Document:

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                                                                   EXHIBIT 10.8

                                LEASE AGREEMENT

                                    between

                           JOE SHEKOU and HAIDY SHEKOU
                                   -LANDLORD-

                                      and

                                 AUTODESK, INC.
                                    -TENANT-

                                 June 30, 1998
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                                LEASE AGREEMENT

      THIS LEASE AGREEMENT (the "Lease") is made and entered into as of the 30th
day of June, 1998, by and between JOE SHEKOU and HAIDY SHEKOU, husband and wife
(the "Landlord"), and AUTODESK, INC., a Delaware corporation (the "Tenant").

                                    RECITALS

      A.    WHEREAS, Landlord owns certain real property in San Rafael,
California, that is approved for construction of a two-story commercial office
building.

      B.    WHEREAS, Landlord has substantially completed construction of said
building on said real property for use and occupancy by Tenant, and others and
Tenant desires to lease the entire second floor, and a portion of the first
floor of such building following completion of construction thereof by Landlord.

      C.    WHEREAS, the parties desire to enter into this Lease to provide for
Tenant's use and occupancy of such building.

      NOW, THEREFORE, in consideration of the foregoing and of the material
covenants and obligations set forth therein, Landlord and Tenant hereby agree
as follows:

1.    DEFINITIONS

      1.1   Certain Definitions. In addition to the terms defined elsewhere in
this Lease, the terms set forth below shall have the following meanings:

            1.1.1  The "Building" shall mean that certain two (2) story office
building being constructed by Landlord on the Land and located at 1 McInnis
Parkway, San Rafael, California.

            1.1.2  The "Land" shall mean that certain parcel of land in San
Rafael, Marin County, California, containing approximately 3.05 acres, as more
particularly described in Exhibit A attached hereto.

            1.1.3  The "Property" shall mean the Land and the Building.

            1.1.4  The "Premises" shall mean approximately 24,640 rentable
square feet comprising the entire second floor of the Building (19,813), and a
portion of the first floor of the Building (4827), both as shown on the floor
plans of the Building attached hereto as Exhibit B.

            1.1.5  The "Landlord Parties" shall mean Landlord's subsidiaries,
affiliates,

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agents, contractors, employees, directors and officers, and the constituent
partners of Landlord (if Landlord is a partnership).

          1.1.6 The "Tenant Parties" shall mean Tenant's agents, contractors,
employees, subtenants or other occupants of the Premises.

2.   PREMISES.

     2.1  Lease of Premises. Subject to and upon the terms, covenants and
conditions hereinafter set forth, Landlord hereby leases the Premises to Tenant
and Tenant hereby leases the Premises from Landlord. As an integral part of
Tenant's lease of the Premises, Tenant shall have the non-exclusive right to
use the common areas of the Building, including the ground floor lobby,
bathrooms, halls, passages, exits, entrances, elevators, loading and storage
areas, stairways and, with express consent for the use and improvements to be
used thereon and/or subject to the provisions herein contained concerning "Roof
Rights", the roof of the Building, and the non-exclusive use of all portions of
the Land outside of the Building, including parking spaces, roadways, walkways,
trash enclosures and disposal areas, landscaped areas and other areas within
the exterior boundaries of the Land. Landlord understands that Tenant desires
the use of four parking spaces for each 1000 square feet of usable space, and
Landlord will make every effort to protect that expectation, by the adoption,
from time to time, of parking rules or a plan(s) for parking that takes into
consideration the expectations and needs of all tenants of the Building. In
addition, Landlord agrees that during the term of this Lease, it will not
reduce the number of parking spaces such that, as a total for the Building,
there will be less than four spaces per 1000 square feet of usable space.

3.   TERM.

     3.1  Initial Term.

          3.1.1 Commencement and Expiration Dates. The initial term of this
Lease (the "Initial Term") and Tenant's obligation to pay Rent shall commence
(the "Commencement Date") on the earlier to occur of (i) one hundred twenty
(120) days from and after June 19, 1998, or (ii) the occupancy of at least 75%
of the Premises for business purposes by Tenant. The time set forth in item (i)
above shall be delayed or deferred on a day by day basis until substantial
completion of the Base Building Shell. The initial term of the Lease shall
continue, unless sooner terminated as hereinafter provided, until the last day
of the eighth (8th) Lease Year (the "Expiration Date"). As used herein, the
term "Lease Year" means each consecutive twelve (12) month period during the
term of this Lease; provided, however, that if the Commencement Date occurs on
a  day other than the first day of a month, then the first (1st) Lease Year
shall consist of the partial month in which the Commencement Date occurs plus
the succeeding twelve (12) full calendar months. The term of this Lease may be
extended by Tenant pursuant to the provisions of Section 3.2 below.

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          3.1.2 Base Building Delivery Date. Landlord shall complete the Base
Building Shell and deliver possession of the Building to Tenant for the
construction of the Tenant Improvements on the date of the execution of this
lease (the "Base Building Delivery Date"). Following said completion, Tenant
may enter upon the Premises prior to the Commencement Date for the purpose of
fixturing and constructing the tenant improvements described in that certain
Construction Addendum dated concurrently herewith by and between Landlord and
Tenant (the "Tenant Improvements"). Such early entry shall be at Tenant's sole
risk and subject to all the terms and provisions hereof, except for the payment
of Rent which shall commence on the date set forth in Paragraph 3.1.1. Landlord
shall have the right to impose such additional reasonable conditions on
Tenant's early entry as Landlord shall deem appropriate.

          3.1.3 Tenant's Termination Right. If Landlord fails to deliver the
Building to Tenant within sixty days of the Base Building Delivery Date, Tenant
shall have the right to terminate this Lease, within ten (10) business days
after the passage of such 60th day, by delivering written notice to Landlord of
Tenant's election to so terminate this Lease. Following such termination,
Landlord and Tenant shall have no further obligations or liability under this
Lease, except for liabilities accrued under the Lease prior to the date of
termination.

     3.2  Extension Options.

3.2.1 Option Rights. Provided that Tenant is not in default under this Lease at
the time of exercise of an option to extend or at the time of the commencement
of the applicable option term, Tenant shall have the right to extend the Term
of this Lease for two (2) additional periods of five (5) years (individually
and collectively, "Option Term") commencing upon the expiration of the initial
term of this Lease. If Tenant elects to extend this Lease for an Option Term,
Tenant shall give written notice ("Exercise Notice") of its exercise to
Landlord not less than one hundred and eighty (180) days prior to the
expiration of the Initial Term or the then current Option Term, as applicable.
Tenant's failure to timely provide the Exercise Notice shall be deemed, without
notice, a waiver of Tenant's rights to extend the Term of this Lease, and such
time requirement shall be strictly construed. The terms, covenants and
conditions applicable to each Option Term shall be the same terms, covenants
and conditions of this Lease except that (i) Tenant shall not be entitled to
any further option to extend after the second Option Term and (ii) the Rent for
each Option Term shall be adjusted as provided in this Paragraph 3.2. The
option to extend granted to Tenant pursuant to this Paragraph 3.2 shall not be
assignable to any successor assign of Tenant, without the written consent of
Landlord, unless the assignment is of all of the space then subject to this
Lease, or at a minimum, all of the second floor, in which event the option to
extend shall be assignable subject to the provisions herein contained on
assignment. It is understood that the options to extend, whether or not subject
to an assignment, may be for all of the space then subject to this Lease or, at
the election of Tenant, all of the second floor.

3.2.2. Determination of Rent During Option Term.

       3.2.2.1 Landlord and Tenant shall have thirty (30) days after Landlord
receives

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an Exercise Notice in which to agree on the Rent during the Option Term which
shall be equal to ninety-seven percent (97%) of the then fair market rental
value of the Premises for the applicable Option Term. In determining the fair
market rental value of the Premises during each Option Term, consideration shall
be given the quality, size, improvements to the Premises and Building, design
and location of the Building, and the rentals being asked for and obtained for
comparable, improved, office space located in the geographical area of the
Building. It is understood that the use of 97% of the then fair market rental
value is to recognize that Landlord shall have no obligation for leasing
commissions, improvements, upgrades, or other expenses associated with a new
tenant. Landlord shall have the obligation to provide an allowance for
refurbishment, the amount of which shall be $4 per usable square foot for the
first exercised option term, and $8 per usable square foot for the second option
term. It is also understood that the fair market rental value shall be
applicable only to the first year of the option term and thereafter said rent
shall be subject to yearly escalation in conformance with then applicable
escalation clauses in such leases as have been considered comparable for
purposes of fixing fair market rent. If Landlord and Tenant agree on the Rent
for the applicable Option Term during the thirty (30) day period, they
immediately shall execute an amendment to this Lease stating the Rent for the
applicable Option Term.

     3.2.2.2   If Landlord and Tenant are unable to agree on the Rent (and/or
appropriate yearly escalator for the applicable Option Term within the thirty
(30) day period, then within ten (10) days after the expiration of the thirty
(30) day period, Landlord and Tenant shall each, at their own respective cost,
and by giving notice to the other party, appoint a real estate appraiser with at
last five (5) years' full-time commercial appraisal experience in the
geographical area of the Building to appraise and set the Rent for the
applicable Option Term. If either Landlord or Tenant does not appoint an
appraiser within ten (10) days after the other party has given notice of the
name of its appraiser, the single appraiser appointed shall be the sole
appraiser and shall set the Rent for the applicable Option Term. If two (2)
appraisers are appointed by Landlord and Tenant as stated in this Paragraph,
they shall meet promptly and attempt to set the Rent for the applicable Option
Term. If the two (2) appraisers are unable to agree within thirty (30) days
after the second appraiser has been appointed, they shall attempt to select a
third appraiser meeting the qualifications stated in this Paragraph within ten
(10) days after the last day the two (2) appraisers are given to set the Rent.
If they are unable to agree on the third appraiser, either Landlord or Tenant,
by giving ten (10) days' notice to the other party, can apply to the then
Presiding Judge of the Superior Court of Marin County for the selection of a
third appraiser who meets the qualifications stated in this Paragraph. Landlord
and Tenant each shall bear one-half (1/2) of all costs of obtaining an
appointment or of appointing the third appraiser and for paying the third
appraiser's fee. Within thirty (30) days after the selection of the third
appraiser, a majority of the appraisers shall set the Rent for the applicable
Option Term. If a majority of the appraisers is unable to set the Rent within
the stipulated period of time, the three (3) appraisals shall be added together
and their total divided by three (3); the resulting quotient shall be the Rent
for the Premises during the applicable Option Term. If the low appraisal is more
than ten percent (10%) lower than the middle appraisal, the low appraisal shall
be disregarded; if the high appraisal is more than ten percent (10%) higher than
the middle appraisal, the high appraisal shall be

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disregarded. If only one (1) appraisal is disregarded, the remaining two (2)
appraisals shall be added together and their total divided by two (2); the
resulting quotient shall be the Rent for the Premises during the applicable
Option Term. If both the low appraisal and the high appraisal are disregarded as
stated in this Paragraph, the middle appraisal shall be the Rent for the
Premises during the applicable Option Term.

     3.2.2.3   After the Rent for the Option Term has been set, the appraisers
shall notify Landlord and Tenant immediately and Landlord and Tenant shall
immediately execute an amendment to this Lease stating the Rent for the Option
Term.

4.   RENT

     4.1  Gross Rent. From and after the Commencement Date, Tenant shall pay to
Landlord during the first Lease Year gross rent (the "Rent") in the amount of
$2.08 per rentable square foot of the Premises per month.

     4.2  Annual Increase to Gross Rent. Landlord and Tenant have agreed that,
in lieu of Tenant having the obligation to pay for operating expenses and taxes
of the Property (other than as provided in Section 14.2 regarding payment by
Tenant for gas and electricity), the Rent shall be subject to regularly
scheduled annual increases commencing on the first day of the second Lease Year
and the first day of each Lease Year thereafter during the Initial Term, in
accordance with the following schedule:

<TABLE>
<CAPTION>
Lease Year        Monthly
              Per Square Foot
                Rental Rate
----------    ---------------
<S>               <C>              <C>
Second            $2.14            25.68
Third             $2.20            26.40
Fourth            $2.26            27.12
Fifth             $2.32            27.84
Sixth             $2.38            24.56
Seventh           $2.45            29.40
Eighth            $2.52            30.24
</TABLE>

     4.3  Payment of Rent. Rent shall be payable by Tenant in consecutive
monthly installments on or before the first day of each month, in advance, at
the address specified for Landlord in Section 25, or such other place as
Landlord shall designate, without any prior demand therefor and without any
abatement, deduction or setoff whatsoever except as otherwise expressly provided
in this Lease. If the Commencement Date should occur on a day other than the
first day of a calendar month, the rental for such fractional month shall be
prorated on a

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daily basis based upon the number of days in such month, and paid with the first
full month's rent.

     4.4  Late Charges. Tenant acknowledges that the late payment of any Rent
will cause Landlord to incur damages, the exact amount of which would be
impractical and extremely difficult to ascertain. Such damages may include,
without limitation, processing, accounting, and other administrative costs, loss
of use of the overdue funds, and late charges that may be imposed on Landlord by
the terms of any encumbrance and note secured by any encumbrance covering any
portion of the Property. Landlord and Tenant agree that if Landlord does not
receive any payment of Rent by the eighth (8th) day of a calendar month in which
Rent is due and Landlord has notified Tenant in writing by the fourth (4th) day
of such calendar month that such Rent has not been received, Tenant shall pay to
Landlord on demand a late charge in an amount equal to the late charge imposed
by the then current senior mortgage holder; provided, however, Tenant shall not
be responsible for a late charge that exceeds five percent (5%) of the Rent for
such month. The parties agree that such late charges represent a reasonable
estimate of the cost that Landlord will incur by reason of late payment by
Tenant.

     4.5  Interest. Notwithstanding any other provisions of this Lease, any
payment owed by either party to the other hereunder, including payment of Rent
hereunder, that is not paid when due shall bear interest from the date which is
fifteen (15) days following written notice to the party from whom such payment
is due that such payment is past due until the same has been fully paid, such
interest to be at a rate (the "Default Rate") that is equal to the lesser of (i)
two percent (2%) above the rate of interest publicly announced from time to time
by Bank of America N.T.&S.A. at its San Francisco headquarters as its "Reference
Rate" for commercial borrowing adjusted monthly on the first day of each month,
such adjustment to be effective for the following month, and (ii) the highest
rate permitted by law.

