Document:

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                                                                   EXHIBIT 10.17

                                  SUB-SUBLEASE

THIS SUB-SUBLEASE (this "Sub-Sublease") is entered into as of the 18th day of
November, 1997, by and between (i) Talarian, Inc., a California corporation
("Talarian"), and (ii) Fenwick & West LLP ("Fenwick").

        A. Pursuant to that certain Lease dated February 8, 1995 (the "Master
Lease"), by and between GVE Distel Associates, a California general partnership
("Master Landlord"), as landlord, and BroadVision, Inc., a Delaware corporation
("BroadVision"), as tenant, BroadVision is leasing from Master Landlord certain
space in a building located at 333 Distel Circle, Los Altos, California. A copy
of the Master Lease is attached hereto as Exhibit A.

        B. Pursuant to that certain Sublease dated July 18, 1997 (the
"Sublease"), BroadVision subleased to Talarian the premises covered by the
Master Lease consisting of approximately 16,359 rentable square feet as more
particularly described in the Sublease (the "Subleased Premises"). A copy of the
Sublease is attached hereto as Exhibit B.

        C. Fenwick desires to sub-sublease a portion of the Subleased Premises
consisting of approximately eight thousand one hundred seventy nine (8,179)
square feet from Talarian and Talarian desires to sub-sublease such portion of
the Subleased Premises to Fenwick, on the terms, covenants and conditions
contained herein.

        NOW, THEREFORE, in consideration of the mutual covenants and promises of
the parties contained herein, the parties hereto as agree as follows:

        1. SUB-SUBLEASE. Talarian subleases to Fenwick and Fenwick hires from
Talarian a portion of the Subleased Premises consisting of approximately 8,179
square feet and more particularly described on Exhibit C hereto (the "Fenwick
Premises"). The Fenwick Premises shall be delivered to Fenwick on the
Commencement Date in "AS IS" condition with all faults, and Fenwick by
acceptance and delivery thereof, acknowledges that same to be in good order and
repair and in a tenantable condition. Notwithstanding the foregoing to the
contrary, Talarian shall cause all carpeting in the Fenwick Premises to be
cleaned prior to delivery of the Fenwick Premises to Fenwick.

        2. TERM. The term of this Sub-Sublease shall commence on December 15,
1997 (the "Commencement Date") and shall expire on January 31, 1999, unless
sooner terminated as hereafter provided or as provided in the Master Lease (the
"Term"). The Term of this Sub-Sublease shall earlier terminate in the event of
the earlier termination for any cause whatsoever of the Sublease or of the
Master Lease. If Talarian terminates the Sublease under Paragraph 3 of the
Sublease, this Sub-Sublease will automatically terminate.

               (a) Notwithstanding the foregoing, Fenwick agrees that in the
event of the failure or inability of Talarian for any reason to deliver
possession of the Fenwick Premises on or before the Commencement Date (i)
Talarian shall not be liable for any damage caused thereby; (ii) this
Sub-Sublease shall not be void or voidable; (iii) Fenwick shall not be liable
for rent until such time as Talarian delivers possession of the Fenwick Premises
to Fenwick in the condition required under paragraph 1 above; and (iv) the Term
shall not be extended by any such delay.
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               (b) Notwithstanding the provisions of this Paragraph 2 to the
contrary, if Talarian had not delivered the Fenwick Premises to Fenwick in the
condition required under paragraph 1 above on or before December 31, 1997,
Fenwick shall have the right thereafter, until such possession is delivered to
Fenwick, to terminate this Sub-Sublease upon ten (10) days notice to Talarian.
Upon such termination, both parties shall be released from further liability
under this Sub-Sublease and all deposits and prepaid rent shall be returned to
Fenwick.

3. RENT.

        (a) BASE RENT. Fenwick shall pay to Talarian during the Term as base
rent for the Fenwick Premises the sum of Twenty-Five Thousand Three Hundred
Fifty-Four Dollars ($25,354.00) per month, which amount shall be prorated for
each fractional month during the Term. The amounts payable pursuant to this
Paragraph 3(a) are hereinafter referred to as "Base Rent." Fenwick shall pay to
Talarian upon execution of this Sub-Sublease, in addition to the Deposit set
forth in Section 3(d) below, the first month's Base Rent in the amount of
$23,354.00 which shall be applied to the first month of the term (if the term
begins on the first day of a month) or to the first thirty-one days of the term
(if the term begins on any day other than the first day of a month). If the term
begins on other than the first day of a month, on the first day of the first
full month of the term, Fenwick shall pay to Talarian a sum equal to the
difference between the Base Rent due for the full month less the amount of
prepaid Base Rent credited hereunder to a portion of that month.

        (b) PAYMENT. Base Rent and any other charges payable by Fenwick to
Talarian under this Sub-Sublease (collectively "Rent") shall be paid to Talarian
at the place set forth as Talarian's address for notices hereunder, or at such
other place as Talarian may from time to time designate by notice to Fenwick.
All such payments shall be made (i) with respect to Base Rent, on the first day
of each calendar month during the Term of this Sub-Sublease (except that the
Base Rent for the first month of the Term shall be due upon execution of this
Sub-Sublease), without prior notice or demand therefore and without any
deductions or offsets whatsoever; and (ii) with respect to all other payments,
fifteen (15) days prior to the date such payments are due to BroadVision under
the Sublease, or if no regular due date is specified under the Sublease, as
specified in Talarian's written notice to Fenwick (but in no event upon fewer
than fifteen (15) days prior written notice). All such amounts shall be prorated
as appropriate.

        (c) LATE PAYMENTS. If any installment of Base Rent or any other amount
due from Fenwick under this Sub-Sublease shall not be received by Talarian
within five (5) days after the date the same is due and payable, Fenwick shall
pay to Talarian a late charge equal to six percent (6%) of such unpaid amounts.
Acceptance of such late charges by Talarian shall in no event constitute a
waiver of Fenwick's default with respect to such overdue amount nor shall such
acceptance prevent Talarian from exercising any of the other rights and remedies
granted to Talarian hereunder.

