duly adopted
resolution of Tenant's board of directors and the Tenant's by-laws (if Tenant is
a corporation); and (c) this Lease is binding upon Tenant in accordance with its
terms.

        36.16 Landlord's Lien Waiver. If Tenant desires to purchase subject to a
security interest, lease or obtain a loan secured by Tenant's personal property
in the Premises and requests that Landlord execute a lien waiver in connection
therewith waiving Landlord's lien rights to such personal property, Landlord
agrees to execute such a lien waiver on Landlord's standard form.
Notwithstanding the foregoing, however, if Landlord incurs processing costs
(including attorneys' fees) in connection with such reasonable request which
exceed $300.00, then Tenant shall reimburse such excess costs to Landlord within
fifteen (15) days following Tenant's receipt of invoice(s) therefor. Nothing in
this Subparagraph 36.16 shall permit Tenant to encumber its leasehold interest
in the Premises.

        36.17 Confidentiality. ALL DOCUMENTS, TERMS, PROVISIONS, AND CONDITIONS
RELATING TO THIS LEASE, including, without limitation, all details of Basic
Rent, Operating Expenses, and any options (collectively referred to as the
"Agreement Details"), ARE CONFIDENTIAL. Tenant, its agents, employees, invitees
and representatives shall maintain the strictest confidence regarding the
Agreement Details. Under no circumstances shall Tenant, its agents, employees,
invitees or representatives discuss or disclose to any other individual or
entity (or representative of same) any of the Agreement Details. Further, Tenant
shall be solely responsible for and shall indemnify, protect, defend (with
counsel reasonably approved by Landlord) and hold Landlord harmless from and
against any and all claims, judgments, suits, causes of action, damages,
penalties, fines, liabilities, losses and expenses (including, without
limitation, loss of prospective tenants, rents, sales or other business or
profits, attorneys' fees, consultant fees and court costs) which arise during or
after the term of this Lease as a result of the breach of any of the obligations
and covenants set forth in this Subparagraph, and/or any other disclosure by
Tenant, its agents, employees, invitees or representatives of any Agreement
Details. Tenant's indemnification obligations under this Subparagraph shall
survive the expiration or earlier termination of this Lease. This Subparagraph
shall not be deemed to prohibit disclosure to the extent that the disclosure is
required by law.

        36.18 Waiver of Jury Trial. Landlord and Tenant each acknowledge that it
is aware of and has had the advice of counsel of its choice with respect to its
right to trial by jury, and each party does hereby expressly and knowingly waive
and release all such rights to trial by jury in any action, proceeding or
counterclaim brought by either party hereto against the other (and/or against
its officers, directors, employees, agents, or subsidiary or affiliated
entities) on any matters whatsoever arising out of or in any way connected with
this lease, tenant's use or occupancy of the premises, and/or any claim of
injury or damage.

        36.19 Reasonableness. Whenever the Lease grants Landlord or Tenant the
right to take action, exercise discretion, establish rules and regulations or
make allocations or other determinations, Landlord and Tenant shall act
reasonably and in good faith and take no action which might result in the
frustration of the reasonable expectations of a sophisticated landlord and
sophisticated tenant concerning the benefits to be enjoyed under the Lease.

        IN WITNESS WHEREOF, the parties have executed this Lease as of the day
and year first above written.

"LANDLORD"                          FOOTHILL-OPERON I, LLC, a California limited
                                    liability company

                                    By:
                                       -----------------------------------------

                                    Its:
                                        ----------------------------------------

                                       33
<PAGE>   37

                                    By:
                                       -----------------------------------------

                                    Its:
                                        ----------------------------------------

"TENANT"                            ECLIPSE SURGICAL TECHNOLOGIES,
                                    a California corporation

                                    By:
                                       -----------------------------------------

                                    Its:
                                        ----------------------------------------

                                    By:
                                       -----------------------------------------

                                    Its:
                                        ----------------------------------------

                                       34
<PAGE>   38

                                   EXHIBIT "A"

                                    SITE PLAN

                                      A-1
<PAGE>   39

                                  EXHIBIT "A-2"

                                 PARKING SPACES

                                      A-2
<PAGE>   40

                                   EXHIBIT "B"

                                   FLOOR PLANS

                                      B-1
<PAGE>   41

                                   EXHIBIT "C"

                   RENTABLE SQUARE FEET AND USABLE SQUARE FEET

                1. The term "Rentable Square Feet" as used in the Lease shall be
deemed to include with respect to the Premises: (a) the total rentable area of
the Premises determined by Landlord's architect, including (i) for single
tenancy floors, all the area covered by the elevator lobbies, corridors,
restrooms, elevator rooms, mechanical rooms, electrical rooms, telephone closets
and janitorial closets on such floors, or (ii) for multiple tenancy floors, a
pro-rata portion of all of the area covered by the elevator lobbies, corridors,
restrooms, elevator rooms, mechanical rooms, electrical rooms, telephone closets
and janitorial closets on such floor; plus (b) a pro rata portion of (i) the
lobby area on the ground floor of the Building and (ii) the area of the
emergency equipment, fire pump equipment, electrical switching gear, elevator
rooms, mechanical rooms, electrical rooms, janitorial closets, telephone
equipment and mail delivery facilities serving the Building which are not
located on any tenant floor. The term "Rentable Square Feet" with respect to the
Building shall mean the total rentable area for all floors in the Building
computed in accordance with the provisions of Subparagraph 1(a) above, including
the entire lobby and other areas described in Subparagraph 1(b) above. The term
"Rentable Square Feet" with respect to the Project shall mean the total rentable
area for all floors in the Building and the other buildings in the Project,
computed in accordance with the provisions of Subparagraph 1(a) above, including
the entire lobby and other areas within such buildings as described in
Subparagraph 1(b) above.

                2. The term "Usable Square Feet" as used in this Lease with
respect to the Premises shall be deemed to include the total usable area of the
Premises as determined by Landlord's architect.

                3. For purposes of establishing the initial Tenant's Percentage,
Landlord's Contribution to Operating Expenses, Annual Basic Rent and Monthly
Basic Rent as shown in Paragraph 1 of the Lease, the amounts of the Allowance,
and the number of parking spaces allocated to Tenant as provided in Subparagraph
1.21, the number of Usable Square Feet and Rentable Square Feet of the Premises
have been determined to be as set forth in Subparagraph 1.7 of the Lease, and
the number of Rentable Square Feet of the Building shall be determined as set
forth below. Landlord's architect shall determine the actual number of Usable
and Rentable Square Feet of the Premises, and the Building, based upon the
criteria set forth in Paragraph 1 above, and shall provide written confirmation
of such numbers to Tenant within thirty (30) days after delivery of final
Working Drawings ready for submission to the City/County Building Department.
Tenant may, if it so desires, and at its sole cost and expense, cause the
Premises or the Building to be remeasured in order to confirm or challenge the
number of Usable and/or Rentable Square Feet calculated by Landlord's architect.
Tenant shall cause any such remeasurement to be performed no later than thirty
(30) days following the Commencement Date. If Tenant fails to notify Landlord of
the result of Tenant's remeasurement prior to the end of such thirty (30) day
period, the determination of Landlord's architect shall be conclusive. If the
determination of Landlord's architect and Tenant's remeasurement conflict, and
Landlord and Tenant are unable to promptly resolve such conflict, the conflict
shall be resolved in accordance with the dispute resolution procedure set forth
in Subparagraph 25.6 of the Lease. Upon determination of the Usable and Rentable
Square Footage of the Building and the Premises as provided herein, Tenant's
Percentage, Landlord's Contribution to Operating Expenses, Annual Basic Rent and
Monthly Basic Rent, the Allowance, the number of parking spaces and all other
items allocated, charged or computed on a per square foot basis pursuant to the
terms of the Lease shall be adjusted accordingly.

                                      C-1
<PAGE>   42

                                   EXHIBIT "D"

                              WORK LETTER AGREEMENT

                This Work Letter Agreement supplements the Office Lease (the
"Lease"), dated and executed concurrently herewith, by and between Landlord and
Tenant, covering certain premises described in the Lease (the "Premises"). All
terms not defined herein shall have the same meaning as set forth in the Lease.

                1. Construction of Building Shell.

                        1.1 Building Shell. Landlord has constructed through its
contractor, a parking facility (surface parking) and building shell.

                        1.2 Construction Representatives. Landlord hereby
appoints the following person(s) as Landlord's representative ("Landlord's
Representative") to act for Landlord in all matters covered by this Exhibit "D":
Bob Searles. Tenant hereby appoints the following person as Tenant's
representative ("Tenant's Representative") to act for Tenant in all matters
covered by this Exhibit "D": Michael Quinn or Darrell Eckstein. All
communications with respect to the matters covered by this Exhibit "D" shall be
made to Landlord's Representative or Tenant's Representative, as the case may
be. Either party may change its representative under this Exhibit "D" at any
time by written notice to the other party.