5.   OCCUPANCY

     5.1  Use. Tenant shall use and occupy the Premises for general office
purposes and reasonably related ancillary and lawful uses including, without
limitation, computer centers, client briefing and service centers, and training
rooms. Tenants may permit its employees to bring pets to the Premises so long as
they access the Premises exclusively by the rear entrance. In consideration of
this permitted use, Tenant agrees that it will supervise and control its
employees so as to assure Landlord that there shall be no disturbance in the use
of the building by other tenants. In the event of a complaint by other tenants
relating to this permitted use, whether it be due to barking, a pet found in the
building in an area other than in the Tenant's exclusive use Premises, or the
use of the exterior parking area for defecation, the pet(s) responsible shall be
permanently removed from the Premises and any damage caused to other tenants
resolved to their reasonable satisfaction by Tenant. It is understood and agreed
that the permitted occupation of the Premises by pets is an unusual permitted
use in a building with multiple tenants, and Tenant understands and agrees to
utilize its best efforts to assure Landlord the absence of any tenant complaints
on account of such permitted use.

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     5.2       Signage. Tenant, at its sole cost, shall have signage rights for
the property, including the right to install one or more signs on the exterior
of the building and to install one or more monument signs on the Land. Such
signage shall be subject to the approval of the City of San Rafael, if and to
the extent required; and such signage shall also be subject to the approval of
Landlord, with such approval by Landlord not to be unreasonably withheld,
delayed, or conditioned. It is however understood that such signage shall not be
approved by Landlord in the event it is deemed inappropriate when compared with,
or lacks reasonable symmetry with size, shape, and positioning with the signage
of other tenants of the Building.

     5.3       Roof Rights.

     4.3.1     Communications Equipment.  Subject to the requirements of this
Paragraph 5.3, Tenant may install, maintain and operate, at Tenant's sole cost
and expense, one communications dish (not to exceed 3 feet in diameter) and
related equipment and support structures (collectively the "Communications
Equipment") on the roof of the Building in an area as Landlord may in its
reasonable discretion designate and run a cable therefrom into the Premises
through conduit space provided by Landlord in such locations as Landlord may in
its sole and absolute discretion designate. Tenant acknowledges that Tenant's
use of the roof of the Building is a non-exclusive use and Landlord may permit
any person or entity, including themselves, to use any other portion of the
roof of the Building for any use. Tenant hereby covenants and agrees that: (i)
the installation of the Communications Equipment shall be approved by Landlord,
which approval may be withheld by Landlord in its reasonable discretion; (ii)
if Landlord's structural engineer recommends that there be structural
reinforcement of the roof of the Building in connection with the installation
of the Communications Equipment, Tenant shall, prior to any installation of
the Communications Equipment, perform the same at Tenant's sole cost and
expense in accordance with plans and specifications approved by Landlord: (iii)
such installation (including, without limitation, any structural reinforcements
performed in connection therewith) shall be performed in compliance with all of
the provisions of this Lease applicable to alterations by Tenant; (iv) Tenant
shall, at its sole cost and expense, comply with all applicable laws, statures,
ordinances or governmental laws, rules, regulations or requirements of duly
constituted public authorities now in force or which may hereafter be in force
(collectively, "Laws") and procure and maintain all necessary permits and
approvals required therefor (Tenant hereby acknowledging that Landlord is
making no representations as to the permissibility of any Communications
Equipment on the roof of the Building by any governmental authority having
jurisdiction thereof); (v) Tenant shall promptly repair any damage (whether
structural or non-structural) caused to the roof or any other portion of the
Building or its fixtures, equipment and appurtenances by reason of the
installation, maintenance or operation of the Communications Equipment; (vi)
the installation, operation and maintenance of the Communications Equipment
shall not interfere with the operation and maintenance of any installations
existing on the date Tenant installs the Communications Equipment; (vii) if
Tenant's installation, operation or maintenance of the Communications Equipment
shall interfere with Landlord's rights (including, without limitation,
Landlord's right  to use the remainder of the roof of the Building

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for any purposes) or other present or future tenants in the Building, Tenant
shall cooperate with Landlord or such other tenants in eliminating such
interference; provided that in cases where the interference affects
installations existing on the date Tenant installs the Communications Equipment
the cost of remedying such interference shall be borne by Tenant; and (viii)
Tenant shall pay any additional or increased insurance premiums incurred by
Landlord, and shall obtain and pay for any additional insurance coverage for the
benefit of Landlord in such amount and of such type as Landlord may reasonably
require in connection with the Communications Equipment.

     5.3.2     Indemnification.  Tenant shall indemnify and hold Landlord
harmless from and against any and all liabilities, damages, claims, costs or
expenses relating to the negligent installation, maintenance and operation of
any Communications Equipment, together with all costs, expenses and liabilities
incurred in or in connection with each such claim or action or proceeding
brought thereon, including, without limitation, all reasonable attorneys' fees
and expenses. If the installation, maintenance or operation of the
Communications Equipment would revoke, negate or in any manner impair or limit
any roof warranty or guaranty for the Building, then Landlord may withhold
consent to such installation. Tenant shall remove the Communications Equipment
on the expiration or earlier termination of the Term and repair any damage to
the roof or any other portions of the Building caused by the installation or
removal of the Communications Equipment, all at Tenant's sole cost and expense
(or, at Landlord's election, Landlord shall perform such repairs and Tenant
shall reimburse Landlord for the actual reasonable costs thereof within thirty
(30) days after rendition of a bill therefor). Landlord shall have no liability
to repair or maintain the Communications Equipment, nor shall Landlord be
liable for any damage to the Communications Equipment, except to the extent
such damage is caused by the active negligence or willful misconduct of
Landlord or its employees.

     5.3.3     Relocation. Landlord shall have the right to relocate the
Communications Equipment, at Landlord's sole cost and expense (or at Tenant's
sole cost and expense if the relocation shall be required due to the
application of any Laws or if due to the request of Tenant), to any other
location on the roof of the Building, such right to be exercisable by Landlord
giving Tenant ten (10) days prior notice thereof (except in the case of an
emergency in which case Landlord shall give much notice as is reasonably
practicable). Tenant shall pay any amounts due to Landlord in connection with
the relocation of the Communications Equipment (if required, as provided above)
within 30 days after rendition of a bill therefor. Tenant shall not have the
right to object to any new location of the Communications Equipment unless such
new location shall adversely affect Tenant's actual use of the Communications
Equipment.

     5.3.4     No Transfer.

     The Communications Equipment shall be for the sole use of Tenant and for
no other parties. Tenant shall not resell in any form the use of the
Communications Equipment, including, without limitation, the granting of any
licensing or other rights.  The rights granted in this Paragraph 5.3 are given
in connection with and as part of the rights

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created under this Lease and are not separately transferable or assignable other
than in connection with an assignment of this Lease or a sublease of the
Premises as permitted by this Lease.

6.   ASSIGNMENT, MORTGAGE, SUBLETTING

     6.1  Consent Required. Except as provided below, neither Tenant nor
Tenant's legal representatives, successors or assigns, shall assign, mortgage or
encumber this Lease, or sublet, or use or occupy or permit the Premises or any
part thereof to be used or occupied by others, without the prior consent of
Landlord, which consent shall not be unreasonably withheld, conditioned, or
delayed. If this Lease be assigned, or if the Premises or any part thereof be
sublet or occupied by any party other than Tenant, Landlord may, after default
by Tenant and the failure to cure such default during any applicable cure
periods, collect rent from the assignee, subtenant or occupant and apply the net
amount collected to the rent herein reserved, but no such assignment,
subletting, occupancy or collection shall be deemed a waiver of this covenant,
or the acceptance of the assignee, subtenant or occupant as Tenant, or a release
of Tenant from the further performance by Tenant of the obligations on the part
of Tenant herein contained.

     6.2  Consent not Required. Tenant shall have the right, without Landlord's
consent, but with notice to Landlord, to assign this Lease or sublet all or a
portion of the Premises to any parent, subsidiary, affiliate or successor of
Tenant, to any person,, firm or corporation which shall be controlled by, under
the control of, or under common control with Tenant, or to any entity into
which Tenant may be merged or consolidated or which purchases all or
substantially all of the assets of Tenant. No assignment or sublease, whether
with or without Landlord's consent, shall relieve Tenant from its covenants and
obligations under this Lease.

     6.3  Standard of Reasonableness. Notwithstanding any contrary provision of
the foregoing, it shall be reasonable for Landlord to deny such consent to an
assignment or sublet in the following circumstances:

          6.3.1     The use to be made of the Premises by the proposed assignee
violates the terms of Section 5.1, or is a use which would be prohibited by any
other portion of this Lease; or

          6.3.2     The financial responsibility of the proposed assignee (as
opposed to a proposed subtenant) is not reasonably satisfactory to Landlord.

          6.3.3     The Tenant has defaulted in making a monetary payment, at
the time of the request for assignment, of the Lease, and the proposed assignee
is unable or unwilling to cure such monetary default.

     6.4  Future Consent. Landlord's consent to an assignment or sublease shall
not be construed to relieve Tenant or any assignee or subtenant from obtaining
the express consent in writing of Landlord to any further assignment or
sublease, to release Tenant from any liability whether past, present or future
under this Lease or to release Tenant from any liability under this

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Lease because of Landlord's failure to give notice of default under or in
respect of any of the terms, covenants, conditions, provisions or agreements of
this Lease.

        6.5     Information to be Furnished. Whether or not consent is required
hereunder, if Tenant desires at any time to assign or sublet the Premises or any
portion thereof, it shall first notify Landlord of its desire to do so and
shall submit in writing to Landlord: (i) the name of the proposed assignee or
subtenant; (ii) the nature of the proposed assignee or subtenant's business to
be carried on in the Premises; (iii) the terms and provisions of the proposed
assignment or sublease and a copy of the proposed assignment or sublease form
containing a description of the subject premises; and (iv) such financial
information, including financial statements as Landlord may reasonably request
concerning the proposed assignee or subtenant. If Tenant is required to request
Landlord's consent to a proposed assignment or sublease, pursuant to the terms
of the Lease, Tenant shall pay to Landlord, whether or not consent is
ultimately given, Landlord's reasonable attorneys' fees incurred in connection
with such request. If Landlord consents to the assignment or sublease, where
consent is required, Tenant may thereafter enter into a valid assignment or
sublease of the Premises or portion thereof, upon the terms and conditions and
with the proposed assignee or subtenant set forth in the information furnished
by Tenant to Landlord pursuant to this Paragraph 6.5.

7.      ALTERATIONS

        7.1     Consent Required. Except as set forth below, Tenant shall make
no alterations, decorations, additions or improvements in or to Premises
without Landlord's prior written consent, which consent shall not be
unreasonably withheld, conditioned or delayed. Tenant shall submit such
information as Landlord shall reasonably require, including, without
limitation, plans and specifications for such proposed work; provided, however,
that Tenant shall not be required to pay to Landlord any fee for Landlord's
review of such documents or information (including architectural or engineering
drawings). Landlord shall, within ten (10) business days following receipt of
Tenant's plans and specifications for the proposed work, review and either
approve, disapprove or conditionally approve, which conditional approval shall
include written comments to Tenant's plans. Failure of Landlord to respond to
said plans within such ten (10) business days shall constitute Landlord's
approval of said plans and specifications. It is understood that Landlord shall
not, and shall not be obliged to grant consent to any alteration which would
involve the cutting of the foundation.

        7.2     Consent Not Required. Notwithstanding the foregoing, Tenant
may, without the Landlord's consent, but with prior notice to Landlord, make
(i) alterations, additions and improvements to the tenant finish work in the
Premises, and (ii) other alterations, additions and improvements to the
Premises (not including any common areas of the Building) costing less than
$50,000 that are non-structural in nature and that do not require altering the
Building mechanical, plumbing or electrical systems ("Building Systems"). All
such work shall be done at Tenant's sole cost and expense. All work done by
Tenant shall be performed in compliance with applicable laws, ordinances,
regulations and requirements of governmental authorities having jurisdiction,
and in compliance with the rules, orders, directions and requirements of
insurance

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underwriters that are necessary for the maintenance of all-risk property
insurance for the Premises. Before commencing any work, Tenant shall give
Landlord at least ten (10) days' written notice of the proposed commencement of
such work in order to give Landlord an opportunity to prepare, post and record
such notice as may be permitted by law to protect Landlord's interest in the
Property from mechanic's liens. Any mechanic's lien filed against the Building
or the Land for work claimed to have been done for, or materials claimed to have
been furnished to Tenant, shall be discharged by Tenant, by bond or otherwise,
within thirty (30) days after the filing thereof, at the cost and expense of
Tenant. All improvements upon the Premises made by Tenant shall remain upon, and
be surrendered with the Premises, as a part thereof, at the end of the Term,
unless Tenant elects to remove the same. In any event, Tenant shall have the
right, but not the obligation, at the expiration or earlier termination of this
Lease, to remove any personal property of Tenant, supplemental HVAC unit,
signage installed by Tenant, computers and related equipment including
peripheral equipment and tape and disk vaults, all projectors and projection
screens and related equipment, blackboards, whiteboards, tack boards, and other
display units, telephone systems, cipher locks and electronic security systems,
paging systems, phone system equipment, including patch panel and subfeed panel
locations for such phone systems, fire suppression systems, CRT patch panels and
all other similar equipment of Tenant.

     7.3  Weight Restrictions. Tenant shall not install or permit the use of any
equipment or personal property or fixtures which exceed applicable design weight
limits.

8.   REPAIRS

     8.1  Tenant's Obligation to Repair. Subject to Landlord's repair and
maintenance obligations set forth in this Lease, Tenant shall, except for
ordinary wear and tear, acts of God and casualty, made all repairs in and about
the Premises necessary to preserve the Premises in good order and condition,
including, without limitation, fixtures, interior walls, interior surfaces of
exterior walls (however excluding exterior windows and window gaskets), doors
located within the Premises, provided, however, that Tenant shall not be
responsible for any repairs or maintenance (i) to the extent made necessary by
any defects in the Building or those portions of the Premises excluding the
Tenant Improvements (which items shall be repaired by Landlord at no expense to
Tenant), (ii) actually covered in whole, by Landlord's insurance or which would
have been covered under the insurance Landlord is required to carry under
Section 16, (iii) needed in connection with any negligence or willful misconduct
of Landlord or Landlord Parties, or (iv) made necessary by any casualty,
condemnation or Landlord's default under the terms of this Lease.