        (d) DEPOSIT. Upon the execution of this Lease, Fenwick shall pay to
Talarian the sum of Twenty-Five Thousand Three Hundred Fifty-Four Dollars
($25,354.00) (the "Deposit") to be held as a non-interest bearing security
deposit for the full and faithful performance of each of Fenwick's obligations
under this Sub-Sublease. In the event Fenwick fails to perform or observe any of
the provisions of the Sub-Sublease to be performed or observed by Fenwick, then,
at the

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option of Talarian, Talarian may apply the Deposit or any portion thereof as may
be necessary to remedy any default in the payment of rent or otherwise remedy
any nonperformance by Fenwick, and Fenwick shall forthwith upon demand restore
the Deposit to the original amount specified. Any remaining portion of the
Deposit shall be returned to Fenwick within thirty (30) days of the date of
termination of this Sub-Sublease, provided that Fenwick shall have performed all
of the terms and conditions of this Sub-Sublease throughout the Term, and shall
have vacated the Fenwick Premises in accordance with each and every term and
condition of this Sub-Sublease.

        (e) ABATEMENT. Notwithstanding anything in this Sub-Sublease to the
contrary, in the event that as a result of any restoration or repair to the
Office Building Project, the Building (as such terms are defined in the Master
Lease) or the Subleased Premises (whether as a result of a casualty event, act
of condemnation or otherwise), or due to any other cause whatsoever, Talarian is
entitled to any abatement of Rent under the Sublease, then to the extent that
the Fenwick Premises are damaged or destroyed or otherwise affected by the event
giving rise to the abatement, Fenwick shall be entitled to an equivalent
abatement of the Rent due under this Sub-Sublease.

4. USE. Fenwick shall use the Fenwick Premises only for purposes allowed under
the Master Lease and the Sublease and for no other purpose. Fenwick shall not do
or suffer anything to be done upon the Fenwick Premises which will cause injury
to the Fenwick Premises. Fenwick shall comply with all federal, state, and local
laws, ordinances, regulations and standards relating to its use of the Fenwick
Premises and its use, storage, sale and disposal of hazardous or toxic
substances, as such terms are defined in any such federal, state, or local law,
ordinance, regulation or standard. Fenwick shall not use or bring onto the
Fenwick Premises any hazardous or toxic substance other than such substances as
are customarily used in connection with general office purposes (which
substances shall be used strictly in compliance with applicable laws).

5. OPTIONS.

        (a) TALARIAN OPTION TO RETAKE SPACE. Talarian shall have the option,
from time to time, by giving Fenwick sixty (60) days prior written notice, to
take back the aggregate of up to fifty percent (50%) of the Fenwick Premises for
its own use. Said notice may not be given prior to the beginning of the fourth
(4th) month following Fenwick's initial occupancy of the Fenwick Premises. In
the event Talarian exercises said option, this Sub-Sublease shall be amended to
reflect the remaining square footage being sub-subleased and the monthly Base
Rent amount due shall be modified to reflect an amount equal to $3.10 per square
foot per month multiplied by the remaining square footage that Fenwick shall
occupy after the retaking of space; provided if Fenwick has exercised any right
to extend the term, then the Base Rent shall be equal to the same amount that
Fenwick then is paying per square foot per month multiplied by the remaining
square footage that Fenwick shall occupy after the retaking of the space. In
addition, (i) any costs to move walls, provide separate exits or fire exits
associated with the retaking of space shall be borne by Talarian and (ii)
Talarian shall reimburse Fenwick for Fenwick's costs to move personal property
from the area of the Fenwick Premises retaken to another area of the Fenwick
Premises or to perform recabling required within the Fenwick Premises as a
result of the retaking by Talarian, provided Talarian's obligation under this
clause (iii) shall in no event exceed, in the aggregate, One Thousand Dollars
($1,000.00).

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        (b) FENWICK OPTION TO RENEW TERM. Talarian grants to Fenwick the option
to extend the term of this Sub-Sublease for one period beginning February 1,
1999 and continuing through July 31, 1999 (the "First Extension Term"). If
Fenwick properly exercises its right to extend the term through the First
Extension Term, Fenwick may further extend the term of this Sub-Sublease for one
additional period beginning August 1, 1999 and continuing through January 31,
2000 (the "Second Extension Term"). If Fenwick properly exercises its right to
extent the term of this Sub-Sublease in accordance with this Paragraph 5(b), the
First Extension Term or the Second Extension Term, as the case may be, shall be
on all of the terms and conditions set out in this Sub-Sublease, except the Base
Rent shall be the then current market rate for similar properties in the
immediate area, but in no event less than the Base Rent per square foot that
Talarian is then paying under the Sublease. For purposes of this Sub-Sublease,
any reference to the Term shall include the First Extension Term and the Second
Extension Term provided that Fenwick has properly exercised its rights to extend
the term of this Sub-Sublease.

               (i) The parties acknowledge that Talarian intends to use the
Fenwick Premises at some time during the Sublease term, but that the date for
Talarian use is not known at this time. Therefore, the right of Fenwick to
exercise its option under this Paragraph 5(b) is conditioned upon Talarian
delivering to Fenwick, not later than November 1, 1998 (for the First Extension
Term), or May 1, 1999 (for the Second Extension Term) written notice that
Talarian consents to Fenwick's exercise of its option rights. If no such written
notice is delivered to Fenwick prior to November 1, 1998, Fenwick shall have no
right to exercise its option for the First Extension Term or for the Second
Extension Term. If no such written notice is delivered to Fenwick prior to May
1, 1999, Fenwick shall have no right to exercise its option for the Second
Extension Term.

               (ii) If Talarian delivers to Fenwick the notice described in
clause 5(b)(i) above within the appropriate time period, Fenwick may exercise
its option to extend the Term by, and only by, delivering to Talarian on or
before thirty (30) days before the then expiration of the Term written notice of
exercise ("Notice of Exercise"), which notice, in order to be effective, must
contain Fenwick's statement of the appropriate Base Rent to be paid during the
relevant Extension Term. The Base Year shall remain 1998.