                2. Construction Plans for Premises. All plans and drawings
required by this Paragraph 2 shall be prepared in accordance as provided below.

                        2.1 Preparation of Space Plans. Landlord's architect
(the "Architect") shall prepare preliminary space plans for the Premises. The
Architect, in consultation with Landlord's engineers, shall prepare detailed
space plans sufficient to convey the architectural design of the Premises and
layout of the Leasehold Improvements therein ("Space Plans"). The Space Plans
shall be submitted to Tenant for Tenant's reasonable approval. If Tenant shall
disapprove of any portion of the Space Plans, Tenant shall advise Landlord in
writing of such disapproval and the reasons therefor. Failure of Tenant to give
Landlord written notice of disapproval within ten (10) business days after
submission to Tenant shall be deemed approval. If Tenant timely disapproves any
portion of the Space Plans, Landlord shall submit to Tenant for Tenant's
reasonable approval (to be given in the same period provided above), a redesign
of the Space Plans ("Redesign"), incorporating those revisions required by
Tenant. If Tenant timely disapproves the Redesign, Landlord shall either (a)
submit to Tenant for Tenant's reasonable approval another redesign of the Space
Plans (to be given in the same period provided above), incorporating those
revisions required of Tenant or (b) terminate this Lease by written notice to
Tenant.

                        2.2 Preparation of Final Plans. Based on the approved
Space Plans, Landlord shall cause the Architect, in consultation with Landlord's
engineers, to prepare complete architectural plans, drawings and specifications
and complete engineering, mechanical, structural and electrical working drawings
for all of the Leasehold Improvements for the Premises to be constructed by
Landlord (collectively, the "Final Plans"). The Final Plans shall be approved in
the same manner as provided in Paragraph 2.1 above for approval of Space Plans,
but shall not be disapproved to the extent consistent with the Space Plans.

                3. Allowance for Leasehold Improvements.

                        Allowance. Tenant shall receive from Landlord an
allowance (the "Allowance") of $ 29.15 per rentable square foot within the
Premises, which Allowance shall be used to contribute toward payment of the Work
Cost (as defined below) of the Leasehold Improvements. All items of Leasehold
Improvements, whether or not the cost thereof is covered by the Allowance, shall
become the property of Landlord upon expiration or earlier termination of the
Lease and shall remain on the Premises at all times during the Term of this
Lease, except as otherwise provided in Subparagraph 14.2 of the Lease. If the
Work Cost exceeds the Allowance, Tenant shall pay to Landlord such excess within
fifteen (15) days after invoice therefor (which invoice may be given prior to
installation of the Leasehold Improvements). Tenant shall not be entitled to any
credit or refund of any other unused portion of the Allowance.

                                      D-1
<PAGE>   43

                        3.2 Work Cost Estimate and Statement. Prior to the
commencement of any of the Leasehold Improvements shown on the Final Plans,
Landlord shall submit to Tenant a written estimate of Work Cost of the Leasehold
Improvements, which written estimate shall be based on the Final Plans. Tenant
shall either approve the estimate or disapprove specific items and submit to
Landlord revisions of Final Plans to reflect the deletion of and/or substitution
for such disapproved items. Failure of Tenant to disapprove any specific items
within five (5) business days of the submission of such estimate (as the same
may be revised) shall be deemed approval thereof. Upon Tenant's approval of said
estimate, such approved estimate to be hereinafter known as the "Work Cost
Statement," Landlord shall have the right to purchase materials and to commence
the construction of the items included in said Work Cost Statement pursuant to
Paragraph 4 hereof. In the event the total costs reflected in the Work Cost
Statement exceed the Allowance, Tenant shall pay such excess, as additional
rent, within fifteen (15) days after Tenant receives an invoice from Landlord
(which invoice may be given prior to installation of the Leasehold
Improvements). Any differences between the estimated Work Cost in the Work Cost
Statement and the actual Work Cost shall be determined by Landlord and
appropriate adjustments and payments by Landlord or Tenant, as the case may be,
shall be made within fifteen (15) days thereafter.

                        3.3 No Obligation of Landlord. Until Tenant approves the
estimate, Landlord shall be under no obligation to perform the installation of
any of the Leasehold Improvements. If Tenant does not approve or disapprove the
estimate within five (5) business days after the initial submission of the
estimate to Tenant, then Landlord may terminate this Lease by written notice to
Tenant.

                4. Construction of Leasehold Improvements. The Leasehold
Improvements' work shall be performed by a general contractor ("Contractor")
(Fullmer Construction or DBAC) selected by Landlord and Tenant. Landlord and
Tenant shall, after adjustments for the inconsistent assumptions to reflect an
"apples to apples" comparison, select the lowest priced bid. Following Tenant's
approval of the estimate described in Subparagraph 3.2 above, the Contractor
shall commence and diligently proceed with the construction of the Leasehold
Improvements, subject to Tenant Delays (as described in Paragraph 8) and any
other delays beyond the reasonable control of Landlord or the Contractor
(including, without limitation, any fire, earthquake, inclement weather or other
acts of God, shortages in material or labor, strikes and delays in obtaining
governmental permits and approvals). Promptly upon the commencement of the
Leasehold Improvements work, Landlord shall furnish Tenant with a construction
schedule setting forth the projected completion dates therefor and showing the
deadlines for any actions required to be taken by Tenant during such
construction, and Landlord may from time to time during construction of the
Leasehold Improvements modify or amend such schedule. Landlord shall make a
reasonable effort to meet such schedule, as the same may be modified or amended;
provided, however, Landlord shall have no liability to Tenant for damages or
losses, and Tenant shall have no right to terminate or cancel this Lease, as a
result of any failure or delay in meeting such schedule or substantially
completing the Leasehold Improvements except as provided in the Outside
Commencement Date Rider. Any approved changes to the Final Plans shall initiate
a new written estimate of Work Cost which shall be approved by Tenant pursuant
to the provisions of Paragraph 3.2 above. Landlord shall permit Tenant and its
agents or contractors to enter the Premises three (3) weeks prior to substantial
completion, to perform such work as installing furniture systems, trade
fixtures, telephone systems and business equipment. The foregoing license to
enter the Premises prior to substantial completion shall be conditioned upon
Tenant and its agents and/or contractors working in harmony and not interfering
with the work being performed by Contractor, or interfering with the permitting
of the Leasehold Improvements' work, and shall otherwise be subject to the
insurance and indemnity provisions of the Lease. Tenant agrees its agents and/or
contractor shall be required to coordinate their schedule with the Contractor to
ensure work is not interrupted.

                Subject to Landlord's approval, which shall not be unreasonably
withheld, Tenant shall have the right to install a roof-mounted, non-penetrating
satellite dish antenna, and/or other equipment installed and maintained by
contractor selected by Landlord and Tenant.

                5. Work Cost. "Work Cost" means: (a) all design and engineering
fees incurred in connection with the preparation of the Space Plans and Final
Plans (including the cost of the Architect, Landlord's consulting engineers and
other consultants); (b) costs of permits, fees and taxes; (c) testing and
inspecting costs; (d) the actual costs and charges for material and labor,
contractor's profit and contractor's general overhead incurred by Landlord in
having the

                                      D-2
<PAGE>   44

Leasehold Improvements done; and (e) all other costs expended or to be expended
by Landlord in the construction of the Leasehold Improvements.

                6. Elevators. Landlord shall, consistent with its obligation to
other tenants then in occupancy in the Building, make the elevators reasonably
available to Tenant in connection with initial decorating, furnishing and moving
into the Premises.

                7. Commencement Date and Substantial Completion.

                        7.1 Commencement Date. The Commencement Date shall be
the date which is the earlier of:

                        (a) September 15, 2001 or

                        (b) the date Tenant commences operation of its business
in all or any portion of the Premises.

                        7.2 Substantial Completion; Punch-List. For purposes of
Subparagraph 7.1(b)above, the Leasehold Improvements shall be deemed to be
"substantially completed" when Landlord's contractor certifies in writing to
Landlord and Tenant that Landlord has: (a) provided to Tenant reasonable access
to the Premises; (b) substantially performed all of the Leasehold Improvements
work required to be performed by Landlord under this Work Letter Agreement,
other than decoration and minor "punch-list" type items and adjustments which do
not materially interfere with Tenant's access to or use of the Premises; (c) all
building systems are in good working order; and (d) obtained a temporary
certificate of occupancy or other required, equivalent approval from the local
governmental authority permitting occupancy of the Premises. Within ten (10)
days after receipt of such certificate from Contractor, Tenant shall conduct a
walk-through inspection of the Premises with Landlord and Contractor and provide
to Landlord a written punch-list specifying those decoration and other
punch-list items which require repair and/or completion, which items Landlord
shall thereafter diligently complete within ten (10) business days of Landlord's
receipt of the punch-list or as soon thereafter as commercially feasible.