     8.2  Landlord's Obligation to Repair. Landlord shall maintain in good
condition and repair the foundations, exterior walls and roof of the Building,
all exterior windows and window frames, all structural elements of the Building,
the Building Systems (including, without limitation, the heating, ventilating
and air-conditioning system (except Tenant shall pay all costs for the routine,
non-capital maintenance of the heating, ventilating and air-conditioning system
in excess of the costs required to maintain a standard system for comparable
buildings to the Building for similar tenants, which amount, if the parties are
unable to agree, shall be determined

                                       11

<PAGE>   13
by binding arbitration), plumbing, electrical, life-safety, fire protection, and
sewer) and the parking areas, landscaping and other exterior portions of the
Property; provided, however, Landlord shall not be obligated to repair (i) any
defects in the Tenant Improvements, or (ii) any repairs necessitated by the
negligent acts of Tenant or Tenant's Parties to the extent such repairs are
actually covered by the insurance that Landlord is carrying or would have been
covered at the time of the repair by insurance Landlord is required to maintain
pursuant to the terms of the Lease. There shall be no allowance to Tenant for a
diminution of rental value, and Tenant waives any claim for, and Landlord shall
not be responsible to Tenant for any damage to person, including death, to
property, for loss of income due to inconvenience, interruption, loss of access,
annoyance or injury to business arising from the making of any repairs or
improvements in or to any portion of the Premises or Building or as a
consequence of any cessation of services (subject to the rights of Tenant to
such self help and rent abatement as is specifically provided for in the Lease)
so long as such repairs or improvements and/or restoration of services are
sought or are undertaken and accomplished in such manner as to minimize to the
extent reasonably possible any disruption to the business operations of Tenant
in the Premises, provided, however, in the event the Premises (or a portion
thereof) are rendered unusable during and as a consequence of any such repair
work undertaken by or on behalf of Landlord, then one (1) day of Rent (or such
proportionate amount as relates to the actually unusable portion of the
Premises) shall be abated for every day the Premises (or portion thereof) are
rendered unusable.

9.   REQUIREMENTS OF LAW

     9.1  Requirements of Law. Tenant, at Tenant's expense, shall comply with
all laws, rules, orders, ordinances, directions, regulations and requirements of
federal, state, county and municipal authorities (collectively, "Laws," or
individually, a "Law") pertaining to Tenant's use of the Property and with any
direction of any public officer pursuant to law, which shall impose any duty
upon Tenant with respect to the use or occupation of the Property, and shall not
do or permit to be done any at or thing upon the Property, which will invalidate
or be in conflict with any insurance policy covering the Building or its
fixtures, appurtenances or equipment or the property located therein, and shall
not do or permit to be done any act or thing upon the Property which shall or
might subject Landlord to any liability or responsibility for injury to any
person or persons or to any property by reason of any business or operation
being carried on upon the Property, provided, however, that Tenant shall not be
required to make any alterations of or improvements to the Property (structural
or otherwise) in order to so comply unless such alterations or improvements
shall be necessitated or occasioned by the particular nature or manner of
Tenant's use of the Property as opposed to office use in general. Tenant shall
not place a load upon any floor of the Premises exceeding the floor load per
square foot area which such floor was designed to carry and which is allowed by
law. Landlord, at Landlord's expense, shall comply with all Laws pertaining to
the Property and with any recorded covenants, conditions and restrictions
affecting the Land.

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<PAGE>   14
10.  SUBORDINATION, MORTGAGES, NON-DISTURBANCE

     10.1 Subordination. This Lease is automatically subject and subordinate to
(i) all ground or underlying leases, mortgages and deeds of trust which now
affect the Land, (ii) all renewals, modifications, consolidations, replacements
and extensions thereof, and (iii) any ground or underlying leases, mortgages, or
deeds of trust which may hereafter affect the Land; provided, however, that it
shall be a condition precedent to such subordination that Tenant, so long as not
then in material default of the Lease, receive from such lessor, mortgagee or
beneficiary a fully executed original of a Subordination, Non-Disturbance and
Attornment Agreement in a form which is commercially reasonable.

     10.2 Mortgages. In the event of foreclosure or exercise of power of sale
under any mortgage or deed of trust now or hereafter affecting the Land, Tenant
shall attorn to such holder or purchaser; provided, however, that it shall be a
condition precedent to such attornment that Tenant receive from such lessor,
mortgagee or beneficiary a fully executed original of the Subordination,
Non-Disturbance and Attornment Agreement specified in Section 10.3 below.
Notwithstanding this Section 10.2, such holder or purchaser may elect that this
Lease become or remain, as the case may be, superior to said mortgage or deed of
trust.

     10.3 Non-disturbance. Notwithstanding anything to the contrary herein
contained, with respect to any ground or underlying leases, mortgages or deeds
of trust which now or may hereafter affect the Land, this Lease shall not be
subject or subordinate thereto unless and until Landlord obtains from the
mortgagee under said mortgage, beneficiary under the deed of trust, ground
lessor under any ground lease or other secured party under any other security
instrument or arrangement placed against the Property, a Subordination,
Non-Disturbance and Attornment Agreement in a form which is commercially
reasonable and, so long as Tenant has, within ten days of request therefore
executed such Agreement.

11.  INDEMNIFICATION

     11.1 Indemnity. Subject to the terms of Section 16.4, and any express
waiver contained in the Lease, the parties hereto shall indemnify and hold
harmless the other party for all damages arising out of any damage to any person
or property occurring in, on, or about the Premises or the Property resulting
from the acts or omissions of the indemnifying party or their authorized
representatives.

     11.2 Waiver of Claims. Subject to the terms of Section 16.4, and any
express waiver contained in the Lease, the parties hereto shall not be liable to
the other party for any damage to the other party or such other party's
property, except that each party hereto shall be liable to the other party for
damage resulting from the acts or omissions of the other party or such other
party's authorized representative.

                                       13
<PAGE>   15
12.  DAMAGE OR DESTRUCTION

     12.1   Partial Damage.  If the Premises or any portion of the Building or
Land required by Tenant to use the Premises as intended shall be partially
damaged by fire or other cause, the damages shall be repaired by and at the
expense of Landlord and the Rent until such repairs shall be made shall be
apportioned according to the part of the Premises which is unusable by Tenant.
No liability shall accrue for reasonable delay which may arise by reason of
adjustment of insurance on the part of Landlord or Tenant, for reasonable delay
on account of "labor troubles," or any other cause beyond Landlord's control;
provided, however, Tenant shall have the option thereafter to terminate this
Lease if such partial damage is not fully repaired within one hundred eighty
(180) days from the date of such damage. In the event Tenant desires to
exercise its right of termination set forth above, Tenant shall notify Landlord
in writing within thirty (30) days after the passage of the 180th day from the
date of such damage.

     12.2   Total Damage.  If the Premises are totally damaged or are rendered
wholly untenantable by fire or other cause, and Landlord shall decide not to
restore or rebuild the same, or if the Building shall, in Landlord's and
Tenant's reasonable judgment, be so damaged that Landlord shall decide to
demolish it and rebuild it, then in any of such events either party may, within
ninety (90) days after such fire or other cause, give the other party notice of
such decision, and thereupon this Lease shall expire by lapse of time upon the
third day after such notice is given, and Tenant shall vacate the Premises and
surrender the same to Landlord.

     12.3   Limitation on Replacement Costs.  Notwithstanding anything
contained in Section 12.1 to the contrary, if the casualty causing such loss,
damage or destruction is not covered by the insurance required to be maintained
by Landlord pursuant to the terms of this Lease, Landlord shall not be required
to spend for any repair, replacement or reconstruction of the Premises or the
Building more than an amount equal to ten percent (10%) of the total
replacement cost of the Building.

     12.4   Waiver.  The provisions of this Lease, including this Article 12,
constitute an express agreement between Landlord and Tenant with respect to any
and all damage to, or destruction of, all or any part of the Premises, the
Building or any other portion of the Land, and any statute or regulation of the
State of California, including, without limitation, Sections 1932(2) and
1933(4) of the California Civil Code, with respect to any rights or obligations
concerning damage or destruction in any absence of an express agreement between
the parties, and any similar statute or regulation, now or hereafter in effect,
shall have no application to this Lease or to any damage to or destruction of
all or any part of the Premises, the Building or any other portion of the Land.

     12.5   Landlord shall not be required to insure against or repair any
injury or damage by fire or other cause, or to make any restoration or
replacement of any items of Tenant's personal property installed in the
Premises by Tenant or at the direct or indirect expense of Tenant. Tenant shall
be required at Tenant's sole cost and expense, separately to insure the same
and promptly to restore or replace same in the event of damage. Except for

                                       14
<PAGE>   16
any abatement of Rent relating to the plan of restoration of damage for which
Landlord is obligated to repair hereunder, Tenant shall have no claim against
Landlord for any damage suffered by reason of any such damage, destruction,
repair or restoration; nor shall Tenant have the right to terminate this Lease
as the result of any statutory provision now or hereafter in effect pertaining
to the damage and destruction of the Premises, except as expressly provided
herein.

      12.6   Anything herein to the contrary notwithstanding, if the Premises
or the Building is destroyed or materially damaged during the last twelve (12)
months of the Term, then either Tenant or Landlord may, at their option, by
giving written notice thereof to the other within twenty days of such
destruction or damage, cancel and terminate this Lease as of the date of the
occurrence of the damage. If neither Tenant nor Landlord elects to terminate
this Lease, the repair of the damage shall be governed by the other provisions
of this Lease. If this Lease is terminated, Landlord may keep all the insurance
proceeds resulting from the damage, except for the proceeds which specifically
insured Tenant's personal property.

13.   EMINENT DOMAIN

      13.1  Total Taking. If the whole Building shall be taken or condemned for
all or any portion of the term by any competent authority for any public or
quasi public use or purpose, or transferred by agreement in connection with
such public or quasi public use or purpose with or without any condemnation
action or proceeding being instituted (collectively, a "Taking" or
"Condemnation"), then, the Term shall terminate as of the date when the
possession of the Building shall be required for such use or purpose, and
without apportionment of the award, such that the entire award is paid to
Landlord. Nothing contained herein shall be deemed to give Landlord any
interest in, or to require Tenant to assign to Landlord, any award made to
Tenant specifically for its relocation expenses, the taking of personal
property and fixtures belonging to Tenant, or the interruption of or damage to
Tenant's business if such award is made separately to Tenant and not as part of
the damages recoverable by Landlord.

      13.2  Partial Taking. If any portion of the Premises is taken by
Condemnation, this Lease shall remain in effect, except that Tenant shall have
the right to elect to terminate this Lease if the remaining portion of the
Premises is rendered inaccessible or unusable to Tenant or is not adequate space
for Tenant's purposes. If any part of the Land is taken by Condemnation, this
Lease shall remain in full force and effect so long as there is no material
interference with the access to the Premises. If such a taking materially
interferes with access to the Premises, either party shall have the election to
terminate this Lease. Termination shall be permitted if written notice thereof
is given, by the party terminating, to the other party, within thirty days of
the notice of the date possession will actually be taken by the condemning
authority.

      13.3  Restoration. If there is a partial taking of any portion of the
Premises and this Lease remains in full force and effect pursuant to this
Article 13, Landlord, at its cost, shall accomplish all necessary restoration
so that the balance of such portion of the Premises is returned as near as
practical to their condition immediately prior to the date of Taking.

                                       15
<PAGE>   17
     13.4 Temporary Taking. If all or any portion of the Premises is condemned
or otherwise taken for public or quasi-public use for a limited period of time,
this Lease shall remain in full force and effect and Tenant shall continue to
perform all terms, conditions and covenants of this Lease; provided, however, in
the extent such temporary taking continues for more than six months, Tenant
shall have the right to terminate this Lease. Tenant shall be entitled to
receive the entire award made in connection with any such temporary condemnation
or other taking.

14.  SERVICES

     14.1 Services. From and after the Commencement date Landlord shall:

          14.1.1    Provide automatic elevator facilities twenty four hours a
day, seven days a week.

          14.1.2    On normal business days (M-F) from 8AM to 6PM ventilate the
Premises and furnish heating or cooling as required for the Tenant's comfortable
use and normal occupancy of the premises with temperatures between the range of
68 F dry bulb and 76 F dry bulb. If Tenant desires to have the HVAC system
active during times over and above normal business hours as herein defined,
Tenant shall pay the reasonably related increase in HVAC maintenance and repair
costs. Within sixty calendar days of any billing for increased maintenance or
repair expenses due to use of the HVAC system beyond normal business hours, the
parties shall agree on an allocation to cover such additional use. Absent
agreement Landlord and Tenant shall submit the allocation issue to binding
arbitration before an arbitrator to be selected mutually with experience in HVAC
system maintenance. Additionally Tenant shall be required to reimburse Landlord
for any maintenance and/or repair costs associated with any HVAC equipment
installed by the Tenant.

          14.1.3    Provide electricity for lighting and normal office business
machines, including, without limitation, computers, electronic data processing
and ancillary equipment.

          14.1.4    Furnish water for drinking and lavatory purposes.

          14.1.5    Cause the Premises to be kept clean and neat in accordance
with the janitorial specifications set forth in Exhibit C attached hereto.

          14.1.6    Install, at Landlord's expense, replacement standard
fluorescent bulbs, standard incandescent light bulbs, and ballasts as needed in
the Premises based on normal business hour usage. Tenant shall be responsible
for reimbursement of Landlord annually for the cost of replacement of any
special lighting including, but not limited to compact fluorescent lights or
halogen lights should Landlord undertake, at Tenant's request to make such
replacements.

                                       16
<PAGE>   18
          14.1.7     Maintain the parking lot in a first class condition, which
shall include, without limitation, regular sweeping so as to keep the parking
lot generally free of trash and rubbish, patch and repair paving as necessary,
and maintain the striping.

          14.1.8    Maintain all landscaping and walkways in a first class
condition, which shall include, without limitation, maintaining healthy
vegetation, the removal of dead or deceased vegetation and the replacement
thereof and the regular sweeping and cleaning of walkways and plazas so as to
keep such walkways and plazas generally free of trash and rubbish.

     14.2 Costs of Services. Except for the cost of gas and electricity for the
Building, which shall be the responsibility of Tenant, all services shall be
performed at the sole cost and expense of Landlord. In the event Tenant
occupies the Building or Premises prior to the Commencement Date, whether for
business purposes or construction, Tenant shall be responsible for all costs of
electricity and gas it utilizes during said period. With respect to allocation
of gas, which is not separately metered for Tenant's Premises, it is understood
that Tenant's allocated share shall be 64.4% of the obligation. With respect to
electricity, which is not separately metered for the Premises to be occupied on
the first floor, the Tenant's allocable share shall be 26.2%.

     14.3 Cessation of Services. Landlord shall notify Tenant in writing at
least twenty-four (24) hours before any intentional shut-down of electrical
power or HVAC serving the Premises of which Landlord has knowledge, except in
the case of an emergency. Notwithstanding any terms of this Lease to the
contrary, if any Building service is interrupted for a period of one day due to
the active negligence or willful acts of Landlord, its agents, servants,
employees, contractors or subcontractors and such failure adversely and
materially effects Tenant's use of the premises for Tenant's normal business
operations, or for a period of three (3) consecutive days due to any other
reason (other than the misuse, negligence or willful act of Tenant), and such
failure adversely and materially effects Tenant's use of the Premises for
Tenant's normal business operations, then there shall be an abatement on a
usable square footage pro rata basis of Rent from and after said first or
third day, as the case may be, until such services are restored. Landlord
agrees to use its best efforts to restore such services as soon as possible. In
the event that Landlord fails to initiate and thereafter diligently prosecute
curative actions (to the extent Landlord has the ability to take curative
actions beyond giving notice to applicable parties or utilities) within eight
(8) business hours following receipt by Landlord (or Landlord's managing agent)
of written notice from Tenant of any such service interruption. Tenant shall
have the right to immediately exercise Tenant's self-help rights and remedies
pursuant to Section 19 below without providing Landlord with any other or
further cure period.