               (iii) If Fenwick properly exercises its option to extend the
Term, if Talarian does not agree with the proposed Base Rent stated in Fenwick's
Notice of Exercise, Talarian shall notify Fenwick in writing and the two parties
for a period of fifteen (15) days shall attempt to agree on the Base Rent to be
paid by Fenwick during the relevant Extension Term. If the parties are unable to
agree during the fifteen (15) day period, the Base Rent shall be determined by
Duffy D'Angelo and Brad Lyman; provided that, if one or both of such individuals
is unavailable to make sure determination, the party on whose behalf such
individual was to act shall have the right to choose a successor to such
individual, which successor shall have the qualifications set forth in the next
sentence. If Duffy D'Angelo and Brad Lyman (or, if applicable, their successors)
are unable to agree on Base Rent within thirty (30) days before the commencement
if the First Extension Term, or the Second Extension Term, as the case may be,
they shall agree upon a licensed commercial real estate broker or agent active
in the office leasing business in the Mountain View/Palo Alto/Los Altos area and
that person shall determine the Base Rent. If Brad Lyman and Duffy D'Angelo (or,
if applicable, their successors) are unable to agree on a third party to
determine the Base Rent, the Base Rent shall be determined by

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an arbitrator appointed by the American Arbitration Association in accordance
with the Rules of the American Arbitration Association. The costs of determining
the Base Rent for any Extension Period shall be borne one-half by Talarian and
one-half by Fenwick.

               (iv) The provisions of the Master Lease, paragraph 39.4 are
specifically incorporated into this Paragraph 5(b).

6. SUB-SUBLEASE SUBJECT TO MASTER LEASE/SUBLEASE. This Sub-Sublease shall be
subject to all of the terms and conditions of the Sublease with the exception of
those items excluded pursuant to Paragraph 7(a) below, and from and after the
Commencement Date Fenwick covenants to perform all of the obligations if
"Subleassee" with regard to the Fenwick Premises under the Sublease accruing or
required to be performed during the Term of this Sub-Sublease to the extent said
terms and conditions are consistent with the provisions of this Sub-Sublease,
and only except as otherwise limited by Paragraph 7(a) below. Talarian shall be
responsible for all of the obligations of "Subleassee" under the Sublease (a)
accruing or required to be performed prior to the Commencement Date and (b)
except as otherwise provided in this Sub-Sublease or incorporated provisions of
the Sublease or the Master Lease, following the expiration or any partial
termination of the Sublease. This Sub-Sublease shall be subject to all the terms
and conditions of the Master Lease with the exception of those items excluded
pursuant to Paragraph 7(a). By agreeing to perform the duties of "Sublessee"
with regard to the Fenwick Premises, Fenwick also is agreeing for the benefit of
Talarian, during the term of this Sub-Sublease to perform all the obligations of
Talarian with regard to the Fenwick Premises under the Master Lease (which
obligations Talarian has assumed pursuant to Paragraph 6 of this Sublease).

7. INCORPORATION OF SUBLEASE.

        (a) EXCLUSIONS. Except as otherwise provided in this Sub-Sublease, all
of the terms and conditions of the Sublease are incorporated herein as terms and
conditions of this Sub-Sublease, with references therein to "Sublessor" and
"Sublessee" to be deemed to mean and refer to, respectively, Talarian and
Fenwick herein, with references to the "Premises" to be deemed to mean and refer
to the "Fenwick Premises" and with references therein to "Sublease" to mean this
Sub-Sublease, and along with the sections and paragraphs set out in this
Sub-Sublease, shall be the complete terms and conditions of this Sub-Sublease;
provided, however, the following paragraphs of the Sublease are not incorporated
herein: 3(a), 3(c), 4(a), 4(d), 5, 7(c) and 8.

        (b) SUBLEASE AMENDMENT. For the purposes of incorporation of the terms
and provisions of the Sublease into this Sub-Sublease, the following Sublease
provisions are hereby amended as follows (references are to paragraphs in the
Sublease):

                4(b) Fenwick shall also pay, in addition to Base Rent, for each
        Comparison Year during the term of this Sub-Sublease, Fenwick's Pro Rate
        Share (as defined below) of any and all increases to the Building's
        Operating Expenses and/or Real Estate Taxes over a 1998 Base Year, to
        the extent that such increases are payable by Talarian pursuant to the
        Sublease (the "Operating Expense Increases"); provided, however, that
        Fenwick shall have no obligation to pay any such increases applicable to
        the first twelve (12) months of the Sub-Sublease term. Fenwick's Pro
        Rata Share, as determined from time to

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        time, shall mean that percentage obtained by dividing the square footage
        contained within the Fenwick Premises (the "Fenwick Numerator") by
        16,359. If the square footage occupied by Fenwick during a calendar year
        shall change, the Fenwick Numerator shall be the average number of
        square feet occupied by Fenwick during such calendar year. The initial
        Fenwick Pro Rata Share is fifty percent (50%).

        (c) MASTER LEASE AMENDMENT. For the purposes of incorporation of the
terms and provisions of the Master Lease and the Sublease into this
Sub-Sublease, the following Master Lease provisions are hereby amended as
follows (references are to paragraphs in the Master Lease):

                8.      Master Landlord, BroadVision and Talarian shall be named
                        as additional insured on the liability insurance.

                13.     The three day cure provided for any monetary default is
                        reduced to two (2) days. The thirty (30) day cure period
                        provided for any non-monetary default is reduced to
                        twenty-five (25) days.