                8. Tenant Delays. For purposes of this Work Letter Agreement,
"Tenant Delays" shall mean any delay in substantial completion of the Leasehold
Improvements resulting from any or all of the following:

                        (a) Tenant's failure to timely perform any of its
obligations pursuant to this Work Letter Agreement, including any failure to
complete on or before the due date therefor any action item which is Tenant's
responsibility pursuant to any schedule delivered by Landlord to Tenant pursuant
to this Work Letter Agreement;

                        (b) Tenant's changes to Space Plans or Final Plans after
approval thereof;

                        (c) Tenant's request for materials, finishes, or
installations other than the Standards set forth on Schedule "1";

                        (d) any delay of Tenant in making payment to Landlord
for Tenant's share of Work Cost; or

                        (e) any other act or failure to act by Tenant, Tenant's
employees, agents, architects, independent contractors, consultants and/or any
other person performing or required to perform services on behalf of Tenant.

                        Landlord's Failure to Deliver Premises. Notwithstanding
anything to the contrary set forth herein, Tenant's obligation to pay Rent shall
not commence until delivery of the Premises to Tenant, provided that Landlord's
inability to deliver the Premises to Tenant on or prior to the Commencement Date
is not attributable to the acts or omissions of Tenant.

                                      D-3
<PAGE>   45

"LANDLORD"                          FOOTHILL-OPERON I, LLC, a California limited
                                    liability company

                                    By:
                                       -----------------------------------------

                                    Its:
                                        ----------------------------------------

                                    By:
                                       -----------------------------------------

                                    Its:
                                        ----------------------------------------

"TENANT"                            ECLIPSE SURGICAL TECHNOLOGIES,
                                    a California corporation

                                    By:
                                       -----------------------------------------

                                    Its:
                                        ----------------------------------------

                                    By:
                                       -----------------------------------------

                                    Its:
                                        ----------------------------------------

                                      D-4
<PAGE>   46

                           SCHEDULE "1" to EXHIBIT "D"

                         BUILDING STANDARD IMPROVEMENTS

1.      Wood Doors:

        A.      3' x 8' stain grade plain sliced white oak, mahogany finish

2.      Door Frames:

        A.      Non-rated & 20 minute rated: Aluminum frame with black anodized
                finish by Western Integrated.

        B.      Over 20 minute rated: Hollow metal frames, painted to match
                aluminum.

3.      Door Hardware:

        A.      Polished chrome finish, Schlage mortise L series.

4.      Acoustical Ceiling:

        A.      Grid: 2 x 2, 1" white.

        B.      Tile: Armstrong 2 x 2, # 704 Tegular

5.      Flooring:

        A.      Carpet: Monterey textured loop pile glue down "Park Avenue" or
                match grade.

        B.      Vinyl Composition Tile: 12" x 12" Armstrong, Imperial texture.

        C.      Vinyl Base: 4" vinyl top set base by Burke or equal.

6.      Ceramic Tile:

        A.      Restrooms: 6" x 6" Crossville with cross plus finish or match
                grade for floors and walls. Walls to be full height.

        B.      Floors: Intertile 12" x 12" stone, or match grade.

7.      Painting:

        A.      Offices and general rooms: Eggshell finish on all walls and
                ceilings.

8.      Wall Covering:

        A.      Vescom America" -- Benina 1, #5506-1 type 1, 14 oz/lin yd. or
                match grade.

9.      Windows:

        A.      Frames:

                1.      Non-rated & 20 minute rated: Aluminum, by Western
                        Integrated or equal. Black anodized finish.

                2.      Over 20 minute rated: Hollow metal, painted to match
                        black anodized finish.

        B.      Glass:

                1.      Non-rated: Clear glass, center glazed.

                2.      Rated: Clear wire glass, center glazed

        C.      Window Covering:

                                    Exhibit D
                               Schedule 1, Page 1
<PAGE>   47

                1.      Newport Shading NF 180 White Vertical Blinds

10.     Lighting:

        A.      Office and Open area Office: 2 x 4 parabolic fixtures.

        B.      Conference & Meeting Rooms: Down lighting.

11.     Fire Sprinklers:

        A.      Heads: to be semi-recessed, chrome. Concealed heads to have
                white covers.

                                    Exhibit D
                               Schedule 1, Page 2
<PAGE>   48

                             ANNUAL BASIC RENT RIDER

                           RIDER NO. 1 TO OFFICE LEASE

              This Rider No. 1 is made and entered into by and between Eclipse
Surgical Technologies, a California corporation ("Tenant"), and FOOTHILL-OPERON
I, LLC, a California limited liability company ("Landlord"), as of the day and
year of the Lease between Landlord and Tenant to which this Rider is attached.
Landlord and Tenant hereby agree that, notwithstanding anything contained in the
Lease to the contrary, the provisions set forth below shall be deemed to be part
of the Lease and shall supersede any inconsistent provisions of the Lease. All
references in the Lease and in this Rider to the "Lease" shall be construed to
mean the Lease (and all exhibits attached thereto), as amended and supplemented
by this Rider. All capitalized terms not defined in this Rider shall have the
same meaning as set forth in the Lease.

              Subject to any adjustment of the Rentable Square Feet of the
Premises pursuant to Exhibit "C," the Annual Basic Rent and Monthly Basic Rent
as of the Commencement Date and as set forth in Paragraph 1 of the Lease shall
be in accordance with the following schedule:

<TABLE>
<CAPTION>
         Months During Term in                                                       Monthly Basic
   Which Increase Shall be Effective         Annual Basic Rent/RSF                      Rent/RSF
   ---------------------------------         ---------------------                      --------
<S>                                      <C>                                  <C>
         Months 01 through 60            $27.90 per full service gross        $2.325 per full service gross
                                          within the Premises per year        within the Premises per month
</TABLE>

                                       1
<PAGE>   49

                         OUTSIDE COMMENCEMENT DATE RIDER

                           RIDER NO. 2 TO OFFICE LEASE

              This Rider No. 2 is made and entered into by and between Eclipse
Surgical Technologies, a California corporation ("Tenant"), and FOOTHILL OPERON
I, LLC, a California limited liability company ("Landlord"), as of the day and
year of the Lease between Landlord and Tenant to which this Rider is attached.
Landlord and Tenant hereby agree that, notwithstanding anything contained in the
Lease to the contrary, the provisions set forth below shall be deemed to be part
of the Lease and shall supersede any inconsistent provisions of the Lease. All
references in the Lease and in this Rider to the "Lease" shall be construed to
mean the Lease (and all exhibits attached thereto), as amended and supplemented
by this Rider. All capitalized terms not defined in this Rider shall have the
same meaning as set forth in the Lease.

              1. Notwithstanding the provisions of Subparagraph 4.2 of the Lease
to the contrary, in the event that the Occupancy Date has not occurred by August
1, 2001, (the "Outside Date") as a result of Landlord's failure to substantially
complete the Leasehold Improvements by such date, which Outside Date shall be
extended day for day by the number of days of Tenant Delays (as such term is
defined in Exhibit "D" to the Lease) and by up to sixty (60) days of Force
Majeure Delays (as defined below), then Tenant shall have the right to deliver a
notice to Landlord (the "Termination Notice") electing to terminate the Lease
effective as of the date of Landlord's receipt of such Termination Notice (the
"Effective Date"). Except as provided hereinbelow, the Termination Notice must
be delivered by Tenant to Landlord, if at all, not earlier than the Outside Date
and not later than ten (10) business days after the Outside Date. If Tenant
timely delivers the Termination Notice to Landlord, then Landlord shall have the
right to suspend the Effective Date for a period of thirty (30) days after the
Effective Date. In order to suspend the Effective Date, Landlord must deliver to
Tenant, within ten (10) days after receipt of the Termination Notice, a written
statement of Landlord's contractor in charge of construction certifying that in
such contractor's good faith judgment the Leasehold Improvements will be
substantially completed within fifteen (15) days after the Effective Date. If
the Leasehold Improvements are substantially completed or the Commencement Date
otherwise occurs within said fifteen (15) day suspension period, then the
Termination Notice shall be of no further force or effect.

              2. If, prior to the Outside Date (as so extended by Tenant Delays
and Force Majeure Delays), Landlord determines that the Commencement Date will
not occur by such Outside Date as a result of Landlord's failure to
substantially complete the Leasehold Improvements thereby, Landlord shall have
the option to deliver a written notice to Tenant stating Landlord's opinion as
to the date by which the Leasehold Improvements may be substantially completed
and Tenant shall be required, within ten (10) business days after receipt of
such notice, to either deliver the Termination Notice (which will mean that the
Lease shall thereupon terminate and shall be of no further force and effect) or
agree to extend the Outside Date to that date which is set by Landlord. If the
Outside Date is so extended, Landlord's right to request Tenant to elect to
either terminate or further extend the Outside Date shall remain and shall
continue to remain, with each of the notice periods and response periods set
forth above, until the Leasehold Improvements are substantially completed or the
Lease is terminated, as applicable.