15.  ACCESS TO PREMISES

Subject to the terms of Section 8 with respect to repairs and Section 14 with
respect to services, Tenant shall permit Landlord to use and maintain pipes and
conduits in and through the Premises; provided, such pipes and conduits are
concealed above the ceiling, beneath the floor or behind the demising walls,
and do not interfere with Tenant's use of the Premises. Landlord shall have the
right to enter the Premises at reasonable hours upon at least twenty-four (24)
hours

                                       17
<PAGE>   19
advance written notice (except in the case of emergency) and in the
accompaniment of a representative of Tenant to examine the same and to make
such repairs required of Landlord hereunder and Landlord shall be allowed to
take all material into and upon the Premises that may be required therefor
without the same constituting an eviction of Tenant in whole or in part;
provided, any such entry is strictly of a temporary nature. In the event any
such entry by Landlord renders the Premises untenantable for more than two (2)
consecutive days, the Rent shall abate from and after said second day for so
long as said entry renders the Premises untenantable. Landlord is expressly
granted permission to show the Premises at any reasonable time upon at least
twenty-four (24) hours advance written notice to prospective tenants,
mortgagees, purchasers, lessees of the Building and other persons with a
business interest therein; provided, however, that Landlord shall only exhibit
the Premises to prospective tenants during the final six (6) months of Tenant's
occupancy of the Premises. Landlord agrees to use best efforts in connection
with any entry to minimize any interference with Tenant's business operations
and to protect Tenant's employees and property within the Premises, and Tenant
shall cooperate with such efforts. Landlord shall be responsible for any damage
to persons or property within the Premises caused by such entry by Landlord. If
Tenant shall not be personally present to open and permit an entry into the
Premises when for emergency reasons an entry therein shall be necessary,
Landlord may enter the same by a master key, or may forcibly enter the same,
without rendering Landlord liable therefor (if during such entry Landlord shall
accord reasonable care to Tenant's property), and without in any manner
affecting the obligations, terms, covenants, conditions, provisions or
agreements of this Lease. Nothing herein contained, however, shall be deemed or
construed to impose upon Landlord any obligation, responsibility or liability
whatsoever, for the care, supervision or repair of the Land, the Building, or
the Premises, or any part thereof, other than as otherwise provided in this
Lease.

16.   INSURANCE

      16.1  Tenant's Insurance. Tenant shall carry at its expense and maintain
in force during the term the following insurance:

            16.1.1  Commercial General Liability Insurance (including
protective liability coverage on operations of independent contractors engaged
in construction and also blanket contractual liability insurance) on an
"occurrence" basis for the benefit of Tenant and Landlord as named insured
against claims for "personal injury" liability, including, without limitation
bodily injury, death or property damage liability with a limit of not less than
$2,000,000.00 in the event of "personal injury" to any number of persons or of
damages to property arising out of any one "occurrence" in connection with
Tenant's use of the Property. Such insurance may be furnished under a "primary"
policy and an "umbrella" policy, provided that it is primary insurance and not
excess over or contributory with any insurance in force for Landlord; and

            16.1.2  Insurance against loss or damage by fire and such other
risks and hazards as are insurable under present and future standard forms of
fire and extended coverage insurance policies, to the personal property,
furniture, and furnishings belongs to Tenant

                                       18
<PAGE>   20
located in the Premises for not less than 100% of the actual replacement value
thereof.

          16.1.3    Landlord makes no representation that the limits of
liability specified to be carried by Tenant under the terms of this Lease are
adequate to protect Tenant or Landlord, and in the event Tenant believes that
any such insurance coverage called for under this Lease is insufficient, Tenant
shall provide, at its own expense, such additional insurance as Tenant deems
adequate.

     16.2 Landlord's Insurance. Landlord shall maintain all risk property
insurance covering loss of or damage to the Property including tenant
improvements and subsequent alterations, but excluding Tenant's personal
property) in the full amount of its replacement cost. Such policies shall
provide protection (subject to reasonable deductibles) against all perils
included within the classification of fire, extended coverage, vandalism,
malicious mischief, special extended perils (all risk), and sprinkler leakage.
The proceeds of such insurance received by Landlord shall be applied toward the
restoration or replacement of the items to which they relate if Landlord is
required to restore under the Lease. In addition, Landlord shall maintain a
policy of commercial general liability insurance with a combined single limit of
not less than $1,000,000 CSL per occurrence for bodily injury and property
damage, with no policy general aggregate or for policies containing aggregate
limits, $1,000,000 each occurrence, plus coverage against such other risks
Landlord deems advisable from time to time, insuring Landlord against liability
arising out of the ownership, use, occupancy or maintenance of the Property and
insuring, if available, the performance by Landlord of Landlord's indemnity
provisions of this Lease.

     16.3 Policies. All insurance required of Tenant by the Lease shall name
Landlord as additional insured, shall be effected under policies issued by
insurers licensed to do business in the State of California and with a rating of
at least AA by Duff & Phelps, Moody's or Standard & Poors and shall provide that
Landlord shall receive thirty (30) days' written notice from the insurer prior
to any cancellation, diminution or material change of coverage. Landlord and
Tenant shall each deliver policies of insurance or certificates required by the
Lease to the other on or before the Commencement Date, and thereafter at least
thirty (30) days before the expiration dates of expiring policies; and, in the
event either party shall fail to procure such insurance or to deliver such
policies or certificates, the other party may, at its option, procure the same,
and the cost thereof shall be paid to by the other party within ten (10) days
after delivery of bills therefor.

     16.4 Subrogation. Notwithstanding any other term or provision of this Lease
to the contrary, Landlord and Tenant hereby, conditioned upon the approval of
their respective insurers in the form of a waiver of subrogation, both release
the other and their respective employees, agents, servants, licensees and
invitees from and waive any claims either may have against the other or their
employees, agents, servants, licensees or invitees for any loss or damage to the
Building, Premises, improvements on or to the Building, Premises, or to the
contents of the foregoing and any personal property stored or placed thereon by
either of them caused by any of the perils insured against under insurance
required by the Lease, whether such damage or loss

                                       19
<PAGE>   21
was caused by the negligence of either of them or their respective employees,
agents, servants, invitees or licensees. The foregoing mutual release and waiver
of subrogation shall apply whether or not such insurance on the Building,
Premises, improvements, contents and/or personal property was in force at the
time of the loss or damage. Moreover, each party agrees to take commercially
reasonable actions necessary to obtain the waiver of subrogation required to
make the foregoing release effective.

17.  SECURITY

     Tenant, at its expense, may install in or to the Premises such safety and
security systems or devices, including, without limitation, locked documentation
rooms, tape and disk vaults, smoke detectors, electronic security devices and
auxiliary emergency electric power supplies, as Tenant may deem appropriate.
Tenant shall have the right by installation of a key system or otherwise, to
control access to the Premises; provided that Tenant shall afford Landlord
access to the Premises so as to allow Landlord to provide services or perform
any work under this Lease or as otherwise may be required in an emergency.

18.  TENANT DEFAULT

     18.1 Definition of Tenant Default. The occurrence of any of the following
shall constitute an "Event of Default" by Tenant:

          18.1.1    Tenant's failure to make any payment owed by Tenant under
this Lease, as and when due, where such failure is not cured within ten days
following Tenant's receipt of Landlord's written notice thereof; or

          18.1.2    Tenant's failure to observe, keep, or perform any of the
terms, covenants, agreements, or conditions under this Lease that Tenant is
obligated to observe or perform, other than that described in paragraph (a)
above, for a period of thirty (30) days after delivery of notice to Tenant of
said failure; provided however, that if the nature of Tenant's failure is such
that more than thirty (30) days are reasonably required for its cure, then
Tenant shall not be deemed to be in default under this Lease if Tenant shall
commence the cure of such default so specified within said thirty (30) day
period and diligently prosecute the same to completion; or

          18.1.3    Filing by Tenant of a voluntary petition under any
applicable bankruptcy Law, or the issuance of an order for relief entered under
any applicable bankruptcy Law, or the filing by Tenant of any petition or answer
seeking any reorganization, arrangement, composition, readjustment, liquidation,
dissolution, or similar relief for Tenant under the present or any future
applicable Law relative to bankruptcy, insolvency, or other relief for debtors,
or Tenant's consent to or acquiescence in the appointment of any trustee,
receiver, conservator, or liquidator of Tenant or of all or any substantial part
of its properties or its interest in the Premises (the term "acquiesce," as used
in this clause, includes but is not limited to the failure to file a petition or
motion to vacate, appeal, or discharge any order, judgment, or decree within one
hundred twenty (120) days after entry of such order, judgment, or decree); or

                                       20
<PAGE>   22
          18.1.4  Issuance or entry, by a court of competent jurisdiction, of
any order, judgment, or decree approving a petition filed against Tenant
seeking any reorganization, arrangement, composition, readjustment, liquidation,
dissolution, or similar relief under any present or future applicable Law
relating to bankruptcy, insolvency, or other relief for debtors, and
acquiescense by Tenant in the entry of such order, judgment, insolvency, or
other relief for debtors, such order, judgment, or decree to be vacated or
stayed within one hundred twenty (120) days after the date of entry thereof; or
the appointment, without the consent or acquiescence of Tenant, of any trustee,
receiver, conservator, or liquidator of Tenant or of all or any substantial
part of its properties or its interest in the Premises and the failure of such
appointment to be vacated or stayed within one hundred twenty (120) days.

          18.1.5  Tenant shall have abandoned the Premises (as defined in and
following satisfaction of the requirements of Civil Code section 1951.3).

     18.2 Landlord's Remedies. Upon the occurrence of any Event of Default,
Landlord shall have the following remedies, which shall not be exclusive but
shall be cumulative and shall be in addition to any other rights and remedies
now or hereafter provided at law or in equity:

          18.2.1 Termination. Landlord may terminate Tenant's right to
possession of the Premises at any time by written notice to Tenant. Tenant
expressly acknowledges that in the absence of such written notice from
Landlord, no other act of Landlord, including, but not limited to, its
re-entry into the Premises, its efforts to relet the Premises, its reletting of
the Premises for Tenant's account, its acceptance of keys to the Premises from
Tenant or its exercise of any other rights and remedies under this Section,
shall constitute an acceptance of Tenant's surrender of the Premises or
constitute a termination of this Lease or of Tenant's right to possession of
the Premises. Upon such termination in writing of Tenant's right to possession
of the Premises, as herein provided, this Lease shall terminate and Landlord
shall be entitled to recover damages from Tenant as provided in California
Civil Code Section 1951.2 or any other applicable existing or future law,
ordinance or regulation providing for recovery of damages for such breach,
including but not limited to the following:

          18.2.1.1 The worth at the time of award of the unpaid rent which had
been earned at the time of termination;

          18.2.1.2 The worth at the time of 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;

          18.2.1.3 Subject to Subdivision (c) of the California Civil Code
Section 1951.2, 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; and

                                       21

<PAGE>   23
          18.2.1.4 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. The "worth" at the time of award of the amounts referred to
in this Section 18.2.1.1 and Section 18.2.1.2 shall be computed by allowing
interest at the Default Rate. The worth at the time of the award of the amount
referred to in Section 18.2.1.3 shall be 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%).

          18.2.1.5 Tenant's entitlement to redemption or relief from forfeiture
under California Code of Civil Procedure Sections 1174 and 1179, or under any
other present or future law, in the event Tenant is evicted or Landlord takes
possession of the Premises by reason of any default of Tenant hereunder is
conditioned upon Tenant's payment at the time of application therefore, to
Landlord of such sums, in addition to those required by said sections, as will
reimburse Landlord for all attorneys fees expended in any action preceding such
application by which possession was obtained by Landlord, and any charges, late
fees or penalties, including interest, paid by Landlord or any mortgagee as a
result of the Tenant's monetary default(s). It is the objective of this
provision to preserve Tenant's rights of redemption or relief from forfeiture
only if in so doing Landlord suffers no monetary loss as a direct consequence
of the default which precipitated the judgment from which Tenant seeks relief.

          18.2.2 Non-Termination. Landlord has the remedy described in
California Civil Code Section 1951.4 (Landlord may continue this Lease in
effect after Tenant's breach and abandonment and recover rent as it becomes
due, if Tenant has the right to sublet or assign, subject only to reasonable
limitations). During the continuance of an Event of Default, Landlord may enter
the Premises without terminating this Lease and sublet all or any part of the
Premises for Tenant's account to any person, for such Term (which may be a
period beyond the remaining term of this Lease), at such rents and on such
other terms and conditions as Landlord deems advisable. In the event of any
such subletting, rents received by Landlord from such subletting shall be
applied (i) first, to the payment of reasonable costs of maintaining,
preserving, altering and preparing the Premises for subletting and other
reasonable costs of subletting, including, broker's commissions and attorneys'
fees; (ii) second, to the payment of rent then due and payable; (iii) third, to
the payment of future rent as the same may become due and payable hereunder;
and (iv) fourth, the balance, if any, shall be paid to Tenant upon (but not
before) expiration of the Term. If the rents received by Landlord from such
subletting, after application as provided above, are insufficient in any month
to pay the rent due and payable hereunder for such month, Tenant shall pay such
deficiency to Landlord monthly upon demand. Notwithstanding any such subletting
for Tenant's account without termination, Landlord may at any time thereafter,
by written notice to Tenant, elect to terminate this Lease by virtue of a
previous Event or Default.