                23.     The addresses for notices shall be set out on the
                        signature page hereto.

        (d) RECOURSE TO MASTER LANDLORD. Notwithstanding Paragraph 7(a) hereof,
it is understood and agreed that Talarian shall have no obligation or
responsibility to provide or perform any service, maintenance utility, repair,
alteration or other similar obligation which is the obligation of Master
Landlord or BroadVision to provide or perform pursuant to the terms of the
Master Lease or Sublease. If Fenwick shall notify Talarian that Master Landlord
or BroadVision is not supplying services to the Subleased Premises as required
under the Master Lease or Sublease, Talarian will promptly request Master
Landlord or BroadVision, as appropriate, to perform such services. Talarian
shall in no event be liable to Fenwick nor shall Fenwick's obligations under
this Sub-Sublease be impaired or reduced or the performance thereof excused
because of any failure or delay on Master Landlord's or BroadVision's part in
providing any such services or in making any repairs or alterations, or in
performing or observing any similar obligation of Master Landlord under the
Master Lease or BroadVision under the Sublease. If BroadVision or Master
Landlord shall default in its obligation to provide services or make repairs as
required under the Sublease or the Master Lease to the Subleased Premises,
Talarian at Fenwick's request shall exercise reasonable efforts to enforce
Talarian's rights against BroadVision (or to cause BroadVision to enforce its
rights against Master Landlord with respect to such service or repairs) but
Talarian shall have no obligation to bring any legal action or proceeding
against BroadVision. Notwithstanding the foregoing, (i) if as a result of
BroadVision's or Master Landlord's failure to provide services or make repairs
as required under the Sublease or applicable provisions of the Master Lease
Fenwick's use of the Fenwick Premises is materially and adversely affected for a
period of thirty (30) or more days, and (ii) if Talarian fails to bring a legal
action against BroadVision for such failure within ten (10) days after Fenwick's
written request to do so; then Fenwick may elect to terminate this Sub-Sublease
provided it provides Talarian with written notice of such termination within
thirty (30) days after the later to occur of (i) and (ii) above.

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        (e) TALARIAN REPRESENTATIONS. Talarian represents to Fenwick, as of the
date hereof, (i) the Sublease and, to Talarian's knowledge, that Master Lease
are in full force and effect and (ii) that no default or event that, with the
passing of time or the giving of notice or both, would constitute a default,
constitute a default, exists on the part of Talarian or, to Talarian's
knowledge, BroadVision or the Master Landlord. However, possession of the
Sublease Premises had not been delivered to Talarian and Talarian has certain
rights to terminate the Sublease if the Sublease Premises are not delivered
within certain time periods described in the Sublease. Talarian agrees to
perform its obligations under the Sublease during the term of this Sub-Sublease,
provided this agreement shall not limit or impair Talarian's right to terminate
the Sublease or to negotiate modifications of the Sublease (including a later
occupancy date (if BroadVision fails to deliver the Sublease Premises within the
time periods required in the Sublease.

        (f) FENWICK HAS READ MASTER LEASE AND SUBLEASE. Fenwick hereby
acknowledges that it has read and is familiar with the terms of the Master Lease
and Sublease, and agrees that this Sub-Sublease is subordinate and subject to
the Master Lease and Sublease.

8. ASSIGNMENT AND SUBLETTING. Fenwick shall not sublet the Fenwick Premises or
assign this Sub-Sublease without the prior written consent of Master Landlord
and BroadVision, to the extent such consent is required under the Master Lease
or Sublease. Fenwick shall not sublet the Fenwick Premises or assigns this
Sub-Sublease without the prior written consent of Talarian, which shall not be
unreasonably withheld.

9. PARKING/SIGNAGE.

        (a) Fenwick shall have the non-exclusive use of four (4) parking spaces
per 1,000 square feet in the Fenwick Premises, subject to the applicable Rules
and Regulations under the Master Lease. Fenwick shall not be charged for
parking.

        (b) Subject to limitations in the Master Lease and the Sublease,
Talarian shall permit Fenwick to install suite door signage consistent with
other signage in the Building. Tenant shall obtain permits as required by City
of Los Altos.

10. AFTER HOURS UTILITY USAGE. Fenwick requires after hours utility services.
Pursuant to Master Lease section 11.1 and 11.3, excessive services and after
hours services usage is "subject to advance request and reimbursement by Lessee
to Lessor of the cost thereof." The parties have not yet determined the ideal
mechanism to (i) provide both parties with access to the "override" switch that
provides after hours utilities or (ii) separately meter Fenwick's usage. It may
be that after hours services can be supplied to Fenwick only if they are
supplied to the entire Subleased Premises. Talarian agrees to provide access to
Fenwick to the mechanical switch that permits after hours services usage. The
cost of after hours utility usage shall be shared by Talarian and Fenwick
equitably in accordance with the after hours usage by each party (if a
cost-effective exact method of measuring the after hours utility usage of each
party cannot be determined). The parties will use their best efforts to enter
into a mutually acceptable agreement regarding an acceptable method of
determining the proper cost allocation of after hours utility charges.

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11. STATEMENTS OF TALARIAN RE: FENWICK PREMISES. Talarian has never occupied the
Subleased Premises and has provided Fenwick with all the information in
Talarian's possession regarding the Fenwick Premises. Without investigation
other than that of which Fenwick is aware, (i) to the best knowledge of
Talarian, the operating systems in the Fenwick Premises are in good working
order and repair and (ii) the Fenwick Premises comply with the requirements of
the American's With Disabilities Act (however, Talarian has had no "ADA" survey
made of the Fenwick Premises). Talarian is assuming no obligations with regard
to the Building operating systems or with regard to compliance with the
American's With Disabilities Act. Talarian agrees to use commercially reasonable
efforts to enforce the obligations of the Master Landlord to repair any
deficiencies in the Building operating systems, and to enforce the obligations
of the Master Landlord to repair any deficiencies with regard to California Code
of Regulations Title 24 and/or with regard to the American's With Disabilities
Act. The term " to the best knowledge of Talarian" is limited to matters within
the present actual knowledge of John Bowman, means only the conscious awareness
of facts or other information by Mr. Bowman, and does not include any knowledge
that may be imputed by constructive notice or other means or imply that any
inquiry has been undertaken.