              3. Subject to the limitations specified herein above, the
Effective Date and Outside Date above shall be extended day for day to the
extent of any Tenant Delays and "Force Majeure Delays." "Force Majeure Delays"
shall mean and refer to a period of delay or delays encountered by Landlord
affecting the work of construction of the Leasehold Improvements because of
delays due to: excess time in obtaining governmental permits or approvals beyond
the time period normally required to obtain such permits or approvals for
similar space, similarly improved in similar office buildings in the area of the
Building; fire, earthquake, inclement weather or other acts of God; acts of the
public enemy; riot; insurrection; governmental regulation of the sales of
materials or supplies or the transportation thereof; strikes or boycotts;
shortages of material or labor; or any other cause beyond the reasonable control
of Landlord.

<PAGE>   50

                                                                     EXHIBIT "E"

                    SAMPLE FORM OF NOTICE OF LEASE TERM DATES

To:    ___________________________________________ Date: __________________

Re:    Office Lease dated ____________________, 20____ between
       ___________________ Tenant, and FOOTHILL-OPERON I, Landlord concerning
       Suite ___________________ ("Premises") located at 26632 Towne Centre
       Drive, Foothill Ranch, California, 92610.

Gentlemen:

              In accordance with the above-referenced Lease, we wish to advise
and/or confirm as follows:

              1. That the Premises have been accepted by Tenant as being
substantially complete in accordance with the Lease, and that there is no
deficiency in construction.

              2. That Tenant has accepted and is in possession of the Premises,
and acknowledges that under the provisions of the Lease, the Term of the Lease
is for _____ years, with ______________________________, and commenced upon the
Commencement Date of _____________________, 20______ and is currently scheduled
to expire on _____________________, subject to earlier termination as provided
in the Lease.

                  3. That in accordance with the Lease, rental payment has
commenced (or shall commence) on ________________________.

              4. If the Commencement Date of the Lease is other than the first
day of the month, the first billing will contain a pro rata adjustment and the
billing thereafter, with the exception of the final billing, shall be for the
full amount of the monthly installment as provided for in the Lease.

                  5. Rent is due and payable in advance on the first day of each
and every month during the Term of the Lease. Your rent checks should be made
payable to ____________________________________________ at
______________________________.

              6. The exact number of Rentable Square Feet within the Premises is
_____ square feet. The exact number of Usable Square Feet within the Premises is
_________________ square feet.

              7. Tenant's Proportionate Share as adjusted based upon the exact
number of Rentable Square Feet within the Premises, consists of two (2) separate
percentages: (a) _____which is Tenant's Proportionate Share of the Building; and
(b) _____,which is Tenant's Proportionate Share of the Project.

AGREED AND ACCEPTED

"LANDLORD"                              FOOTHILL-OPERON I, LLC, a California
                                        limited liability company

                                        By:
                                               ---------------------------------

                                        Its:
                                               ---------------------------------

                                        By:
                                               ---------------------------------

                                        Its:
                                               ---------------------------------

                                      E-1
<PAGE>   51

"TENANT"                                ECLIPSE SURGICAL TECHNOLOGIES,
                                        a California corporation

                                        By:
                                               ---------------------------------

                                        Its:
                                               ---------------------------------

                                        By:
                                               ---------------------------------

                                        Its:
                                               ---------------------------------

                         SAMPLE ONLY [NOT FOR EXECUTION]

                                      E-2
<PAGE>   52

                                                                     EXHIBIT "F"

                              RULES AND REGULATIONS

              1. Tenant shall not place anything or allow anything to be placed
near the glass of any window, door, partition or wall which may appear unsightly
from outside the Premises. No awnings or other projection shall be attached to
the outside walls of the Building without the prior written consent of Landlord.
No curtains, blinds, shades or screens shall be attached to or hung in, or used
in connection with, any window or door of the Premises, other than building
standard materials, without the prior written consent of Landlord.

              2. Tenant shall not obstruct any sidewalks, halls, passages,
exits, entrances, elevators or stairways of the Building. The halls, passages,
exits, entrances, elevators and stairways are not for the general public, and
Landlord shall in all cases retain the right to control and prevent access
thereto of all persons whose presence in the judgment of Landlord would be
prejudicial to the safety, character, reputation and interests of the Building
and the Building's tenants; provided, that nothing herein contained shall be
construed to prevent such access to persons with whom any tenant normally deals
in the ordinary course of its business, unless such persons are engaged in
illegal activities. Neither Tenant nor any employee, invitee, agent, licensee or
contractor of Tenant shall go upon or be entitled to use any portion of the roof
of the Building, except as required to install and maintain Tenant's
telecommunications equipment.

              3. No furniture, freight, or equipment of any kind shall be
brought into the Building without prior notice to Landlord and all moving of the
same into or out of the Building shall be done at such time and in such manner
as Landlord shall designate. No furniture, equipment or merchandise shall be
received in the Building or carried up or down in the elevators, except between
such hours and in such elevators as shall be designated by Landlord.

              4. Tenant shall not place a load upon any floor of the Premises
which exceeds the load per square foot which such floor was designed to carry
and which is allowed by law. Landlord shall have the right to prescribe the
weight, size and position of all equipment, materials, furniture or other
property brought into the Building. Heavy objects, if such objects are
considered necessary by Tenant, as determined by Landlord, shall stand on such
platforms as determined by Landlord to be necessary to properly distribute the
weight. Business machines and mechanical equipment which cause noise or
vibration that may be transmitted to the structure of the Building or to any
space therein to such a degree as to be objectionable to Landlord or to any
tenants in the Building, shall be placed and maintained by Tenant, at Tenant's
expense, on vibration eliminators or other devices sufficient to eliminate noise
or vibration. Except as expressly provided in Subparagraph 19.2 of the Lease,
Landlord will not be responsible for loss of, or damage to, any such equipment
or other property from any cause, and all damage done to the Building by
maintaining or moving such equipment or other property shall be repaired at the
expense of Tenant.

              5. Tenant shall not use or keep in the Premises any kerosene,
gasoline or inflammable or combustible fluid or material other than those
limited quantities necessary for the operation or maintenance of office
equipment. Tenant shall not use or permit to be used in the Premises any foul or
noxious gas or substance, or permit or allow the Premises to be occupied or used
in a manner offensive or objectionable to Landlord or other occupants of the
Project by reason of noise, odors or vibrations, nor shall Tenant bring into or
keep in or about the Premises any birds or animals.

              6. Tenant shall not use any method of heating or air-conditioning
other than that supplied by Landlord.

              7. Tenant shall close and lock all doors of its Premises before
Tenant and its employees leave the Premises.

              8. The toilet rooms, toilets, urinals, wash bowls and other
apparatus shall not be used for any purpose other than that for which they were
constructed, and no foreign substances of any kind whatsoever shall be thrown
therein.

                                      F-1
<PAGE>   53

              9. Except as expressly permitted in the Lease, Tenant shall not
mark, drive nails, screw or drill into the partitions, window mullions, woodwork
or plaster, or in any way deface the Premises or any part thereof, except to
install normal wall hangings. Tenant shall repair any damage resulting from
noncompliance under this rule.

              10. Landlord reserves the right to exclude or expel from the
Project and/or the Building any person who, in Landlord's judgment, is
intoxicated or under the influence of liquor or drugs or who is in violation of
any of the Rules and Regulations of the Project or Building.

              11. Tenant shall store all its trash and garbage within its
Premises. Tenant shall not place in any trash box or receptacle any material
which cannot be disposed of in the ordinary and customary manner of trash and
garbage disposal. All garbage and refuse disposal shall be made in accordance
with directions reasonably issued from time to time by Landlord.

              12. Tenant agrees that it shall comply with all fire and security
regulations that may be issued from time to time by Landlord, and Tenant also
shall provide Landlord with the name of a designated responsible employee to
represent Tenant in all matters pertaining to such fire or security regulations.
Tenant shall cooperate fully with Landlord in all matters concerning fire and
other emergency procedures.

              13. Tenant assumes any and all responsibility for protecting its
Premises from theft, robbery and pilferage. Such responsibility shall include
keeping doors locked and other means of entry to the Premises closed.

              14. Landlord may waive any one or more of these Rules and
Regulations for the benefit of Tenant or any other tenant, but no such waiver by
Landlord shall be construed as a waiver of such Rules and Regulations in favor
of Tenant or any other such tenant, nor prevent Landlord from thereafter
enforcing any such Rules and Regulations against any and all of the tenants in
the Building.