                                       22

<PAGE>   24
19.     LANDLORD'S DEFAULT

        19.1    Landlord's Default.

        If Landlord shall fail to keep or perform any of its obligations under
this Lease with respect to the making of any payment to Tenant or the
performance of any other obligation of Landlord under this Lease, and upon the
continuance of such failure on Landlord's part for thirty (30) days after the
receipt by Landlord and any holder of any mortgage or the beneficiary of any
deed of trust secured by the Property ("Mortgagee") of written notice of such
failure from Tenant (provided, however, that in the case of any such failure
which cannot reasonably be cured within thirty (30) days, Landlord (and/or
Mortgagee) shall be allowed such additional period as may be reasonably required
by Landlord (and/or Mortgagee) to cure such failure with due diligence, provided
Landlord (and/or Mortgagee) begins to cure such default within such thirty (30)
day period and thereafter diligently and continuously pursues said cure to
completion), and without waiving or releasing Landlord from any obligation, then
Tenant may (but shall not be obligated to): (a) terminate this Lease without
incurring any termination fee if Tenant's use of the Premises for normal
business operations is materially and adversely affected as a consequence of
such failure on the part of Landlord, or (b) make such payment, or Tenant may
perform such obligation and all sums actually paid or incurred by Tenant and all
necessary and incidental costs and expenses, including reasonable attorney's
fees incurred by Tenant in making such payment or performing such obligation,
together with interest thereon at the Default Rate, from the date of payment by
Tenant, date payment was due to Tenant or date a cost was incurred by Tenant,
shall be paid by Landlord to Tenant within thirty (30) days after demand, and,
if not so paid by Landlord, Tenant shall have the right to offset such sums
against any Rent or other amounts thereafter payable by Tenant under this Lease,
or (c) Tenant may pursue any other remedies available to Tenant at law or in
equity to collect payment and/or cause Landlord to cure such default. The
foregoing remedies of Tenant shall be cumulative.

20.     END OF TERM

        Upon the expiration or other termination of the term, Tenant shall quit
and surrender to Landlord the Premises, broom clean, in as good order, condition
and repair as it now is or may hereafter be placed, with all damage due to the
removal of Tenant's fixtures and personal property repaired, ordinary wear and
tear and damage by casualty excepted. Tenant shall remove all property of
Tenant. Any property left on the Premises at the expiration or other termination
of this Lease, or after the happening of an Event of Default set forth in
Article 18, may, at the option of Landlord, either be deemed abandoned or be
placed in storage at a public warehouse in the name of and for the account of
and at the expense and risk of Tenant or otherwise disposed of by Landlord in
the manner provided by law.

        21.     HOLDING OVER

        If Tenant holds possession of the Premises after expiration of the Term,
Tenant shall become a tenant from month to month upon the terms herein specified
at a monthly rental

23
<PAGE>   25
equivalent to 125% of the then prevailing Rent paid by Tenant at the expiration
of the Term.

22.  QUIET POSSESSION

     Landlord covenants and agrees with Tenant that upon Tenant's paying Rent
and all other charges and observing and performing all of the terms, covenants,
conditions, provisions and agreements of this Lease on Tenant's part to be
observed or performed, Tenant shall have quiet possession of the Premises for
the term subject, however, to the terms of this Lease and of any ground leases,
underlying leases, mortgages and deeds of trust affecting all or any portions
of the Building or any of the areas used in connection with the operation of
the Building.

23.  TERMINATION, NO ORAL CHANGE

     In the event that this Lease terminates for any reason (including but not
limited to termination by Landlord) prior to its natural expiration date, such
termination will effect the termination of any and all agreements for the
extension of this Lease (whether expressed in an option, exercised or not, or
collateral document or otherwise); any right herein contained on the part of
Landlord to terminate this Lease shall continue during any extension hereof,
and any option on the part of Tenant herein contained for an extension hereof
shall not be deemed to give Tenant any option for a further extension beyond
the extended term in which the Lease was terminated. Except as provided by law,
an interruption or curtailment of any services shall not constitute a
constructive or partial eviction or except as provided herein, entitle tenant
to any abatement or rent or any compensation (including but not limited to
compensation for annoyance, inconvenience or injury to business). No act or
thing done by Landlord or Landlord's agents during the term shall be deemed an
acceptance of a surrender of the Premises, and no agreement to accept such
surrender shall be valid unless in writing signed by Landlord. The failure of
Landlord to seek redress for violation of, or to insist upon the strict
performance of any term, covenant, condition, provision or agreement of this
Lease, shall not prevent a subsequent act, which would have originally
constituted a violation, from having all the force and effect of an original
violation. The receipt by Landlord of rent with knowledge of the breach of any
term, covenant, condition, provision or agreement of this Lease, shall not be
deemed a waiver of such breach. This Lease contains the entire agreement
between the parties, and recites the entire consideration given and accepted by
the parties. Any agreement hereafter made shall be ineffective to charge,
modify, waive or discharge it in whole or in part unless such agreement is in
writing and signed by the party against whom enforcement of the change,
modification, waiver or discharge is sought. Tenant acknowledges that any
amendment or modification of this Lease requires the consent of the Mortgagee,
(which Landlord represents Mortgagee has agreed or will agree not to
unreasonably withhold); provided, however, Landlord hereby agrees that Landlord
and not Tenant shall be responsible for seeking Mortgagee's consent to any such
amendment or modification to this Lease.

                                       24

<PAGE>   26
24.  BILLS AND NOTICES

     All notices, notifications, demands, requests, consents, approvals,
designations, elections, and waivers that may or are required to be given by
either party to the other hereunder shall be in writing and shall be deemed to
have been duly received when delivered personally, or one business day after
such notice or demand is sent by a reliable overnight courier service, or three
(3) business days after it is sent by United Stated certified or registered
mail, in each case with postage prepaid and the notice or demand addressed to
the other party at its address set forth below, or to such other place as such
party may from time to time by like notice designate:

          Landlord:           Joe Shekou and Haidy Shekou
                              2173 D Francisco Boulevard
                              San Rafael, California 94901

          Tenant:             Autodesk, Inc.
                              111 McInnis Parkway
                              San Rafael, California 94903
                              Attention: Director of Corporate Real Estate

          With a copy to:     Autodesk, Inc.
                              111 McInnis Parkway
                              San Rafael, California 94903
                              Attention: General Counsel

25.  TAX ON TENANTS PERSONAL PROPERTY

     At least ten (10) days prior to delinquency Tenant shall pay all taxes
levied or assessed upon Tenant's equipment, furniture, fixtures and other
personal property located in or about the Premises. If the assessed value of
Landlord's property is increased by the inclusion therein of a value placed upon
Tenant's equipment, furniture, fixtures or other personal property, Tenant shall
pay to Landlord, upon written demand, the taxes so levied against the Landlord,
or the proportion thereof resulting from said increase in assessment.

26.  SECURITY DEPOSIT

     Tenant shall not be required to provide a security deposit to Landlord.

                                       25

<PAGE>   27
27.  MARGINAL NOTES

     The marginal notes and headings are inserted only as a matter of
convenience and for reference and in no way define, limit or describe the scope
or intent of this Lease nor do they in any way affect this Lease.

28.  TERMS AND DEFINITIONS

     The term "Landlord" as used in this Lease means only the owner or the
mortgage in possession or grantee in possession under a deed of trust, or the
owner of the Lease of the Building for the time being, so that in the event of
any sale or sales of said land and/or Building or of said Lease, or in the
event of a lease of said land and/or Building, the same Landlord shall be and
hereby is entirely freed and relieved of all covenants and obligations of
Landlord hereunder incurred after the date of such sale; provided, however, the
successor-in-interest to Landlord assumes in writing all of such obligations.
Tenant hereby acknowledges that Landlord may transfer its interest in the
Property to Joe Shekou and Haidy Shekou as co-trustees of the J.H.S. Trust. The
words "re-enter" and "re-entry" as used in this Lease are not restricted to
their technical legal meaning.

29.  BROKERAGE

     Except with respect to Colliers Advisory Group, which Landlord hereby
agrees to pay a commission in accordance with the agreement attached hereto as
Exhibit D, each party hereto agrees to indemnify and hold the other party
harmless from any claim or claims, including costs, expenses and attorney's
fees incurred by the other party, asserted by any broker or finder for a fee or
commission based upon any dealings with or statements made by such indemnifying
party or its representatives.

30.  BINDING EFFECT

     All of the terms, conditions, provisions and agreements of this Lease shall
be deemed to be covenants. The covenants contained in this Lease shall bind and
inure to the benefit of Landlord and Tenant and their respective legal
representatives and successors, and, except as otherwise provided in this
Lease, their assigns.

31.  ATTORNEYS' FEES

     In the event either party requires the services of an attorney in
connection with enforcing the terms of this Lease (including an action or
proceeding between one party and the trustee or debtor in possession while the
other party is a debtor in a proceeding under the Bankruptcy Code (Title 11 of
the United States Code or any successor statute to such Code), or in the event
suit is brought for the enforcement of any of the terms hereof or for the
recovery of any amount due and owing hereunder, the prevailing party shall be
entitled to recover all its costs and expenses in connection therewith
(including court costs and reasonable attorneys' fees, costs and

                                       26

<PAGE>   28
disbursements) from the other party.

32.  ESTOPPEL CERTIFICATES

     Within ten days following either party's prior written request from time to
time, the other party shall execute, acknowledge and deliver to the requesting
party a statement in writing certifying to those facts for which certification
has been requested, including without limitation (a) that this Lease is
unmodified and in full force and effect or, if modified, adequately identifying
such modification and certifying that this Lease, as so modified, is in full
force and effect) and (b) the date to which Rent, additional payments and other
charges are paid and (c) whether or not there is any default by Landlord or
Tenant in the performance of any term, covenant, condition, provision or
agreement contained in this Lease and further whether or not there are any
setoffs, defenses or counterclaims against enforcement of the obligations to be
performed under this Lease and, if there are, specifying such default, setoff,
defense or counterclaim. Any such statement may be conclusively relied upon by
any prospective purchaser, lessee, assignee or encumbrancer of the Premises or
of all or any portion of the Building or the Land. A party's failure to deliver
such statement within such time shall be deemed a statement that this Lease is
in full force and effect, without modification except as may be represented by
the requesting party.

33.  Right of First Offer. Tenant shall have an on-going right of first offer,
exercisable at any time during the Term when space becomes available, to lease
such space. Tenant shall only have the right of first offer to lease such space
during the periods the space is not otherwise leased and not otherwise
unavailable. If such space is then subject to any options to extend granted to
tenants thereof or the leasing of such space is otherwise extended or renewed or
otherwise leased by any existing tenant thereof, it shall be deemed unavailable.
The right of first offer granted under this Paragraph 33 shall be exercisable by
Tenant as to such space upon delivery by Landlord to Tenant of a proposal
("Landlord's Lease Proposal") for such space setting forth the principal
economic terms (e.g. length of term, rent, tenant improvement allowance, if any)
upon which Landlord is then willing to lease such space. Tenant shall have ten
(10) business days after Landlord's delivery of Landlord's Lease Proposal to
notify Landlord of Tenant's agreement to lease all of such space ("Tenant
Acceptance Notice") on all of the terms set forth in Landlord's Lease Proposal.
If Tenant does not give Landlord Tenant's Acceptance Notice within the
applicable period, or, if Tenant gives to Landlord Tenant's Acceptance Notice
within the applicable period but Tenant does not, within five (5) business days
thereafter, execute a lease for all of such space, upon the terms specified in
this Paragraph 33, Landlord shall have the right to lease such space to
person(s) other than Tenant on any terms Landlord desires and without offering
or further offering, as applicable, such space to Tenant. Notwithstanding the
foregoing, Tenant shall not have the right of first offer under this Paragraph
33 if Tenant is in material default under this Lease at the time such space
becomes available (and Landlord shall have no obligation to submit any
Landlord's Lease Proposal) nor shall Landlord be obligated to lease such space
if Tenant is in material default under this Lease at the time Tenant is to
commence occupancy of such space.

                                       27
<PAGE>   29
34.  MISCELLANEOUS

     34.1 Governing Law. This Lease shall be governed by and construed in
accordance with California law.

     34.2 Severability. In the event any term, condition, provision and
agreement herein contained is held to be invalid or void by any court of
competent jurisdiction, the invalidity of any such term, covenant, provision or
agreement shall in no way affect any other term, covenant, condition, provision
or agreement herein contained.

     34.3 Authority. Each of the persons executing this Lease on behalf of
Landlord and Tenant warrants that Landlord or Tenant, as the case may be, is a
duly authorized and existing corporation, that it has been and is qualified to
do business in California, that it has full right and authority to enter into
this Lease, and that each of the persons signing on behalf of Landlord and
Tenant, as the case may be, were authorized to do so.

     34.4 Exhibits and Addenda. Any exhibits or addenda annexed hereto is made a
part hereof.

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

LANDLORD:                     TENANT:

                              AUTODESK, INC.,
/s/ JOE SHEKOU                a Delaware corporation
-----------------------
    Joe Shekou

                              By: /s/ CAROL BARTZ
/s/ HAIDY SHEKOU                  -----------------------------
-----------------------       Its: Chairman and CEO
Haidy Shekou                  and

                              By:
                                  -----------------------------
                              Its:
                                  -----------------------------

                                       28

<PAGE>   30

                                  EXHIBIT "A"

                                  DESCRIPTION

All that certain real property situate in the City of San Rafael, County of
Marin, State of California, described as follows:

PARCEL 1 as shown upon "Parcel Map of Civic Center North being a resubdivision
of Parcel 1-Civic Center North-23 PM 52-Lands of Gos Joint Venture" filed for
record January 9, 1989 in Volume 24 of Parcel Maps at Page 43, Marin County
Records.

<PAGE>   31
                                  EXHIBIT "B"

                                1ST  FLOOR PLAN

                                  CIVIC PLACE

                            [Intentionally omitted.]
<PAGE>   32
                                  EXHIBIT "B"

                                 2ND FLOOR PLAN

                                  CIVIC PLACE

                            [Intentionally omitted.]
<PAGE>   33

                                  EXHIBIT "C"

             Janitorial Specifications - Performance Specifications

                            [Intentionally omitted.]

<PAGE>   34

                                  EXHIBIT "D"

                            [Intentionally omitted.]

<PAGE>   35
                             CONSTRUCTION ADDENDUM

     This Construction Addendum ("Addendum") is being entered into on June __,
1998, between JOE SHEKOU AND HAIDY SHEKOU, husband and wife ("Landlord"), and
AUTODESK, INC., a Delaware corporation ("Tenant"), in connection with the
execution of the Lease between Landlord and Tenant of even date herewith for
premises located at 1 McInnis Parkway, San Rafael, California ("Lease"), who
hereby agree as follows:

     1.   General.

          (a) The purpose of this Addendum is to set forth how the Building and
the Tenant Improvements (as defined in Section 7 below) in the Premises are to
be constructed, who will undertake the construction of the Building and the
Tenant Improvements, who will pay for the construction of the Building and the
Tenant Improvements, and the time schedule for completion of the construction
of the Building and the Tenant Improvements.

          (b) Except as defined in this Addendum to the contrary, all terms
used in this Addendum shall have the same meaning given them in the Lease. When
work, services, consents or approvals are to be provided by or on behalf of
Landlord, the term "Landlord" shall include Landlord's agents, contractors,
employees and affiliates.

          (c) The provisions of the Lease, except where clearly inconsistent or
inapplicable to this Addendum, are incorporated into this Addendum.