12. MISCELLANEOUS.

        (a) NOTICES. All notices or demands of any kind required or desired to
be given by Talarian to Fenwick or Fenwick to Talarian hereunder shall be in
writing and shall be sent by hand delivery or by a nationally recognized courier
service, in which event they shall be deemed given when the same are received,
or by depositing such notices or demands in the United States mail, certified or
registered, postage prepaid, return receipt requested, in which event it shall
be deemed given seventy-two (72) hours after such deposit. All notices or
demands shall be addressed to Talarian or Fenwick, as the case may be, at the
address set forth after the signatures to this Sub-Sublease.

        (b) ENTIRE AGREEMENT. This Sub-Sublease represents the entire agreement
between the parties to this Sub-Sublease and supersedes all prior agreements
between the parties, whether written or oral. There are no representations
between Talarian and Fenwick other than those contained in this Sub-Sublease.
Any agreement hereafter made shall be ineffective to change, modify, waive or
discharge this Sub-Sublease 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.

        (c) SUCCESSORS AND ASSIGNS. The terms, covenants and conditions
contained in this Sub-Sublease shall, subject to the provisions of this
Sub-Sublease relating to assignment and subletting, apply to, be binding upon
and inure to the benefit of the heirs, successors and assigns of the parties
hereto.

        (d) WAIVERS. No delay or omission in the exercise of any right or remedy
of either party upon any default by the other party shall impair such right or
remedy or be construed as a waiver of such default. The receipt and acceptance
by Talarian of delinquent rents or charges, or the acceptance of partial
payments of such rents or charges, shall not constitute a waiver of any other
default. No act or conduct of Talarian, including, without limitation, the
acceptance of keys to the Fenwick Premises, shall constitute an acceptance of
the surrender of the Fenwick

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Premises by Fenwick before the expiration of or sooner termination of the Term.
Only a written notice from Talarian to Fenwick shall constitute acceptance of
the surrender of the Fenwick Premises and accomplish a termination of this
Sub-Sublease prior to the scheduled expiration of the term hereof.

        (e) TIME OF ESSENCE. Time is of the essence of this Sub-Sublease.

        (f) ATTORNEY'S FEES. If any party commences an action against the other
party arising out of or in connection with this Sub-Sublease, the prevailing
party shall be entitled to recover from the nonprevailing party the cost and
expenses of such action, including reasonable attorneys' fees and court costs.
The "prevailing party" will be determined by the court before whom the action
was brought based upon the assessment of which party's major agreements or
positions taken in the suit or proceeding could fairly be said to have prevailed
over the other party's major arguments or positions on major disputed issues in
the court's decision.

        (g) COUNTERPARTS. This Sub-Sublease may be executed in counterparts,
each of which shall constitute an original and shall be binding upon all
parties, their successors and permitted assigns.

13. CONDITION PRECEDENT. Notwithstanding Paragraph 2 hereof, the Commencement
Date of this Sub-Sublease shall not occur until the Master Landlord and
BroadVision have consented to this Sub-Sublease in writing in form satisfactory
to Fenwick and Talarian. In the event that such consents are not obtained on or
before January 1, 1998, this Sub-Sublease shall have no further force and
effect; provided that, on or before January 5, 1998, Talarian shall return to
Fenwick all amounts previously paid by Fenwick to Talarian in connection with
this Sub-Sublease (including, without limitation, the amounts paid pursuant to
Paragraphs 3(a) and 3(d) above).

14. BROKERAGE. Each party warrants and represents to the other that such party
has not retained the services of any real estate broker, finder or any other
person whose services would form the basis for any claim for any commission or
fee in connection with this Sub-Sublease or the transactions contemplated
hereby, except for the following parties: Cornish & Carey Commercial ("C&C"),
representing Fenwick, and Colliers Parris International, Inc. ("CPI")
representing Talarian. Talarian shall pay to CPI any commission due to CPI in
connection with this Sub-Sublease pursuant to a separate agreement between
Talarian and CPI. C&C shall recover any commission due to it in connection with
this Sub-Sublease directly from CPI. Each party agrees to save, defend,
indemnify and hold the other party free and harmless from any breach of its
warranty and representation as set forth in the preceding sentence, including
the other party's reasonable attorneys' fees.

15. DISCLOSURE TO TALARIAN. Talarian acknowledges that Fenwick acts as legal
counsel for Talarian on various matters. Throughout the course of negotiations
of this Sub-Sublease, Talarian has been represented by separate counsel, the law
firm of McPharlin, Sprinkles & Thomas LLP. Pursuant to Rule 3-300 of the
California Rules of Professional Conduct, the parties hereto agree that the
terms of this transaction are fair and reasonable to Talarian. Talarian has
reached this conclusion, not based upon any representation by Fenwick of
Fenwick's counsel or agents, but on Talarian's own independent analysis, and
with the advice of its own counsel, the law firm of McPharlin, Sprinkles &
Thomas LLP. Talarian acknowledges that it has the right

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to the advice of an independent lawyer, and has availed itself of that
opportunity. By its signature below, Talarian hereby gives its written consent
to this Sub-Sublease and all of the terms and conditions contained herein.

16. In addition to Base Rent, sub-tenant shall pay GVE Distel Associates an
additional $600.00 per month for unlimited after hours utility usage. Payments
are due on the first, late on the 10th and subject to collection provisions in
the Master Lease.

IN WITNESS WHEREOF, the parties hereto have executed this Sub-Sublease as of the
date first above written.

FENWICK & WEST LLP                     TALARIAN, INC.