              15. These Rules and Regulations are in addition to, and shall not
be construed to in any way modify or amend, in whole or in part, the terms,
covenants, agreements and conditions of any lease of premises in the Project or
Building.

              16. Landlord reserves the right to make such other and reasonable
Rules and Regulations as, in its judgment, may from time to time be needed for
safety, security, care and cleanliness of the Project and/or Building and for
the preservation of good order therein, provided said other Rules and
Regulations do not materially or adversely affect Tenant's use of the Premises
as permitted hereunder. Tenant agrees to abide by all such Rules and Regulations
hereinabove stated and any additional rules and regulations which are adopted.

              17. Tenant shall be responsible for the observance of all of the
foregoing rules by Tenant's employees, agents, clients, customers, invitees or
guests.

                                      F-2
<PAGE>   54

                                                                     EXHIBIT "G"

                   SAMPLE FORM OF TENANT ESTOPPEL CERTIFICATE

              The undersigned ("Tenant") hereby certifies to ___________________
("Landlord"), and __________________________________________________, as
follows:

              1. Attached hereto is a true, correct and complete copy of that
certain Office Lease dated ____________________, 20_____ between Landlord and
Tenant (the "Lease"), which demises Premises which are located at
___________________________. The Lease is now in full force and effect and has
not been amended, modified or supplemented, except as set forth in Paragraph 6
below.

              2. The Term of the Lease commenced on ____________________,
20_____.

              3, The Term of the Lease is currently scheduled to expire on
______________________, 20_____.

              4. Tenant has no option to renew or extend the Term of the Lease.

              5. Tenant has no preferential right to purchase the Premises or
any portion of the Building or Site upon which the Premises are located, and
Tenant has no rights or options to expand into other space in the Building.

              6. The Lease has: (Initial One)

                 ( ) not been amended, modified, supplemented, extended, renewed
or assigned.

                 ( ) been amended, modified, supplemented, extended, renewed or
assigned by the following described agreements, copies of which are attached
hereto: ________________________________________.

              7. Tenant has accepted and is now in possession of the Premises
and has not sublet, assigned or encumbered the Lease, the Premises or any
portion thereof except as follows: ________________________________________.

              8. The current Monthly Basic Rent is $_________________.

              9. Tenant's Proportionate Share consists of two (2) separate
percentages: (a) ___________%, which is Tenant's Proportionate Share of the
Building; and (b) ___________%, which is Tenant's Proportionate Share of the
Project. Tenant's Proportionate Share of Operating Expenses currently payable by
Tenant is $__________________________ per month, which amount is Landlord's
current estimate of Tenant's Percentage of Operating Expenses in excess of:
(Complete One)

                 (1)   $______________ per year for Building Operating Expenses,
and

                           $______________ per year for Project Operating
Expenses (expense stop) or

                 (2)   _______________ the Operating Expenses incurred in the
Base Year.

              10. The amount of security deposit (if any) is $_________. No
other security deposits have been made.

              11. All rental payments payable by Tenant have been paid in full
as of the date hereof. No rent under the Lease has been paid for more than
thirty (30) days in advance of its due date.

              12. All work required to be performed by Landlord under the Lease
has been completed and has been accepted by Tenant, and all tenant improvement
allowances have been paid in full.

                                        3
<PAGE>   55

              13. To the best of Tenant's knowledge, as of the date hereof,
there are no defaults on the part of Landlord or Tenant under the Lease.

              14. Tenant has no defense as to its obligations under the Lease
and claims no set-off or counterclaim against Landlord.

              15. Tenant has no right to any concession (rental or otherwise) or
similar compensation in connection with renting the space it occupies, except as
expressly provided in the Lease.

              16. All insurance required of Tenant under the Lease has been
provided by Tenant and all premiums have been paid.

              17. There has not been filed by or against Tenant a petition in
bankruptcy, voluntary or otherwise, any assignment for the benefit of creditors,
any petition seeking reorganization or arrangement under the bankruptcy laws of
the United States or any state thereof, or any other action brought pursuant to
such bankruptcy laws with respect to Tenant.

              18. Tenant pays rent due Landlord under the Lease to Landlord and
does not have any knowledge of any other person who has any right to such rents
by collateral assignment or otherwise.

              The foregoing certification is made with the knowledge that
_____________ is about to [fund a loan to Landlord or purchase the Building from
Landlord], and that _________________________________________ is relying upon
the representations herein made in [funding such loan or purchasing the
Building].

Dated: _____________, _________

"TENANT"                                _______________________________________,

                                        By:
                                             -----------------------------------

                                        Print Name:
                                                     ---------------------------

                                        Its:
                                              ----------------------------------

                                        4
<PAGE>   56

                                                                     EXHIBIT "H"

                          PARKING RULES AND REGULATIONS

              In addition to the parking provisions contained in the Lease to
which this Exhibit "H" is attached, the following rules and regulations shall
apply with respect to the use of the Project's parking facilities.

              1. Every parker is required to park and lock his/her own vehicle.
Subject to Landlord's indemnity in Subparagraph 19.2 of the Lease, all
responsibility for damage to or loss of vehicles is assumed by the parker and
Landlord shall not be responsible for any such damage or loss by water, fire,
defective brakes, the act or omissions of others, theft, or for any other cause.

              2. Tenant shall not park any vehicles in the parking areas other
than automobiles, motorcycles, motor driven or non-motor driven bicycles or four
wheeled trucks/vans.

              3. Parking stickers or any other device or form of identification
supplied by Landlord as a condition of use of the parking facilities shall
remain the property of Landlord. Such parking identification device must be
displayed as requested and may not be mutilated in any manner. The serial number
of the parking identification device may not be obliterated. Devices are not
transferable and any device in the possession of an unauthorized holder will be
void.

              4. Vehicles must be parked entirely within painted stall lines of
a single parking stall.

              5. All directional signs and arrows must be observed.

              6. Parking is prohibited:

                     (a) in areas not striped for parking;

                     (b) in aisles;

                     (c) where "no parking" signs are posted;

                     (d) on ramps;

                     (e) in cross-hatched areas; and

                     (f) in reserved spaces and in such other areas as may be
designated by Landlord or Landlord's parking operator.

              7. Washing, waxing, cleaning or servicing of any vehicle in any
area not specifically reserved for such purpose is prohibited.

              8. Tenant's continued right to park in the parking facilities is
conditioned upon Tenant abiding by these rules and regulations and those
contained in the Lease. Further, if the Lease terminates for any reason
whatsoever, Tenant's right to park in the parking facilities shall terminate
concurrently therewith.

              9. Landlord reserves the right to refuse the use of monthly
stickers or other parking identification devices to any tenant or person who
willfully refuses to comply with these rules and regulations and all city, state
or federal ordinances, laws or agreements.

              10. Landlord reserves the right to modify and/or adopt such other
reasonable and non-discriminatory rules and regulations for the parking
facilities as it deems necessary for the operation of the parking facilities.
Landlord may refuse to permit any person who violates these rules to park in the
parking facilities, and any violation of the rules shall subject the vehicle to
removal, at such vehicle owner's expense.

                                      H-1
<PAGE>   57

                                                                     EXHIBIT "I"

                                    WARRANTS

THIS WARRANT AND THE SHARES OF COMMON STOCK ISSUABLE UPON EXERCISE OF THIS
WARRANT HAVE NOT BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933, AS AMENDED
AND MAY NOT BE OFFERED, SOLD OR OTHERWISE TRANSFERRED, PLEDGED OR HYPOTHECATED
UNLESS AND UNTIL SUCH WARRANT AND/OR SHARES OF COMMON STOCK ARE REGISTERED WITH
THE SECURITIES EXCHANGE COMMISSION OR AN OPINION OF COUNSEL SATISFACTORY TO THE
COMPANY IS OBTAINED TO THE EFFECT THAT SUCH REGISTRATION IS NOT REQUIRED. THIS
WARRANT AND THE SHARES OF COMMON STOCK ISSUABLE UPON EXERCISE OF THIS WARRANT
ARE SUBJECT TO THE RESTRICTIONS ON TRANSFER SET FORTH IN SECTION 4 AND 10 OF
THIS WARRANT.

Warrant No. 05 07 2001                         Number of Shares: 75,000
                                                         (subject to adjustment)
Date of Issuance: May 7, 2001

                      ECLIPSE SURGICAL TECHNOLOGIES, INC.
                         Common Stock Purchase Warrant
                            (Void after May 7, 2006)

              Eclipse Surgical Technologies, Inc., a California corporation (the
"Company"), for value received, hereby certifies that Foothill Operon I, LLC or
its registered assigns (the "Registered Holder"), is entitled, subject to the
terms and conditions set forth below, to purchase from the Company, at any time
or from time to time on or after the date of issuance and on or before 5:00 p.m.
(Eastern time) on May 7, 2006, Seventy Five Thousand (75,000) shares of common
stock, of the Company (the "Common Stock"), at a purchase price of $1.63 per
share. The shares purchasable upon exercise of this Warrant, and the purchase
price per share, each as adjusted from time to time pursuant to the provisions
of this Warrant, are hereinafter referred to as the "Warrant Shares" and the
"Purchase Price," respectively.