     2.   Base Building Shell and Site Work.  Landlord is obligated to
substantially complete the base building work ("Base Building Shell") for the
Building (except for the items listed on Schedule 1) prior to delivering
possession of the Premises to Tenant. The Base Building Shell shall be in
compliance with all laws and the heating, ventilating and air conditioning
systems shall be in compliance with the applicable ASHRAE standards. As of the
date hereof, Landlord has completed the majority of the Base Building Shell;
however, Landlord shall complete the items listed on Schedule 1 prior to the
Commencement Date. The items to be completed as identified on Schedule 1 shall
be completed in accordance with a schedule to be provided by Tenant to Landlord
from time to time, and in the event Landlord fails or asserts an inability to
complete such items pursuant to such schedule, Tenant may complete the item
itself and Landlord shall reimburse Tenant for the costs incurred therefore upon
billing. Promptly following the delivery of possession of the Premises to
Tenant, Landlord and Tenant shall perform a mutual walk-through of the Premises
and the Building to develop a "punchlist" of items not completed satisfactorily
in the Base Building Shell. Landlord shall be obligated to correct the items set
forth on the punchlist within thirty (30) days of such walkthrough.

<PAGE>   36
     3.   Schedule of Work.

          (a)  Construction Period. Pursuant to the terms of Section 3 of the
Lease, Tenant shall have 120 calendar days (the "Construction Period") to
complete the Tenant Improvements. The Construction Period, and Tenant's
obligation to pay Rent under the Lease, shall be extended by one (1) business
day for each day the Tenant is delayed in completing the Tenant Improvements and
installing its furniture, fixtures, and equipment and personal property due to
any Force Majeure Delay and/or Landlord Delay.

          (b)  Delivery of Base Building Shell. The delivery of the Base
Building Shell shall be deemed to have occurred when Landlord completes the work
comprising the Base Building Shell and delivers to Tenant uninterrupted access
to the Building so as to enable Tenant to construct the Tenant Improvements. The
parties hereby agree to execute a document specifying the date of delivery by
Landlord to Tenant of the Base Building Shell.

     4.   Preparation of Plans and Construction Schedule and Procedures. Tenant
shall arrange for the construction of the Tenant Improvements in accordance with
the following schedule:

          (a)  Selection of Tenant's Architect and Engineer. Tenant shall engage
Gensler & Associates as its architect ("Tenant's Architect") and Schwartz and
Lindhein and The Engineering Network as its engineers ("Tenant's Engineer").

          (b)  Approval of Working Drawings. Landlord hereby acknowledges that
it has approved Tenant's Working Drawings.

     5.   Permits. Tenant, at its sole cost shall be responsible for obtaining
all governmental approvals of the Final Plans to the extent necessary for the
issuance of a building permit for the construction of the Tenant Improvements.

     5.   Contractor and Review of Plans. Tenant shall engage CIC as its
contractor ("Contractor"). The Landlord approves Commercial Interior Contractors
as the Tenant Improvement Contractor. Tenant may enter into a construction
contract with the Contractor at a price agreed upon between Tenant and such
contractor.

     6.   Tenant Improvements. The term "Tenant Improvements" shall mean all
improvements shown in the Final Plans as integrated by the Tenant's Architect,
and, to the extent specified in the Final Plans, all signage, built-ins, related
cabinets, and all carpets and floor coverings, but, except as provided below,
Tenant Improvements shall not include any personal property of Tenant.

                                       2
<PAGE>   37
     7.   Tenant Improvement Allowance.

          (a)  Amount. Landlord will pay on behalf of Tenant the sum of five
hundred and fifty four thousand, nine hundred and fifty five dollars ($554,955)
("Tenant Improvement Allowance") over and above the items included in the Base
Building Shell, expendable for the costs of design and the construction of the
Tenant Improvements, including any amount paid to a project coordinator,
construction consultant, or similar consultant. In addition, Tenant may use the
Tenant Improvement Allowance for permits, any freestanding workstations,
reception desks, conference room tables, all telecommunication equipment and
related wiring, and furniture, fixtures, and/or equipment ("Permitted Items").

          (b)  Tenant's Cost. Any cost incurred in the design or construction of
the Tenant Improvements in excess of the Tenant Improvement Allowance shall be
borne by Tenant, in accordance with the terms and conditions set forth below.
Prior to the construction of the Tenant Improvements, Tenant shall cause its
general contractor to submit an estimate of the total cost of constructing the
Tenant Improvements. In the event that the aggregate of the cost estimated by
Tenant's general contractor and the cost of designing the Tenant Improvements
(collectively, the "Improvements Cost") exceeds the Tenant Improvement
Allowance, Landlord and Tenant shall determine Landlord's share of the
Improvements Cost ("Landlord's Share") and Tenant's share of the Improvements
Cost ("Tenant's Share") as follows:

               (i)  Landlord's Share shall be a fraction, the numerator of which
is the Tenant Improvement Allowance, and the denominator of which is the
Improvements Cost.

               (ii) Tenant's Share shall be a fraction, the numerator of which
is the portion of the Improvements Cost that exceeds the Tenant Improvement
Allowance, and the denominator of which is the Improvements Cost.

          (c)  Disbursement. Landlord shall pay within fifteen (15) days of
receipt of invoices, conditional lien releases and any other documents
reasonably required by Landlord and Landlord's construction lender, Landlord's
Share of each amount invoiced by Tenant. The Tenant Improvement Allowance shall
be disbursed by Landlord no more frequently than once every month pursuant to
requests for disbursement.

          (d)  Unused or Unfunded Amount. Any unused or unfunded portion of the
Tenant Improvement Allowance or the Additional Allowance (as defined in Section
9 below) shall be available to Tenant as a credit against the first due Rent.

                                       3
<PAGE>   38
     8.   Additional Allowances.  In addition to the Tenant Improvement
Allowance, Landlord will pay Tenant an amount equal to the actual cost to
develop AutoCAD drawings up to a maximum of $0.15 per Rentable Square Foot
("Additional Allowance"). The Additional Allowance shall be promptly paid by
Landlord to Tenant upon Landlord's receipt of Tenant's written demand
therefor, accompanied by, as applicable, invoices documenting and evidencing
such costs and expenses. Tenant shall deliver to Landlord two (disc) copies of
the drawings for which payment is being made.

     9.   Change Orders.  In the event that Tenant requests any changes to the
Final Plans, Landlord shall not unreasonably withhold its consent to any such
changes, and shall grant its consent to such changes within two (2) business
days after Landlord's receipt of same, provided the changes do not create a
Design Problem. Tenant shall be responsible for any cost of the changes above
the Tenant Improvement Allowance.

     10.  Delays.

          (a)  Force Majeure Delay.  As used herein, the term "Force Majeure
Delay" shall mean any delay which is attributable to any: (1) actual delay or
failure to perform attributable to any strike, lockout or other labor or
industrial disturbance (whether or not on the part of the employees of either
party hereto), civil disturbance, future order claiming jurisdiction, act of a
public enemy, war, riot, sabotage, blockade, embargo, inability to secure
customary materials, supplies or labor through ordinary sources by reason of
regulation or order of any government or regulatory body; (2) delay in
completing the Final Plans and/or the construction of the Tenant Improvements
because of changes in any Laws between the date hereof and the carrying out of
such plans; or (3) delay attributable to lightning, earthquake, fire, storm,
hurricane, tornado, flood, washout, explosion, or any other cause beyond the
reasonable control of the party from whom performance is required, or any of
its contractors or other representatives.

          (b)  Landlord Delay.  As used herein and in the Lease, the term
"Landlord Delay" shall mean any delay in the completion of the Tenant
Improvements which is due to any act or omission of Landlord (wrongful,
negligent or otherwise), its agents or contractors, including, without,
limitation: (1) delay in the herein described times for the giving of
authorizations or approvals by Landlord; (2) delay attributable to the acts or
failures to act, whether willful, negligent or otherwise, of Landlord, its
agents or contractors, where such acts or failures to act delay the completion
of the Tenant Improvements; (3) delay attributable to the interference of
Landlord, its agents or contractors during the Construction Period with the
completion of the Tenant Improvements or the failure or refusal of any such
party to permit Tenant, its agents or contractors, priority access

                                       4
<PAGE>   39
to and priority use of the Building or any Building facilities or services,
which access and use are required for the orderly and continuous performance of
the work necessary to complete the Tenant Improvements; (4) delay by Landlord in
administering and paying when due the Tenant Improvement Allowance and
Additional Allowance for in excess of seven calendar days.

     11.  No Fee to Landlord. Landlord shall receive no fee for supervision,
profit, overhead or general conditions in connection with the Tenant
Improvements.

     12.  Clean-Up Expenses. Except to the extent Tenant constructs portions of
the Tenant Improvements while Landlord is completing the Base Building Shell,
Landlord shall clean the Premises prior to delivering the Premises to Tenant
for the commencement of the construction of the Tenant Improvements. Following
Tenant's move into the Premises, Tenant shall clean the premises, including
removal of all rubbish and debris, except that Landlord shall clean windows and
glass doors.

     13.  Bonding. Notwithstanding anything to the contrary set forth in the
Lease, and unless required by Landlord's construction lender, Tenant shall not
be required to obtain or provide any completion or performance bond in
connection with any construction, alteration, or improvement work performed by
or on behalf of Tenant.

     IN WITNESS WHEREOF, the parties have entered into this Agreement as of the
date first written above.

LANDLORD:                            TENANT:

/s/ JOE SHEKOU                       AUTODESK, INC.,
-----------------------              a Delaware corporation
    Joe Shekou

/s/ HAIDY SHEKOU                     By: /s/ CAROL BARTZ
-----------------------                 -----------------------------
    Haidy Shekou                     Its:  Chairman & CEO
                                        -----------------------------

                                       5

<PAGE>   40
                                   Schedule 1

BASE BUILDING ITEMS TO BE
COMPLETED AFTER SHELL FINAL

The City of San Rafael issued the building shell completion letter on June 5,
1998. The building shall is complete to the satisfaction of the tenant with the
exception of certain items which have been postponed in order to minimize
damage caused by tenant construction work. These items, listed below, will be
completed by the Landlord at Landlord's sole expense and shall not be deducted
from the Tenant Improvement Allowance.

1.   Entry Lobby. The walls and ceiling of the tower lobby will be smooth
finished, sealed and painted. The floor will be finished with porcelain tile
pavers, the stairs will be carpeted. Downlights and sconce lighting will be
installed. An ornamental steel railing will be installed for the stairs and
along the second floor of the elevator lobby overlooking the entry lobby. There
shall be no small windows centered in the wall above the stairway. Sheetrock on
the tenant side of the lobby walls will be the responsibility of the Landlord.
Painting and floor work required under this Schedule by Landlord shall be
completed prior to the completion of Tenant Improvements. Tenant shall have
provided Landlord with a schedule for its completion of Tenant Improvements and
based upon that schedule Landlord shall commence this work no later than three
weeks in advance of scheduled completion. Tenant shall be responsible for the
cost of the repair or replacement made necessary due to damage caused by Tenant
or its agents or contractors during the work hereby required of Landlord.

2.   Elevator Lobby Common Area. First floor - this area consists of the public
space leading to the elevator and tenant entry, the elevator, and the elevator
equipment room. The lobby will have a painted sheetrock ceiling, and the lobby
floor will be carpeted. Second floor - this area consists of a public area
overlooking the two story entry lobby and the elevator and will have the same
floor covering and ceiling as the first floor. Down lights will be installed
in the sheetrock ceilings. Thermostat controlled HVAC shall be provided in both
lobby areas and within the elevator service room. Sheetrock on the tenant side
of the lobby walls shall be the responsibility of the Landlord.

3.   Restrooms. The porcelain tile restroom floors and walls will be sealed.
White laminate toilet partitions, accessories, granite counters, recessed
ceiling strip lighting, and all mechanical and plumbing services will be
installed. Untitled walls and ceilings are smooth sheetrock and will be painted
white. The sheetrock on the tenant side of the wall be the responsibility of
the Landlord.

                                       6
<PAGE>   41
4.   Restroom Vestibule.  The walls in the small common hallway adjacent to the
downstairs restrooms will be finished in smooth sheetrock and painted.  The
ceiling will be a sheetrock ceiling to the maximum height with wall mount
scones to match other scones in the building.  The tenant will be responsible
for construction of the telephone closet depicted in the tenant improvement
plans as well as any work related to relocation of the underground telephone
conduit from it present terminus. If required by code, a drinking fountain will
be provided on each level. Tenant shall have the right to perform this work and
be reimbursed by Landlord. If Tenant elects to do this work, Landlord shall
have the right to review and approve the cost estimate prior to commencement of
the work. Landlord's approval of the cost of such work shall not be
unreasonably withheld.

5.   Second Lobby (at northeast end of the building). The lobby and stairway
will have smooth sheetrock walls and ceiling with a porcelain tile floor and a
carpeted stairway. Downlights will be installed in the ceiling. The walls may
be framed, sheetrocked, and painted by the tenant as part of the tenant
improvement work and, if so, landlord will be responsible for this cost. If
tenant elects to do this work and be reimbursed by Landlord, Landlord shall
have the right to review and approve the cost estimate prior to commencement of
the work. Landlord's approval of the cost of such work shall not be
unreasonably withheld.

6.   Service Room.  The existing electrical room and elevator service room on
the ground level and the janitorial room on the second floor are the sole
service rooms provided by the Landlord. Elevator and electrical rooms will have
sealed concrete floors; the janitors room has a linoleum tile floor.
Appropriate lighting shall be provided for each service room.

7.   Electrical Distribution panels.  Landlord shall be responsible for
installing power and lighting distribution panels within tenant's electrical
closets or rooms on both floors. One lighting panel and one power panel shall be
provided at two locations on the second floor and one location on the first
floor and connected to a distribution panel in the main electrical room on the
ground floor.

8.   Core Doors.  All common area doors will be 3'0" x 7'0" solid core doors
(or as upgraded at tenant's request and cost) with metal frames and shall be
finished and painted white and complete with applicable, trim, hardware and
locking devices. Doors shall meet all applicable fire and building codes.
Perimeter (curtain wall) glass doors shall be fitted with electric or
magnetic releases suitable for connection to tenant's security system (if
applicable).

                                       7

<PAGE>   42
9.   Insulation. Thermal insulation will be added under the roof (at the top of
the second floor ceiling) as required to meet Title 24 calculations. Acoustical
insulation will be added within the walls between the tenant spaces and
restrooms, and within the walls separating tenants.

10.  Walls. The building perimeter walls are smooth finished sheetrock ready to
receive seal coat and paint by tenant. Demising walls (between tenants) will be
finished in smooth sheetrock ready to receive seal coat and paint by tenant.

11.  Floors. The ground level concrete floor is ready to accept floor covering.
Landlord will level the second floor using an application of 1/2 to 3/4 inch
gypcrete prior to tenants commencement of the tenant improvements.