By:  /s/                               By:  /s/
     -------------------------------        ------------------------------------

Title:  Managing Partner               Title:  President & CEO
        ----------------------------           ---------------------------------

Date:  11/18/97                        Date:  11/19/97
       -----------------------------          ----------------------------------

Address For Notices:                   Address For Notices:

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

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

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

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

Attn:                                  Attn:
       -----------------------------        ------------------------------------

                                       10
<PAGE>   11
                              CONSENT OF SUBLESSOR

The undersigned, as Lessee and holder of all right and Interest of Lessee under
the Master Lease, hereby consents to the attached Sub-Sublease:

                                       BROADVISION, INC., a Delaware Corporation

                                       By:  /s/
                                            ------------------------------------

                                       Its:  CFO
                                             -----------------------------------

                                       Dated:  11/18/97
                                               ---------------------------------

                            CONSENT OF MASTER LESSOR

The undersigned, as owner and holder of all right, title and interest of Master
Lessor under the Master Lease, hereby consents to the attached Sub-Sublease.

                                       GVE DISTEL ASSOCIATES, a California
                                       General Partnership

                                       By:  /s/
                                            ------------------------------------

                                       Its:  Managing General Partner

                                       Dated:  12/6/97
                                               ---------------------------------

                                       11
<PAGE>   12
                         FIRST AMENDMENT TO SUB-SUBLEASE

        THIS FIRST AMENDMENT TO SUB-SUBLEASE ("First Amendment") is made and
entered into as of February 1, 1999 (the "Effective Date"), by and between
TALARIAN, INC., a California corporation, as sub-sublessor ("Talarian"), and
FENWICK & WEST LLP, a California limited liability partnership, as sub-sublessee
("Fenwick").

                                    RECITALS:

        A. Talarian and Fenwick are parties to that certain Sub-sublease dated
as of November 18, 1997 (the "Sub-sublease"), wherein Talarian sub-subleased to
Fenwick certain premises consisting of approximately 8,179 square feet (the
"Original Fenwick Premises") located at 333 Distel Circle, Los Altos,
California. The Original Fenwick Premises are more particularly described in the
Sub-sublease.

        B. Talarian and Fenwick desire to amend the Sub-sublease, on the terms
and conditions set forth below, to (i) extend the Term of the Sub-sublease, and
(ii) provide for the termination of a portion of the Original Fenwick Premises.

                                   AGREEMENT:

        NOW, THEREFORE, in consideration of the mutual covenants and agreements
herein contained and for other good and valuable consideration, the receipt and
sufficiency of which are hereby acknowledged, Talarian and Fenwick hereby amend
the Sub-sublease and Talarian and Fenwick agree as follows:

        1. Incorporation; Defined Terms. The Sub-sublease, including all
exhibits attached thereto, is incorporated into this First Amendment by this
reference. All capitalized terms used and not otherwise defined in this First
Amendment, but defined in the Sub-sublease, shall have the meaning set forth in
the Sub-sublease.

        2. Extension of Term. The Term of the Sub-sublease, which was scheduled
to expire on January 31, 1999, (the "Scheduled Expiration Date"), is hereby
extended through May 31, 2000 (the "Revised Expiration Date"). The period of the
Term from the Scheduled Expiration Date through the Revised Expiration Date
shall be referred to herein as the "Extended Term." Fenwick's sub-sublease of
the Modified Fenwick Premises (as such term is defined in Paragraph 3 below)
during the Extended Term shall be on and subject to all the terms and provisions
of the Sub-sublease, as amended by this First Amendment.

        3. Partial Termination of Original Fenwick Premises. As of the Effective
Date, (a) Fenwick has vacated that portion of the Original Fenwick Premises
consisting of approximately 2,045 square feet of space (the "Terminated
Premises"), as more particularly shown on Exhibit A attached hereto, and has
surrendered possession of the Terminated Premises to Talarian, and (b) Talarian,
at Talarian's sole cost and expense, has constructed demising walls separating
the Terminated Premises from the Modified

<PAGE>   13
Fenwick Premises. From and after the Effective Date the parties shall have no
further obligation to one another with respect to the Terminated Premises, and
references in the Sub-sublease to the "Fenwick Premises" shall be deemed to mean
the Original Fenwick Premises less the Terminated Premises (the "Modified
Fenwick Premises").

        4. Base Rent; Fenwick's Pro Rata Share; After Hours Utilities.

               (a) From and after the Effective Date, Fenwick shall pay monthly
Base Rent for the Modified Fenwick Premises in an amount equal to Nineteen
Thousand Sixteen Dollars ($19,016.00).

               (b) From and after the Effective Date, Fenwick's Pro Rata Share
pursuant to Paragraph 7(b) of the Sub-sublease shall be Thirty-seven and one
half (37.5) percent.

               (c) From and after the Effective Date, Fenwick shall pay directly
to Master Landlord an amount equal to Four Hundred Fifty Dollars ($450.00) per
month for unlimited after-hours utility usage. Such payments shall be due and
payable in accordance with the second sentence of Paragraph 16 of the
Sub-sublease.

        5. Representations. Talarian represents to Fenwick that, as of the date
hereof, (a) the Sublease and, to Talarian's knowledge, the Master Lease are in
full force and effect, and (b) no default or event that, with the passing of
time or the giving of notice or both, would constitute a default, exists on the
part of Talarian or, to Talarian's knowledge, BroadVision or the Master
Landlord.

        6. Deletions. Paragraph 5 (Options), the second sentence of Paragraph
7(e), and the last clause of the third sentence of Paragraph 7(e) (commencing
with the words "provided this agreement shall not limit...") are hereby deleted
from the Sub-sublease in their entirety.

        7. Miscellaneous.

               (a) Effect of Amendment. Except to the extent the Sub-sublease is
modified by this First Amendment, the remaining terms and provisions of the
Sub-sublease shall remain unmodified and in full force and effect (including,
without limitation, the terms and provisions of Paragraph 15 of the
Sub-sublease, which terms and provisions are hereby reaffirmed with respect to
this First Amendment). In the event of conflict between the terms of the
Sub-sublease and the terms of this First Amendment, the terms of this First
Amendment shall prevail.

               (b) Entire Agreement. This First Amendment embodies the entire
understanding between Talarian and Fenwick with respect to its subject matter
and can be changed only by an instrument in writing signed by Talarian and
Fenwick.