              This Warrant is issued pursuant to the terms and conditions of a
Lease between Eclipse Surgical Technologies, Inc. as tenant and Foothill Operon
I, LLC as landlord dated May 7, 2001 between the Company and the Registered
Holder (the "Lease").

1.     Exercise.

       (a) Manner of Exercise. This Warrant may be exercised by the Registered
Holder, in whole or in part, by surrendering this Warrant, with the purchase
form appended hereto as Exhibit I duly executed by the Registered Holder or by
the Registered Holder's duly authorized attorney, at the principal office of the
Company, or at such other office or agency as the Company may designate,
accompanied by payment in full, in lawful money of the United States, of the
Purchase Price payable in respect of the number of Warrant Shares purchased upon
such exercise. The Purchase Price may be paid by cash, check, wire transfer, by
the surrender of promissory notes or other instruments representing indebtedness
of the Company to the Registered Holder or by the offset of amounts due under
the Lease.

                                      H-2
<PAGE>   58

       (b) Effective Time of Exercise. Each exercise of this Warrant shall be
deemed to have been effected immediately prior to the close of business on the
day on which this Warrant shall have been surrendered to the Company as provided
in subsection 1(a) above accompanied by payment in full of the Purchase Price
(the "Exercise Date"). At such time, the person or persons in whose name or
names any certificates for Warrant Shares shall be issuable upon such exercise
as provided in subsection 1(d) below shall be deemed to have become the holder
or holders of record of the Warrant Shares represented by such certificates.

       (c) Net Issue Exercise.

              (i) In lieu of exercising this Warrant in the manner provided
above in Section 1(a), the Registered Holder may elect to receive shares equal
to the value of this Warrant (or the portion thereof being canceled) by
surrender of this Warrant at the principal office of the Company together with
notice of such election in which event the Company shall issue to such
Registered Holder a number of Warrant Shares computed using the following
formula:

                                    X=Y(A-B)
                                        A

Where         X = The number of Warrant Shares to be issued to the Registered
                  Holder.

              Y = The number of Warrant Shares purchasable under this Warrant
                  (at the date of such calculation).

              A = The fair market value of one Warrant Share (at the date of
                  such calculation).

              B = The Purchase Price (as adjusted to the date of such
                  calculation).

              (ii) For purposes of this Agreement, the "Fair Market Value" of
one Warrant Share on the date of calculation shall mean:

                     (A) If the Common Stock is listed on a national securities
exchange, the Nasdaq National Market or another nationally recognized trading
system (including, without limitation, the OTC Bulletin Board and, if the
average daily trading volume for the preceding 10 days has been at least 100,000
shares, the Pink Sheets) as of the Exercise Date, the Fair Market Value per
share of Common Stock shall be deemed to be the average of the high and low
reported sale prices per share of Common Stock thereon on the trading day
immediately preceding the Exercise Date (provided that if no such price is
reported on such day, the Fair Market Value per share of Common Stock shall be
determined pursuant to clause (B)).

                     (B) If the Common Stock is not listed on a national
securities exchange, the Nasdaq National Market or another nationally recognized
trading system as of the Exercise Date, the Fair Market Value per share of
Common Stock shall be deemed to be the amount most recently determined by the
Board of Directors to represent the fair market value per share of the Common
Stock (including without limitation a determination for purposes of granting
Common Stock options or issuing Common Stock under an employee benefit plan of
the Company); and, upon request of the Registered Holder, the Board of Directors
(or a representative thereof) shall promptly notify the Registered Holder of the
Fair Market Value per share of Common Stock. Notwithstanding the foregoing, if
the Board of Directors has not made such a determination within the three-month
period prior to the Exercise Date, then (A) the Board of Directors shall make a
determination of the Fair Market Value per share of the Common Stock within 15
days of a request by the Registered Holder that it do so, and (B) the exercise
of this Warrant pursuant to this subsection 1(c) shall be delayed until such
determination is made.

              (d) Delivery to Holder. As soon as practicable after the exercise
of this Warrant in full or in part, and in any event within 5 business days
thereafter, the Company, at its expense, will cause to be issued in the name of,
and delivered to, the Registered Holder, or as such Registered Holder may
direct:

                     (i) a certificate or certificates for the number of full
Warrant Shares to which the Registered Holder shall be entitled upon such
exercise plus, in lieu of any fractional share to which the Registered Holder
would otherwise be entitled, cash in an amount determined pursuant to Section 3
hereof; and

                                      H-3
<PAGE>   59

                     (ii) in case such exercise is in part only, a new warrant
or warrants (dated the date hereof) of like tenor, calling in the aggregate on
the face or faces thereof for the number of remaining Warrant Shares.

2.     ADJUSTMENTS.

              (a) Adjustment for Stock Splits and Combinations. If the Company
shall at any time or from time to time after the date on which this Warrant was
first issued (the "Original Issue Date") effect a subdivision of the outstanding
Common Stock, the Purchase Price then in effect immediately before that
subdivision shall be proportionately decreased. If the Company shall at any time
or from time to time after the Original Issue Date combine the outstanding
shares of Common Stock, the Purchase Price then in effect immediately before the
combination shall be proportionately increased. Any adjustment under this
paragraph shall become effective at the close of business on the date the
subdivision or combination becomes effective.

              (b) Adjustment for Certain Dividends and Distributions. In the
event the Company at any time, or from time to time after the Original Issue
Date shall make or issue, or fix a record date for the determination of holders
of Common Stock entitled to receive, a dividend or other distribution payable in
additional shares of Common Stock, then and in each such event the Purchase
Price then in effect immediately before such event shall be decreased as of the
time of such issuance or, in the event such a record date shall have been fixed,
as of the close of business on such record date, by multiplying the Purchase
Price then in effect by a fraction:

              (1)    the numerator of which shall be the total number of shares
                     of Common Stock issued and outstanding immediately prior to
                     the time of such issuance or the close of business on such
                     record date, and

              (2)    the denominator of which shall be the total number of
                     shares of Common Stock issued and outstanding immediately
                     prior to the time of such issuance or the close of business
                     on such record date plus the number of shares of Common
                     Stock issuable in payment of such dividend or distribution;

              provided, however, if such record date shall have been fixed and
such dividend is not fully paid or if such distribution is not fully made on the
date fixed therefor, the Purchase Price shall be recomputed accordingly as of
the close of business on such record date and thereafter the Purchase Price
shall be adjusted pursuant to this paragraph as of the time of actual payment of
such dividends or distributions.

              (c) Adjustment in Number of Warrant Shares. When any adjustment is
required to be made in the Purchase Price pursuant to subsections 2(a) or 2(b),
the number of Warrant Shares purchasable upon the exercise of this Warrant shall
be changed to the number determined by dividing (i) an amount equal to the
number of shares issuable upon the exercise of this Warrant immediately prior to
such adjustment, multiplied by the Purchase Price in effect immediately prior to
such adjustment, by (ii) the Purchase Price in effect immediately after such
adjustment.

              (d) Adjustments for Other Dividends and Distributions. In the
event the Company at any time or from time to time after the Original Issue Date
shall make or issue, or fix a record date for the determination of holders of
Common Stock entitled to receive, a dividend or other distribution payable in
securities of the Company (other than shares of Common Stock) or in cash or
other property (other than cash out of earnings or earned surplus, determined in
accordance with generally accepted accounting principles), then and in each such
event provision shall be made so that the Registered Holder shall receive upon
exercise hereof, in addition to the number of shares of Common Stock issuable
hereunder, the kind and amount of securities of the Company and/or cash and
other property which the Registered Holder would have been entitled to receive
had this Warrant been exercised into Common Stock on the date of such event and
had the Registered Holder thereafter, during the period from the date of such
event to and including the Exercise Date, retained any such securities
receivable, giving application to all adjustments called for during such period
under this Section 2 with respect to the rights of the Registered Holder.

                                      H-4
<PAGE>   60

              (e) Adjustment for Mergers or Reorganizations, etc. If there shall
occur any reorganization, recapitalization, consolidation, merger or any similar
corporate reorganization involving the Company (or any other corporation the
stock or securities of which are receivable upon the exercise of this Warrant)
in which the Common Stock is converted into or exchanged for securities, cash or
other property (other than a transaction covered by subsections 2(a) or 2(b)),
then, following any such reorganization, recapitalization, consolidation or
merger, the Registered Holder shall receive upon the exercise hereof the kind
and amount of securities, cash or other property which the Registered Holder
would have been entitled to receive if, immediately prior to such
reorganization, recapitalization, consolidation or merger, the Registered Holder
had held the number of shares of Common Stock subject to this Warrant
("Substituted Property"). In the event that the Company is not the acquiring or
surviving entity in such transaction, then the acquirer or survivor, at its
option, may repurchase this Warrant, effective not later than the effective date
of the acquisition, merger or other transaction, by issuing the Holder the
Substituted Property which would have been issuable if the Holder had chosen to
exercise this Warrant in full using the exercise method described in Section
1(b), above, at the time of the repurchase.