12.  Elevator. One passenger elevator servicing the two floors of the building
and meeting all applicable codes will be provided. The elevator floor will be
carpeted.

13.  Life Safety. Smoke detectors, exit signs, and fire extinguishers shall be
installed in all common areas as required by code.

14.  Landscaping. All landscape and hardscape surfaces and features shall be
completed in compliance with the plans.

END

                                       8<PAGE>   1
                                                                   EXHIBIT 10.9

                               SUBLEASE AGREEMENT

                                    BETWEEN

                                 AUTODESK, INC.

                                      AND

                               OBJECTSWITCH, INC.

                                October 14, 1999

<PAGE>   2
                               SUBLEASE AGREEMENT

     THIS SUBLEASE AGREEMENT (hereinafter referred to as "Sublease"), entered
into as of October 14, 1999, is made by and between Autodesk, Inc., a Delaware
corporation (herein called "Sublandlord"), and ObjectSwitch, Inc., a California
corporation (herein called "Subtenant"), with reference to the following facts:

     A.   Pursuant to that certain Lease dated June 30, 1998 (the "Master
Lease"), Joe and Haidy Shekou ("Landlord"), as Landlord, leased to Sublandlord,
as tenant, certain space (the "Master Lease Premises") in the Building located
at 1 McInnis Parkway, San Rafael, California (the "Building"). Capitalized
terms that are not defined in this Sublease shall have the meanings set forth
in the Master Lease.

     B.   Subtenant wishes to sublease from Sublandlord, and Sublandlord wishes
to sublease to Subtenant, the Master Lease Premises consisting of a portion of
the first floor and the entire second floor of the Building, as more
particularly described in Exhibit A attached hereto and made a part hereof
(hereinafter called the "Subleased Premises").

     NOW, THEREFORE, in consideration of the foregoing, and for other good and
valuable consideration, the receipt and adequacy of which are hereby
acknowledged by the parties, Sublandlord and Subtenant hereby agree as follows:

     1.   Sublease. Sublandlord hereby subleases to Subtenant and Subtenant
hereby subleases from Sublandlord for the term, at the rental, and upon all of
the conditions set forth herein, the Subleased Premises. Subtenant shall have
the parking rights provided to Sublandlord under the Master Lease.

     2.   Term.

          2.1  The term of this Sublease ("Term") shall commence on November
10, 1999 (the "Commencement Date") and end on October 9, 2006 (the "Expiration
Date"), unless sooner terminated pursuant to any provision hereof.

     3.   Right to Terminate.

          3.1  Landlord and Tenant shall each have the right and option to
terminate this Sublease ("Termination Option") upon not less than 12 months'
prior written notice. Landlord or Tenant shall give such notices, if at all,
(i) on or before November 1, 2001 for a termination date of November 1, 2002,
(ii) on or before November 1, 2002 for a termination date of November 1, 2003,
and (iii) on or before November 1, 2003 for a termination date of November 1,
2004.

          3.2  Notwithstanding the foregoing, Tenant may not exercise this
Termination Option and such option if exercised shall be effective if, at the
time of such exercise or at the time of the purported termination date an
uncured Event of Default has occurred with respect to Tenant.

          3.3  Time is of the essence with respect to this Termination Option.

                                       1

<PAGE>   3

4.   Rent.

     4.1  Rent Payments. Subtenant shall pay to Sublandlord as Base Rent for
the Subleased Premises during the Term the following amounts:

<TABLE>
<CAPTION>
     MONTHS                 PER ANNUM        PER MONTH
     -------------------------------------------------
     <S>                    <C>              <C>
     Months 1-12            $650,496.00      $54,208.00
     Months 13-24           $676,515.84      $56,376.32
     Months 25-36           $703,576.47      $58,631.37
     Months 37-48           $731,719.53      $60,976.63
     Months 49-60           $760,988.31      $63,415.69
     Months 61-72           $791,427.85      $65,952.32
     Remainder of Term      $823,084.96      $68,590.41
</TABLE>

     Notwithstanding the fact that the Commencement Date is November 10, 1999,
all rent increases shall be effective as of the first day of November of each
applicable year rather than as of the tenth day of November of each applicable
year.

          (a)  Upon execution of this Sublease, Subtenant shall pay the Base
Rent for the first month of the term in the amount of $37,945.60.

          (b)  If the Term does not begin or end on the last day of a month,
the Base Rent for that partial month shall be prorated by multiplying the
monthly Base Rent by a fraction, the numerator of which is the number of days
of the partial month included in the Term and the denominator of which is the
total number of days in the full calendar month. All Rent (hereinafter defined
as Base Rent and additional monies owed by Subtenant to Sublandlord hereunder)
shall be payable in lawful money of the United States, by regular bank check of
Subtenant, to Sublandlord at the address stated herein or to such other persons
or at such other places as Sublandlord may designate in writing.

     4.2  Taxes and Operating Expenses. Except for the costs of utilities
furnished to the Premises, including water, electricity, gas and heating,
ventilation and air conditioning, which shall be paid for by Subtenant, the
Rent is inclusive of operating expenses and real estate taxes.

     4.3  Furniture and Equipment.

          (a) During the Term of this Sublease, Subtenant shall lease the
personal property and equipment described in Exhibit B attached hereto
("Personal Property") from Sublandlord.

          (b) In addition to the Base Rent, Subtenant shall pay Sublandlord as
rent for the Personal Property, the amount of $73,200.00 per annum, payable in
equal monthly installments of $6,100.00 (the "Personal Property Rent").

                                       2
<PAGE>   4
                  (c)   The Personal Property Rent shall be paid at the time and
in the same manner as the Base Rent and a failure by Subtenant to pay any
installment of the Personal Property Rent shall constitute an Event of Default
hereunder.

                  (d)   Upon the Expiration Date or the earlier termination of
this Sublease, Subtenant shall restore the Personal Property to the same
condition it was in at the commencement of this Sublease, normal wear and tear
excepted. Sublandlord shall have the right to inspect all such Personal Property
prior to the Expiration Date to confirm its condition and Subtenant shall be
responsible for any damages incurred by Sublandlord by reason of damage, loss,
theft or destruction of the Personal Property.

            4.4  Card Key

                  (a)   Subtenant shall provide Sublandlord with written notice
of its election either (i) to terminate the existing card key security system
("Card Key System") and, at its sole cost and expense, enter into an agreement
with MTI or with another vendor approved by Sublandlord in writing to adapt the
system to its use or (ii) to engage Sublandlord to administer the Card Key
System in the Subleased Premises at the rate of $15.00 per card key per year
("Card Key Payment").

                  (b)   Subtenant will pay the Card Key Payment to Sublandlord
in monthly installments together with the installment of Base Rent.

                  (c)   Upon the Expiration Date or earlier termination of this
Sublease, Subtenant will return the Card Key System to Sublandlord in the
condition existing on the Commencement Date of this Sublease, subject to normal
wear and tear.

      5.    Use and Occupancy.

            5.1   Use. The Subleased Premises shall be used for general office
use, and for no other purpose.

            5.2   Compliance with Master Lease.

                  (a)   Subtenant agrees that it will occupy the Subleased
Premises in accordance with the terms of the Master Lease and will not suffer
to be done or omit to do any act which will result in a violation of or a
default under any of the terms and conditions of the Master Lease, including,
without limitation, surrendering possession of the Subleased Premises to
Sublandlord no later than the expiration or termination date of the Master
Lease, or render Sublandlord liable for any damage, charge or expense
thereunder. Subtenant further covenants and agrees to indemnify Sublandlord
against and hold Sublandlord harmless from any claim, demand, action,
proceeding, suit, liability, loss, judgment, expense (including attorneys fees)
and damages of any kind or nature whatsoever arising out of, by reason of, or
resulting from, Subtenant's failure to perform or observe any of the terms and
conditions of the Master Lease (to the extent that Subtenant is obligated
hereby to perform such matters) or this Sublease. Any other provision in this
Sublease to the contrary notwithstanding, Subtenant shall pay to Sublandlord as
Rent hereunder any and all sums which Sublandlord may be required to pay the

                                       3

<PAGE>   5
Landlord arising out of a request by Subtenant for additional Building services
from Landlord (e.g., charges associated with after-hour HVAC usage and
overstandard electrical charges).

               (b)  Subtenant agrees that Sublandlord shall not be required to
perform any of the covenants, agreements and/or obligations of Landlord under
the Master Lease and, insofar as any of the covenants, agreements and
obligations of Sublandlord hereunder are required to be performed under the
Master Lease by Landlord thereunder, Subtenant required to be performed under
the Master Lease by Landlord thereunder, Subtenant acknowledges and agrees that
Sublandlord shall be entitled to look to Landlord for such performance.
Sublandlord shall not be responsible for any failure or interruption, for any
reason whatsoever, of the services or facilities that may be appurtenant to or
supplied at the Building by Landlord or otherwise, including, without
limitation, heat, air conditioning, ventilation, life-safety, water,
electricity, elevator service and cleaning service, if any; and no failure to
furnish, or interruption of, any such services or facilities shall give rise to
any (i) abatement, diminution or reduction of Subtenant's obligations under
this Sublease, or (ii) liability on the part of Sublandlord. Notwithstanding
the foregoing, Sublandlord shall promptly take such action as may reasonably be
indicated, under the circumstances, to secure such performance upon Subtenant's
request to Sublandlord to do so and shall thereafter diligently prosecute such
performance on the part of Landlord.

               (c)  In the event that Subtenant holds over after the Expiration
Date, Sublandlord shall have the same rights and remedies against Subtenant as
Landlord has against Sublandlord under the Master Lease and, in addition to any
damages, costs and expenses incurred by Sublandlord as a result of such holding
over, Subtenant shall be liable to Sublandlord for all damages and payments
that Sublandlord is liable for under the Master Lease.

          5.3  Subtenant shall have the same rights of signage as provided to
Sublandlord under the Master Lease and subject to the same terms and
conditions. Subtenant shall remove its signs and restore the Building and
Premises at its sole cost and expense upon the Expiration Date or earlier
termination of this Sublease. Sublandlord shall remove its sign from the
Building in a commercially reasonable time period.

     6.   Master Lease and Sublease Terms.

          6.1  Subtenant acknowledges that Subtenant has reviewed and is
familiar with all of the terms, agreements, covenants and conditions of the
Master Lease, a copy of which is attached to this Sublease as Exhibit C.

          6.2  This Sublease is and shall be at all times subject and
subordinate to the Master Lease.

          6.3  The terms, conditions and respective obligations of Sublandlord
and Subtenant to each other under this Sublease shall be the terms and
conditions of the Master Lease except for those provisions of the Master Lease
which are directly contradicted by this Sublease in which event the terms of
the Sublease document shall control over the Master Lease. Therefore, for the
purposes of this Sublease, wherever in the Master Lease the word "Landlord" is
used it shall be deemed to mean the Sublandlord herein and wherever in the
Master Lease the word "Tenant" is used it shall be deemed to mean the Subtenant
herein. The time limits
<PAGE>   6
contained in the Master Lease for the giving of notices, making of demands or
performing of any act, condition or covenant on the part of the tenant
thereunder, or for the exercise by the tenant thereunder of any right, remedy
or option, are changed for the purposes of incorporation herein by reference by
shortening the same in each instance by three days, so that in each instance
Subtenant shall have three days less time to observe or perform hereunder than
Sublandlord has as the tenant under the Master Lease. The time limits contained
in the Master Lease for the giving of notices, making of demands or performing
of any act, condition or covenant on the part of Landlord, or for the exercise
by Landlord of any right, remedy or option, are changed for the purposes of
incorporation herein by reference by doubling the same in each instance, so that
in each instance Sublandlord shall have twice as much time to observe or perform
hereunder than Landlord has under the Master Lease. Any non-liability, release,
indemnity or hold harmless provision in the Master Lease for the benefit of
Landlord that is incorporated herein by reference, shall be deemed to inure to
the benefit of Sublandlord, Landlord, and any other person intended to be
benefited by said provision, for the purpose of incorporation by reference in
this Sublease. Any right of Landlord under the Master Lease of access or
inspection and any right of Landlord under the Master Lease to do work in the
Master Lease Premises or in the Building and any right of Landlord under the
Master Lease in respect of rules and regulations, which is incorporated herein
by reference, shall be deemed to inure to the benefit of Sublandlord, Landlord,
and any other person intended to be benefited by said provision, for the
purpose of incorporation by reference in this Sublease.

     6.4  Sublessee shall be able to assign and/or sub sublet the Sublease
Premises as and to the extent permitted in accordance with the terms of the
Master Lease. In no event shall any such assignment and/or sub sublease be
effective unless consented to by landlord and Sublandlord except as otherwise
provided in the Master Lease. Except with respect to an assignment or
subletting permitted automatically pursuant to Section 6.2 of the Master Lease,
Sublandlord shall have the right to recapture the Premises (or the portion of
the Premises being sublet) in lieu of consenting to an assignment or subletting.

     6.5  For the purposes of incorporation herein, the terms of the Master
Lease are subject to the following additional modifications:

          (a)  In all provisions of the Master Lease (under the terms thereof
and without regard to modifications thereof or purposes of incorporation into
this Sublease) requiring the approval or consent of Landlord, Subtenant shall
be required to obtain the approval or consent of both Sublandlord and Landlord
(subject to the duties assumed hereunder on the part of Sublandlord to obtain
or participate in obtaining consent from Landlord).

          (b)  In all provisions of the Master Lease requiring Tenant to
submit, exhibit to, supply or provide Landlord with evidence, certificates, or
any other matter or thing, Subtenant shall be required to submit, exhibit to,
supply or provide, as the case may be, the same to both Landlord and
Sublandlord. In any such instance, Sublandlord shall determine if such
evidence, certificate or other matter or thing shall be satisfactory.

          (c)  Sublandlord shall have no obligation to restore or rebuild any
portion of the Sublease Premises after any destruction or taking by eminent
domain.

                                       5
<PAGE>   7
               (d)  In all provisions of the Master Lease requiring Tenant to
designate Landlord as an additional or named insured on its insurance policy,
Subtenant shall be required to so designate Landlord and Sublandlord on its
insurance policy.

          6.6  During the Term and for all periods subsequent thereto with
respect to obligations which have arisen prior to the termination of this
Sublease, Subtenant agrees to perform and comply with, for the benefit of
Sublandlord and Landlord, the obligations of Sublandlord under the Master Lease
which pertains to the Subleased Premises and/or this Sublease, except for those
provisions of the Master Lease which are directly contradicted by or in
contravention of this Sublease, in which event the terms of this Sublease
document shall control over the Master Lease. Notwithstanding the foregoing,
Subtenant's financial responsibilities hereunder shall be determined wholly by
the terms and conditions of this Sublease, and Subtenant shall not under any
circumstances become liable or responsible for meeting Sublandlord's financial
or other obligations under the Master Lease.