                                       2

<PAGE>   14
               (c) Counterparts. This First Amendment may be executed in
counterparts, each of which shall be deemed an original, but all of which,
together, shall constitute one and the same First Amendment.

        IN WITNESS WHEREOF, Talarian and Fenwick have executed this First
Amendment as of the day and year first set forth above.

LANDLORD:                                  TENANT:

TALARIAN, INC., a California corporation   FENWICK & WEST LLP, a California
                                           Limited liability partnership

By: /s/                                    By: /s/
   -------------------------------            ----------------------------------

    Title: V.P. Finance                        Title: Managing Partner
          ------------------------                   ---------------------------

    Date: 4/9/99                               Date:   April 7, 1999
         -------------------------                  ----------------------------

                                       3

<PAGE>   15
                              CONSENT OF SUBLESSOR

        The undersigned, as Lessee and holder of all right and interest of
Lessee under the Master Lease, hereby consents to the attached First Amendment
to Sub-sublease between Talarian, Inc., as sub-sublessor, and Fenwick & West
LLP, as sub-sublessee, dated as of February 1, 1999.

                                      BROADVISION, INC.,
                                      a Delaware corporation

                                      By: /s/
                                        ----------------------------------

                                         Title: VP Corporate Controller
                                               ----------------------------

                                         Date:   4-15-99
                                              -----------------------------

                           CONSENT OF MASTER LANDLORD

        The undersigned, as owner and holder of all right, title and interest of
Lessor under the Master Lease, hereby consents to the attached First Amendment
to Sub-sublease between Talarian, Inc., as sub-sublessor, and Fenwick & West
LLP, as sub-sublessee, dated as of February 1, 1999.

                                      GVE DISTEL ASSOCIATES,
                                      a California general partnership

                                      By: /s/
                                         ----------------------------------

                                         Title: Managing General Partner
                                               ----------------------------

                                         Date:   4-17-99
                                              -----------------------------<PAGE>   1
                                                                   EXHIBIT 10.20

              TALARIAN SOFTWARE LICENSE AND DISTRIBUTION AGREEMENT

        This Agreement, dated ("Effective Date"), is made between Talarian
("Talarian"), a California corporation doing business at 333 Distel Circle, Los
Altos, California 94022-1404, and ________ ("Licensee"), a corporation doing
business at .

                                    RECITALS

        A. Talarian is in the business of developing and marketing proprietary
software products which assist in the development of communications and data
management software.

        B. Licensee is in the business of developing and marketing
_______________ .

        C. Licensee desires to acquire, and Talarian desires to grant Licensee,
a right and license to use Talarian software to develop Licensee's software
application, to embed the runtime version of Talarian software in such software
applications, and to offer, distribute and sublicense such software applications
to Licensee's customers.

        Talarian and Licensee agree as follows:

        1. DEFINITIONS.

               "SmartSockets Development System" means Talarian's proprietary
SmartSockets computer software programs and tools, in object code form only,
which enable a user to develop an application using SmartSockets. The
SmartSockets Development System is more fully described in Exhibit A. The
SmartSockets Development System includes any and all modifications, revisions
and enhancements to the SmartSockets Development System provided to Licensee
under this Agreement and under any SmartSockets maintenance contracts entered
into by Licensee with Talarian.

               "SmartSockets Runtime" means those portions of the SmartSockets
Development System, in object code form only, which may be incorporated into and
distributed as part of a Bundled Product under the terms of this Agreement.

                "SmartSockets Documentation" means the SmartSockets
Documentation, whether provided in printed form or on machine-readable media,
which is generally provided by Talarian to its licensees in conjunction with and
in support of the SmartSockets Development System or SmartSockets Runtime, all
as described in Exhibit A. The SmartSockets Documentation includes all
modifications, revisions and enhancements to the SmartSockets Documentation
provided to Licensee under this Agreement and under any SmartSockets maintenance
contracts entered into by Licensee with Talarian.

<PAGE>   2
               "Talarian Products" means SmartSockets Development System,
SmartSockets Runtime, and SmartSockets Documentation.

               "Licensee Product" means the computer software and/or hardware
and related documentation specified in Exhibit B, which is one or more stand
alone software products marketed by Licensee and created by Licensee without use
of the SmartSockets Development System, or obtained by Licensee from sources
other than Talarian, which may be combined with SmartSockets Runtime to
constitute a complete deliverable and executable Bundled Product.

               "Bundled Product" means the combination of a Licensee Product and
SmartSockets Runtime, created by modifying a Licensee Product using the
SmartSockets Development System. The Licensee Product must be linked with
SmartSockets Runtime to produce a single executable product. The Licensee
Products will represent a significant functional and value enhancement to the
Talarian Products, such that the primary reason for an end user to license the
Bundled Products is other than the right to receive a license to use the
Talarian Products included in the Bundled Products. Without limiting the
generality of the foregoing, the Bundled Products may not be products that
compete with the Talarian Products, or any portion thereof.

               "End User" means a direct or indirect customer of Licensee who is
authorized by an end user license agreement as specified in Section 3.1 to use a
Talarian Product for the End User's internal business purposes.

               "Sublicensees" means a direct or indirect customer of Licensee
who is authorized by a Sublicensee agreement as specified in Section 3.2 to
distribute a Talarian Product as part of the Bundled Products for distribution
to End Users or other Sublicensees.

               "Territory" means ________.

               "Intellectual Property Rights" means patent rights, copyright
rights (including, but not limited to, rights in audiovisual works and moral
rights), trade secret rights, and any other intellectual property rights
recognized by the law of each applicable jurisdiction.

               "Marks" means Talarian's trademarks, trade names, service marks,
and/or service names specified in Exhibit A.