              (f) Certificate as to Adjustments. Upon the occurrence of each
adjustment or readjustment of the Purchase Price pursuant to this Section 2, the
Company at its expense shall promptly compute such adjustment or readjustment in
accordance with the terms hereof and furnish to the Registered Holder a
certificate setting forth such adjustment or readjustment (including the kind
and amount of securities, cash or other property for which this Warrant shall be
exercisable and the Purchase Price) and showing in detail the facts upon which
such adjustment or readjustment is based. The Company shall, upon the written
request at any time of the Registered Holder, furnish or cause to be furnished
to the Registered Holder a certificate setting forth (i) the Purchase Price then
in effect and (ii) the number of shares of Common Stock and the amount, if any,
of other securities, cash or property which then would be received upon the
exercise of this Warrant.

3.     FRACTIONAL SHARES. THE COMPANY SHALL NOT BE REQUIRED UPON THE EXERCISE OF
THIS WARRANT TO ISSUE ANY FRACTIONAL SHARES, BUT SHALL MAKE AN ADJUSTMENT
THEREFOR IN CASH ON THE BASIS OF THE FAIR MARKET VALUE PER SHARE OF COMMON
STOCK.

4.     REQUIREMENTS FOR TRANSFER.

              (a) Neither this Warrant nor the Warrant Shares shall be sold or
transferred unless either (i) they first shall have been registered under the
Securities Act of 1933, as amended (the "Act"), or (ii) the Company first shall
have been furnished with an opinion of legal counsel, reasonably satisfactory to
the Company, to the effect that such sale or transfer is exempt from the
registration requirements of the Act.

              (b) Notwithstanding the foregoing, no registration or opinion of
counsel shall be required for (i) a transfer by a Registered Holder which is a
corporation to a wholly owned subsidiary of such corporation, a transfer by a
Registered Holder which is a partnership to a partner of such partnership or a
retired partner of such partnership or to the estate of any such partner or
retired partner, a transfer by a Registered Holder which is a limited liability
company to a member of such limited liability company or a retired member or to
the estate of any such member or retired member, or a transfer by a Registered
Holder which is a member of the National Association of Securities Dealers (the
"NASD") to an officer or employee of the Registered Holder as permitted by NASD
rules, provided that the transferee in each case agrees in writing to be subject
to the terms of this Section 4, or (ii) a transfer made in accordance with Rule
144 under the Act.

              (c) Each certificate representing Warrant Shares shall bear a
legend substantially in the following form:

       "The securities represented by this certificate have not been registered
       under the Securities Act of 1933, as amended. The securities represented
       by this certificate are subject to the restrictions on transfer set forth
       in that certain Warrant dated May __, 2001 and, except as otherwise
       provided therein, may not be offered, sold or otherwise transferred,
       pledged or hypothecated unless and until such securities are registered
       under such Act or an opinion of counsel satisfactory to the Company is
       obtained to the effect that such registration is not required."

                                      H-5
<PAGE>   61

The foregoing legend shall be removed from the certificates representing any
Warrant Shares, at the request of the holder thereof, at such time as they
become eligible for resale pursuant to Rule 144(k) under the Act or if an
effective registration statement is then in effect permitting the resale of the
Warrant Shares.

              (d) If at any time, the Company proposes to file with the SEC a
registration statement on Form S-3 (a "Registration Statement") relating to an
offering for its own account or the account of others under the Act of any
shares of Common Stock, the Company shall promptly send to the Registered Holder
written notice of the Company's intention to file a Registration Statement and
of such Registered Holder's rights under this Section 4(d) and, if within twenty
(20) days after receipt of such notice, such Registered Holder shall so request
in writing, the Company shall include in such Registration Statement all or any
part of the Warrant Shares such Registered Holder requests to be registered.
Such registration shall be subject to customary obligations by the Registered
Holder to provide information to the Company as required by the Company so as to
effect the inclusion of the Warrant Shares in the Registration Statement. The
Registered Holder's right of registration of the Warrant Shares under this
Section 4(d) will, at all times, be subject to the good faith judgment of the
Company's Board of Directors and management to, at any time, withhold
registration before the effectiveness of any Registration Statement or to cancel
registration at any time after a Registration Statement has become effective
without liability of the Company to the Registered Holder.

5.     NO IMPAIRMENT. THE COMPANY WILL NOT, BY AMENDMENT OF ITS CHARTER OR
THROUGH ANY REORGANIZATION, TRANSFER OF ASSETS, CONSOLIDATION, MERGER,
DISSOLUTION, ISSUE OR SALE OF SECURITIES OR ANY OTHER VOLUNTARY ACTION, AVOID OR
SEEK TO AVOID THE OBSERVANCE OR PERFORMANCE OF ANY OF THE TERMS OF THIS WARRANT,
BUT WILL AT ALL TIMES IN GOOD FAITH ASSIST IN THE CARRYING OUT OF ALL SUCH TERMS
AND IN THE TAKING OF ALL SUCH ACTION AS MAY BE NECESSARY OR APPROPRIATE IN ORDER
TO PROTECT THE RIGHTS OF THE HOLDER OF THIS WARRANT AGAINST IMPAIRMENT.

6.     NOTICES OF RECORD DATE, ETC. IN THE EVENT:

              (a) the Company shall take a record of the holders of its Common
Stock (or other stock or securities at the time deliverable upon the exercise of
this Warrant) for the purpose of entitling or enabling them to receive any
dividend or other distribution, or to receive any right to subscribe for or
purchase any shares of stock of any class or any other securities, or to receive
any other right; or of any capital reorganization of the Company, any
reclassification of the Common Stock of the Company, any consolidation or merger
of the Company with or into another corporation (other than a consolidation or
merger in which the Company is the surviving entity and its Common Stock is not
converted into or exchanged for any other securities or property), or any
transfer of all or substantially all of the assets of the Company; or

              (b) of the voluntary or involuntary dissolution, liquidation or
winding-up of the Company,

then, and in each such case, the Company will mail or cause to be mailed to the
Registered Holder a notice specifying, as the case may be, (i) the record date
for such dividend, distribution or right, and the amount and character of such
dividend, distribution or right, or (ii) the effective date on which such
reorganization, reclassification, consolidation, merger, transfer, dissolution,
liquidation or winding-up is to take place, and the time, if any is to be fixed,
as of which the holders of record of Common Stock (or such other stock or
securities at the time deliverable upon the exercise of this Warrant) shall be
entitled to exchange their shares of Common Stock (or such other stock or
securities) for securities or other property deliverable upon such
reorganization, reclassification, consolidation, merger, transfer, dissolution,
liquidation or winding-up. Such notice shall be mailed at least ten days prior
to the record date or effective date for the event specified in such notice.

7.     RESERVATION OF STOCK. THE COMPANY WILL AT ALL TIMES RESERVE AND KEEP
AVAILABLE, SOLELY FOR ISSUANCE AND DELIVERY UPON THE EXERCISE OF THIS WARRANT,
SUCH NUMBER OF WARRANT SHARES AND OTHER SECURITIES, CASH AND/OR PROPERTY, AS
FROM TIME TO TIME SHALL BE ISSUABLE UPON THE EXERCISE OF THIS WARRANT.

                                      H-6
<PAGE>   62

8.     EXCHANGE OF WARRANTS. UPON THE SURRENDER BY THE REGISTERED HOLDER,
PROPERLY ENDORSED, TO THE COMPANY AT THE PRINCIPAL OFFICE OF THE COMPANY, THE
COMPANY WILL, SUBJECT TO THE PROVISIONS OF SECTION 4 HEREOF, ISSUE AND DELIVER
TO OR UPON THE ORDER OF SUCH REGISTERED HOLDER, AT THE COMPANY'S EXPENSE, A NEW
WARRANT OR WARRANTS OF LIKE TENOR, IN THE NAME OF THE REGISTERED HOLDER OR AS
THE REGISTERED HOLDER (UPON PAYMENT BY THE REGISTERED HOLDER OF ANY APPLICABLE
TRANSFER TAXES) MAY DIRECT, CALLING IN THE AGGREGATE ON THE FACE OR FACES
THEREOF FOR THE NUMBER OF SHARES OF COMMON STOCK (OR OTHER SECURITIES, CASH
AND/OR PROPERTY) THEN ISSUABLE UPON EXERCISE OF THIS WARRANT.