     7.   Termination of Master Lease. If for any reason the term of the Master
Lease shall terminate prior to the scheduled Expiration Date, this Sublease
shall thereupon be terminated and Sublandlord shall not be liable to Subtenant
by reason thereof unless (i) Subtenant shall not then be in default hereunder
beyond any applicable notice and cure period and (ii) such termination shall
have been effected because of the breach or default of Sublandlord under the
Master Lease or by reason of the voluntary termination or surrender of the
Master Lease by Sublandlord.

     8.   Indemnity.

          8.1  Subtenant shall indemnify, defend and hold harmless Sublandlord
from and against all losses, costs, damages, expenses and liabilities,
including without limitation, reasonable attorneys' fees and disbursements,
which Sublandlord may incur or pay out (including, without limitation, to the
landlord under the Master Lease) by reason of (i) any accidents, damages or
injuries to persons or property occurring in the Subleased Premises (unless the
same shall have been caused by Sublandlord's negligence or wrongful act or the
negligence or wrongful act of the landlord under the Master Lease), (ii) any
breach or default hereunder on Subtenant's part (provided, that any applicable
notice has been given, and any applicable cure period has expired without cure
by Subtenant), (iii) any work done after the date hereof in or to the Subleased
Premises except if done by Sublandlord or the landlord under the Master Lease,
or (iv) any act, omission or negligence on the part of Subtenant and/or its
officers, partners, employees, agents, Clients, invitees, or any person
claiming through or under Subtenant.

          8.2  Sublandlord shall not be liable for personal injury or property
damage to Subtenant, its officers, agents, employees, invitees, guests, Clients,
licensees or any other person which takes place in the Sublease Premises, unless
such injury or damage is caused by or results from Sublandlord's negligence,
willful wrongdoing, or breach of the provisions of this Sublease. Any property
of Subtenant kept or stored in the Sublease Premises shall be kept or stored at
the sole risk of Subtenant.

                                       6

<PAGE>   8
     9.   Consents.

          9.1  Under the Master Lease, Sublandlord must obtain the consent of
Landlord to any subletting. This Sublease shall not be effective unless, on or
before the time provided in the Master Lease for Landlord to approve a
subletting, this Sublease is signed by both Sublandlord and Subtenant, Landlord
signs and delivers to Sublandlord and Subtenant a consent to this Sublease
thereby giving Landlord's consent to this subletting.

          9.2  In any instance when Sublandlord's consent or approval is
required under this Sublease, Sublandlord's refusal to consent to or approve
any matter or thing shall be deemed reasonable if, among other matters, such
consent or approval is required under the provisions of the Master Lease
incorporated herein by reference but has not been obtained from Landlord.
Except as otherwise provided herein, Sublandlord shall not unreasonably
withhold, or delay its consent to or approval of a matter if such consent or
approval is required under the provisions of the Master Lease and Landlord has
consented to or approved of such matter.

     10.  Attorney's Fees. If Sublandlord or Subtenant brings an action to
enforce the terms hereof or to declare rights hereunder, the prevailing party
shall be entitled to its reasonable attorney's fees to be paid by the losing
party as fixed by the Court.

     11.  Subtenant's Work:

          11.1 Generally. Except for touch up painting of the Premises and
shampooing the carpet throughout the Premises, without, however, any obligation
to move any furniture, furnishings or equipment, Sublandlord shall deliver, and
Subtenant shall accept, possession of the Subleased Premises in their "AS-IS"
condition as the Subleased Premises exists on the date hereof.

          11.2 As-Is. In making and executing this Sublease, Subtenant has
relied solely on such investigations, examinations and inspections as Subtenant
has chosen to make or has made and has not relied on any representation or
warranty concerning the Subleased Premises or the Building, except as expressly
set forth in this Sublease. Subtenant acknowledges that Sublandlord has
afforded Subtenant the opportunity for full and complete investigations,
examinations and inspections of the Subleased Premises and the common areas of
the Building. Subtenant acknowledges that it is not authorized to make or do
any alterations or improvements in or to the Subleased Premises except as
permitted by the provisions of this Sublease and the Master Lease. Upon
termination of this Sublease, Subtenant shall deliver the Subleased Premises to
Sublandlord broom clean and in the same condition as the Subleased Premises
were at the commencement of the Term hereof, reasonable wear and tear excepted.
In the event that Subtenant is allowed to make any improvements or alterations
to the Subleased Premises, including without limitation, additional wiring or
cabling ("Alterations"), Subtenant will, at its sole cost and expense, remove
all Alterations from the Subleased Premises and restore the Subleased Premises
to the condition existing as of the Commencement Date, except for any
Alterations which Sublandlord and Master Landlord agree may remain thereon. In
addition, Subtenant will remove its personal property, furniture and equipment
from the Subleased Premises upon the expiration of the term of this Sublease.

                                       7

<PAGE>   9
          11.3  Code-Required Work. If the performance of the Subtenant
Improvements within the Subleased Premises "triggers" a requirement for
code-related upgrades to or improvements of the Master Lease Premises or any
common areas, Sublandlord and Subtenant agree that Subtenant shall be
responsible for the additional cost of such code-related upgrade or
improvements.

     12.  Security Deposit

          12.1  Upon the execution of this Sublease, Subtenant shall deliver a
cash deposit in the amount of $64,791.00 to Sublandlord as a Security Deposit.

          12.2  Within five (5) business days after receipt of Landlord's
approval of this Sublease, Subtenant shall deliver to Sublandlord as security
for the faithful performance of all of its obligations under this Sublease, a
cash deposit or Letter of Credit (as defined below) in the amount of
$300,000.00 (the cash deposit and the Letter of Credit are collectively
referred to as the "Deposit"). A failure by Subtenant to deliver such letter of
credit, containing the exact terms and conditions set forth herein shall
constitute an event of default by Subtenant under this Sublease. Provided that
an Event of Default has not occurred with respect to Subtenant during the Term,
(i) the Letter of Credit shall be reduced on the first day of the twenty-fifth
month of the Term to the amount of $150,000 and (ii) in the event that
Subtenant has a public offering of stock on either the New York Stock Exchange,
the American Stock Exchange or Nasdaq and as a result of such public offering,
Subtenant is able to provide evidence reasonably satisfactory to Sublandlord to
demonstrate that it has achieved a market capitalization of $200,000,000.00,
the letter of credit shall be returned to Subtenant.

          12.3  Letter of Credit means an unconditional, irrevocable sight
draft letter of credit issued by a San Francisco office of a bank reasonably
satisfactory to Sublandlord, naming Sublandlord as beneficiary and otherwise in
form and substance reasonably satisfactory to Sublandlord. The Letter of Credit
shall be for a one-year term and shall provide: (i) that Sublandlord may make
partial and multiple draws thereunder in amounts necessary to cure any events of
default with respect to Subtenant, (ii) that Sublandlord may draw upon the
Letter of Credit up to the full amount and the bank will honor a sight draft of
Sublandlord without any documents or certifications other than a written
statement by Sublandlord stating that it is entitled to draw upon the Letter of
Credit in accordance with the terms of this Sublease, (iii) that in the event
of Sublandlord's assignment or other transfer of its interest in this Sublease,
the Letter of Credit shall be freely transferable by Sublandlord, without
charge and without recourse to the assignee or transferee of such interest and
the bank shall confirm the same to Sublandlord and such assignee or transferee,
and (iv) the Letter of Credit will be automatically renewed upon the expiration
of its term for additional one year periods.

          12.4  Notwithstanding the foregoing, if the bank does not confirm the
extension of the Letter of Credit at least 30 days prior to the relevant annual
expiration date or if Subtenant does not substitute a replacement Letter of
Credit by such date, Sublandlord shall be entitled to draw on the Letter of
Credit and to hold such funds as the Deposit. Sublandlord shall not be required
to segregate the Letter of Credit from its other assets and no interest shall
accrue or be payable to Subtenant with respect thereto.

                                       8

<PAGE>   10
          12.5  If Subtenant fails to pay rent or other charges due under the
Sublease, or if an Event of Default (as defined in the Master Lease) otherwise
occurs with respect to any provision of the Sublease, Sublandlord may at its
sole option apply or retain all or any portion of the Deposit for the payment
of any rent or other charges in default or the payment of any other sum to
which Sublandlord may become entitled by Subtenant's default, or to compensate
Sublandlord for any loss or damage which Sublandlord may suffer thereby. If
Sublandlord so uses or applies all or any portion of the Deposit, then within
ten (10) days after demand therefor Subtenant shall deposit cash or a Letter of
Credit with Sublandlord in an amount sufficient to restore the amount thereof,
and Subtenant's failure to do so shall be a material breach of the Sublease.
Sublandlord's application or retention of the Deposit shall not constitute a
waiver of Subtenant's default to the extent that the Deposit does not fully
compensate Sublandlord for all losses or damages incurred by Sublandlord in
connection with such default and shall not prejudice any other rights or
remedies available to Sublandlord under the Sublease or by law. Sublandlord
shall not be required to keep the Deposit separate from its general accounts. If
Subtenant performs all of Subtenant's obligations under the Sublease, including
its obligations with respect to its leasing of the Personal Property, the
Deposit, or so much thereof as has not theretofore been applied by Sublandlord,
shall be returned, without payment of interest or other increment for its use,
to Subtenant (or, at Sublandlord's option, to the last assignee, if any, of
Subtenant's interest under the Sublease) within thirty (30) days after the
later of (i) expiration of term of the Sublease or (ii) vacation of the
Premises by Subtenant. No trust relationship is created between Sublandlord and
Subtenant with respect to the deposit.

     13.  Notices. Any notice by either party to the other required, permitted
or provided for herein shall be valid only if in writing and shall be deemed to
be duly given only if (a) delivered personally, or (b) sent by means of Federal
Express, UPS Next Day Air or another reputable express mail delivery service
guaranteeing next day delivery addressed (i) if to Sublandlord, at the
following addresses:

                    Autodesk, Inc.
                    111 McInnis Parkway
                    San Rafael, California 94903
                    Attention: Corporate Real Estate and Facilities

                    With a copy to:

                    Shartsis, Friese & Ginsburg, LLP
                    One Maritime Plaza, 18th Floor
                    San Francisco, California 94111
                    Attention: Alan J. Robin

and (ii) if the Subtenant, at the following addresses:

                    At the Premises

or at such other address for either party as that party may designate by notice
to the other. A notice shall be deemed given and effective, if delivered
personally, upon hand delivery thereof (unless such delivery takes place after
hours or on a holiday or weekend, in which event the

                                       9
<PAGE>   11
notice shall be deemed given on the next succeeding business day), if sent via
overnight courier, on the business day next succeeding delivery to the courier.

     14.  Complete Agreement.  There are no representations, warranties,
agreements, arrangements or understandings, oral or written, between the
parties or their representatives relating to the subject matter of this
Sublease which are not fully expressed in this Sublease. This Sublease cannot be
changed or terminated nor may any of its provisions be waived orally or in any
manner other than by a written agreement executed by both parties.

     15.  Interpretation.  Irrespective of the place of execution or
performance, this Sublease shall be governed by and construed in accordance with
the laws of the State of California. If any provision of this Sublease or the
application thereof to any person or circumstance shall, for any reason and to
any extent, be invalid or unenforceable, the remainder of this Sublease and the
application of that provision to other persons or circumstances shall not be
affected but rather shall be enforced to the extent permitted by law. The table
of contents, captions, headings and titles, if any, in this Sublease are solely
for convenience or reference and shall not affect its interpretation. This
Sublease shall be construed without regard to any presumption or other rule
requiring construction against the party causing this Sublease or any part
thereof to be drafted. If any words or phrases in this Sublease shall have been
stricken out or otherwise eliminated, whether or not any other words or phrases
have been added, this Sublease shall be construed as if the words or phrases so
stricken out or otherwise eliminated were never included in this Sublease and
no implication or inference shall be drawn from the fact that said works or
phrases were so stricken out or otherwise eliminated. Each covenant, agreement,
obligation or other provision of this Sublease shall be deemed and construed as
a separate and independent covenant of the party bound by, undertaking or
making same, not dependent on any other provision of this Sublease unless
otherwise expressly provided. All terms and words used in this Sublease,
regardless of the number or gender in which they are used, shall be deemed to
include any other number and any other gender as the context may require. The
work "person" as used in this Sublease shall mean a natural person or persons,
a partnership, a corporation or any other form of business or legal association
or entity.

     16.  Counterparts.  This Sublease may be executed in separate
counterparts, each of which shall constitute an original and all of which
together shall constitute one and the same instrument. This Sublease shall be
fully executed when each party whose signature is required has signed and
delivered to each of the parties at least one counterpart, even though no
single counterpart contains the signatures of all parties hereto.

     17.  Brokers.  Subtenant represents that, except for Subtenant's broker,
Cushman & Wakefield, and Sublandlord's broker, Colliers International,
Subtenant has not dealt with any real estate broker, sales person, or finder
in connection with this Sublease, and no such person initiated or participated
in the negotiation of this Sublease, or showed the Subleased Premises to
Subtenant. Subtenant hereby agrees to indemnify, protect, defend and hold
Sublandlord harmless from and against any and all liabilities and claims for
commissions and fees arising out of a breach of the foregoing representation.
Sublandlord agrees to pay any commission to which Colliers International and
Cushman & Wakefield are entitled in connection with this Sublease pursuant to a
separate written agreement with such brokers.

                                       10
<PAGE>   12

      IN WITNESS WHEREOF, the parties hereto hereby execute this Sublease as of
the day and year first above written.

SUBLANDLORD:                              SUBTENANT:

AUTODESK, INC.,                           OBJECTSWITCH, INC.,
a Delaware corporation                    a California corporation,

By /s/ STEVE CAKEBREAD                    By /s/ GREG STRAUGHN
  -----------------------------             --------------------------------

Print Name Steve Cakebread                Print Name Greg Straughn
          ---------------------                     ------------------------

Title SRVP CFO                            Title Vice President - Finance
     --------------------------                -----------------------------

                                          By
                                            --------------------------------

                                          Print Name
                                                    ------------------------

                                          Title
                                               -----------------------------

                                       11

<PAGE>   13
                                   EXHIBIT A

                       DESCRIPTION OF 1ST FLOOR PREMISES

                            [INTENTIONALLY OMITTED.]

                                       12
<PAGE>   14
                                   EXHIBIT A

                       DESCRIPTION OF 2ND FLOOR PREMISES

                            [INTENTIONALLY OMITTED.]

                                       13

<PAGE>   15
                                   EXHIBIT C

                              COPY OF MASTER LEASE

                            [Intentionally Omitted.]

                                       15

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