9.     REPLACEMENT OF WARRANTS. UPON RECEIPT OF EVIDENCE REASONABLY SATISFACTORY
TO THE COMPANY OF THE LOSS, THEFT, DESTRUCTION OR MUTILATION OF THIS WARRANT AND
(IN THE CASE OF LOSS, THEFT OR DESTRUCTION) UPON DELIVERY OF AN INDEMNITY
AGREEMENT (WITH SURETY IF REASONABLY REQUIRED) IN AN AMOUNT REASONABLY
SATISFACTORY TO THE COMPANY, OR (IN THE CASE OF MUTILATION) UPON SURRENDER AND
CANCELLATION OF THIS WARRANT, THE COMPANY WILL ISSUE, IN LIEU THEREOF, A NEW
WARRANT OF LIKE TENOR.

10.    TRANSFERS, ETC.

              (a) The Company will maintain a register containing the name and
address of the Registered Holder of this Warrant. The Registered Holder may
change its or his address as shown on the warrant register by written notice to
the Company requesting such change.

              (b) Subject to the provisions of Section 4 hereof, this Warrant
and all rights hereunder are transferable, in whole or in part, upon surrender
of this Warrant with a properly executed assignment (in the form of Exhibit II
hereto) at the principal office of the Company.

              (c) Until any transfer of this Warrant is made in the warrant
register, the Company may treat the Registered Holder as the absolute owner
hereof for all purposes; provided, however, that if and when this Warrant is
properly assigned in blank, the Company may (but shall not be obligated to)
treat the bearer hereof as the absolute owner hereof for all purposes,
notwithstanding any notice to the contrary.

11.    REPRESENTATIONS OF THE REGISTERED HOLDER. THE REGISTERED HOLDER OF THIS
WARRANT REPRESENTS AND WARRANTS TO THE COMPANY AS FOLLOWS:

              (a) Investment. The Registered Holder is acquiring this Warrant
and the Warrant Shares issuable upon the exercise of this Warrant, for its own
account for investment and not with a view to, or for sale in connection with,
any distribution thereof, nor with any present intention of distributing or
selling the same, except as otherwise may be permitted under applicable
securities laws.

              (b) Authority. The Registered Holder has full power and authority
to enter into and to perform this Warrant in accordance with its terms. The
Registered Holder has not been organized specifically for the purpose of
investing in the Company.

              (c) Accredited Investor. The Registered Holder is an Accredited
Investor within the definition set forth in Rule 501(a) promulgated under the
Securities Act.

12.    MAILING OF NOTICES, ETC. ALL NOTICES AND OTHER COMMUNICATIONS FROM THE
COMPANY TO THE REGISTERED HOLDER SHALL BE MAILED BY FIRST-CLASS CERTIFIED OR
REGISTERED MAIL, POSTAGE PREPAID, TO THE ADDRESS LAST FURNISHED TO THE COMPANY
IN WRITING BY THE REGISTERED HOLDER. ALL NOTICES AND OTHER COMMUNICATIONS FROM
THE REGISTERED HOLDER OR IN CONNECTION HEREWITH TO THE COMPANY SHALL BE MAILED
BY FIRST-CLASS CERTIFIED OR REGISTERED MAIL, POSTAGE PREPAID, TO THE COMPANY AT
ITS PRINCIPAL OFFICE SET FORTH BELOW. IF THE COMPANY SHOULD AT ANY TIME CHANGE
THE LOCATION OF ITS PRINCIPAL OFFICE TO A PLACE OTHER THAN AS SET FORTH BELOW,
IT SHALL GIVE FIVE DAYS PRIOR WRITTEN NOTICE TO THE REGISTERED HOLDER AND
THEREAFTER ALL REFERENCES IN THIS WARRANT TO THE LOCATION OF ITS PRINCIPAL
OFFICE AT THE PARTICULAR TIME SHALL BE AS SO SPECIFIED IN SUCH NOTICE.

13. NO RIGHTS AS SHAREHOLDER. UNTIL THE EXERCISE OF THIS WARRANT, THE REGISTERED
HOLDER SHALL NOT HAVE OR EXERCISE ANY RIGHTS BY VIRTUE HEREOF AS A SHAREHOLDER
OF THE COMPANY. NOTWITHSTANDING THE FOREGOING, IN THE EVENT (i) THE COMPANY
EFFECTS A SPLIT OF THE COMMON STOCK BY MEANS OF A STOCK DIVIDEND AND THE
PURCHASE PRICE OF AND THE NUMBER OF WARRANT SHARES ARE ADJUSTED AS OF THE DATE
OF THE DISTRIBUTION OF THE DIVIDEND (RATHER THAN AS OF THE

                                      H-7
<PAGE>   63

RECORD DATE FOR SUCH DIVIDEND), AND (ii) THE REGISTERED HOLDER EXERCISES THIS
WARRANT BETWEEN THE RECORD DATE AND THE DISTRIBUTION DATE FOR SUCH STOCK
DIVIDEND, THE REGISTERED HOLDER SHALL BE ENTITLED TO RECEIVE, ON THE
DISTRIBUTION DATE, THE STOCK DIVIDEND WITH RESPECT TO THE SHARES OF COMMON STOCK
ACQUIRED UPON SUCH EXERCISE, NOTWITHSTANDING THE FACT THAT SUCH SHARES WERE NOT
OUTSTANDING AS OF THE CLOSE OF BUSINESS ON THE RECORD DATE FOR SUCH STOCK
DIVIDEND.

14.    CHANGE OR WAIVER. ANY TERM OF THIS WARRANT MAY BE CHANGED OR WAIVED ONLY
BY AN INSTRUMENT IN WRITING SIGNED BY THE PARTY AGAINST WHICH ENFORCEMENT OF THE
CHANGE OR WAIVER IS SOUGHT.

15.    SECTION HEADINGS. THE SECTION HEADINGS IN THIS WARRANT ARE FOR THE
CONVENIENCE OF THE PARTIES AND IN NO WAY ALTER, MODIFY, AMEND, LIMIT OR RESTRICT
THE CONTRACTUAL OBLIGATIONS OF THE PARTIES.

16.    GOVERNING LAW. THIS WARRANT WILL BE GOVERNED BY AND CONSTRUED IN
ACCORDANCE WITH THE INTERNAL LAWS OF THE STATE OF CALIFORNIA (WITHOUT REFERENCE
TO THE CONFLICTS OF LAW PROVISIONS THEREOF).

                            [SIGNATURE PAGE FOLLOWS]

                                      H-8
<PAGE>   64

EXECUTED as of the Date of Issuance indicated above.

                                        ECLIPSE SURGICAL TECHNOLOGIES, INC.

                                        By:
                                               ---------------------------------

                                        Name:
                                               ---------------------------------
                                        Title:
                                               ---------------------------------

ATTEST:

----------------------------

                                        PRINCIPAL OFFICE:

                                        ----------------------------------------

                                        ----------------------------------------

                                        ----------------------------------------

                                      H-9
<PAGE>   65

                                                                       EXHIBIT I

PURCHASE FORM
To:_________________                                          Dated:____________

              The undersigned, pursuant to the provisions set forth in the
attached Warrant (No. ___), hereby irrevocably elects to purchase (check
applicable box):

       -      _____ shares of the Common Stock covered by such Warrant; or

       -      the maximum number of shares of Common Stock covered by such
              Warrant pursuant to the cashless exercise procedure set forth in
              Section 1(b).

              The undersigned herewith makes payment of the full purchase price
for such shares at the price per share provided for in such Warrant, which is
$________ in lawful money of the United States. Such payment takes the form of
(check applicable box or boxes):

       -      $______ in lawful money of the United States; and/or

       -      the cancellation of such portion of the attached Warrant as is
              exercisable for a total of _____ Warrant Shares (using a Fair
              Market Value of $_____ per share for purposes of this
              calculation); and/or

       -      the cancellation of such number of Warrant Shares as is necessary,
              in accordance with the formula set forth in Section 1(c), to
              exercise this Warrant with respect to the maximum number of
              Warrant Shares purchasable pursuant to the cashless exercise
              procedure set forth in Section 1(c).

              Signature:
                              ------------------------

              Address:
                              ------------------------

                              ------------------------

                                      H-10
<PAGE>   66
                                                                      EXHIBIT II

                                ASSIGNMENT FORM

              FOR VALUE RECEIVED, ________________________________________
hereby sells, assigns and transfers all of the rights of the undersigned under
the attached Warrant (No. ____) with respect to the number of shares of Common
Stock covered thereby set forth below, unto:

Name of Assignee             Address                       No. of Shares

Dated:
      ---------------------------

Signature:
          -----------------------

                                      H-11
<PAGE>   67

                                                                     EXHIBIT "J"

                                     SIGNAGE

                                       J-1
<PAGE>   68

                                                                     EXHIBIT "J"

                                     SIGNAGE

                                       J-2

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