        2. LICENSES.

               2.1 Grant of License.

                      (a) Licenses. Subject to all the terms and conditions of
this Agreement, Talarian hereby grants to Licensee, and Licensee hereby accepts
a non-exclusive, nontransferable license:

                                      -2-
<PAGE>   3
                      (i) to use a number of SmartSockets Development Systems
set forth in Exhibit A on the platform also set forth in Exhibit A and in
conjunction with Licensee Products, to develop, modify, reproduce, generate and
test Bundled Products;

                      (ii) to market, distribute (directly or through
Sublicensees) and sublicense SmartSockets Runtime, as part of the Bundled
Product, to End Users solely for their own internal business purposes in the
Territory during the term of this Agreement.

               2.2 Reproduction. Subject to the terms of this Agreement,
Talarian grants Licensee a non-exclusive, non-transferable license during the
term of this Agreement to reproduce Talarian Products for distribution in
accordance with Section 2.1.

               2.3 No Reverse Engineering. Licensee will not disassemble,
decompile, or reverse engineer any Talarian Products.

               2.4 No Copying. Licensee will not copy or otherwise reproduce any
Talarian Products, in whole or in part, except for making reasonable numbers of
back-up copies or as expressly authorized by this Agreement.

               2.5 No Unauthorized Derivative Works. Licensee will not modify
the Talarian Product in any manner, except as it may be expressly directed by
Talarian in writing.

               2.6 No Sale of Services. Licensee will not use the Talarian
Products in any manner to provide service bureau, time sharing, or other
computer services to third parties.

               2.7 Limited Rights. Licensee's rights in the Talarian Products
will be limited to those expressly granted in this Agreement.

        3. OTHER AGREEMENTS, PRICING, AND MARKETING.

               3.1 End User Agreement. Licensee may not distribute any Talarian
Products to any End User unless such End User is subject to an end user software
license agreement with Licensee that:

                      (i) protects Talarian's proprietary rights in the Talarian
Products to at least the same degree as the terms and conditions of this
Agreement;

                      (ii) requires that such End User not reverse engineer,
reverse compile or disassemble the object code for the Talarian Products;

                      (iii) requires such End User to comply fully with all
applicable laws and regulations in any of its dealings with respect to the
Talarian Products;

                      (iv) makes no representations or warranties on behalf of
Talarian; and

                                      -3-
<PAGE>   4
                      (v) does not grant any rights to such End User beyond the
scope of this Agreement.

Licensee will promptly provide Talarian with reasonable access to such
agreements following Talarian's request.

               3.2 Sublicensee Agreement. Licensee may distribute, and may grant
sublicenses of, SmartSockets Runtime to Sublicensees as part of the Bundled
Products for distribution and sublicensing of SmartSockets Runtime as part of
the Bundled Products to End Users, provided that each such Sublicensee executes,
or has already executed, a written Sublicensee agreement with Licensee that:

                      (i) protects Talarian's proprietary rights in the Talarian
Products to at least the same degree as the terms and conditions of this
Agreement;

                      (ii) requires that such Sublicensee not reverse engineer,
reverse compile or disassemble the object code for the Talarian Products;

                      (iii) requires such Sublicensee to comply fully with all
applicable laws and regulations in any of its dealings with respect to the
Talarian Products;

                      (iv) makes no representations or warranties on behalf of
Talarian; and

                      (v) precludes the use of the Talarian Products in a
service bureau, time sharing, or other non-licensed basis;

                      (vi) does not permit distribution or sublicensing of the
Talarian Products beyond the scope of this Agreement; and

                      (vii) requires such Sublicensee to enter into an end user
software license agreement with its End User that is consistent with the terms
and conditions of the end user software license agreement specified in Section
3.1.

Licensee will promptly provide Talarian with a copy of each such executed
agreement.

               3.3 Pricing Freedom. Licensee is, and will remain, entirely free
to determine its End User and Sublicensees prices and fees in its own
discretion.

        4. DEMONSTRATIONS, BENCHMARKS, AND EVALUATIONS. Licensee will be
responsible for demonstrations and benchmarks of Talarian Products to, and
evaluations by, its prospective customers. Assistance by Talarian in any
demonstrations or benchmarks will be at Talarian's discretion and at Talarian's
standard rates for its personnel. Licensee may, at no charge, reproduce a
reasonable number of copies of Talarian Products for use by Licensee solely for
the purpose of conducting demonstrations and benchmarks by Licensee personnel or
prospective customers.

                                      -4-
<PAGE>   5
        5. DELIVERY. Talarian will deliver to Licensee a master copy of the
Talarian Products within days of the Effective Date. ----

        6. PAYMENTS.

               6.1 License Payments. Licensee will pay Talarian the
nonrefundable amounts according to the Fee and Payment schedule specified in
Exhibit C for Licensee's use and distribution of the Talarian Products. All
shipping or other transportation charges for delivery of the Talarian Products
to Licensee, including insurance and special packaging, will also be paid by
Licensee.

               6.2 Payments for Maintenance, Support, Updates, and Enhancements
Licensee will pay Talarian the nonrefundable amounts according to the Fee and
Payment schedule specified in Exhibit C for maintenance and support services and
updates and enhancements for the Talarian Products from Talarian under Section
8.2.

               6.3 Payment Terms. Licensee will make all payments to Talarian as
according to the Fee and Payment schedule specified in Exhibit C. Payments made
under this Agreement after their due date will incur interest at a rate equal to
1.5% per month or the highest rate permitted by applicable law, whichever is
lower.

               6.4 Increases. The amounts specified in Exhibit C reflect
Talarian's current published prices. As Talarian's published list prices are
revised from time to time, the amounts specified in Exhibit C will be deemed
amended accordingly upon days prior written notice to Licensee.

               6.5 Taxes. All amounts payable under this Agreement are exclusive
of all sales, use, value-added, withholding, and other taxes and duties.
Licensee will pay all taxes and duties assessed in connection with this
Agreement and its performance by any authority within or outside of the U.S.,
except for taxes payable on Talarian's net income. Talarian will be promptly
reimbursed by Licensee for any and all taxes or duties that Talarian may be
required to pay in connection with this Agreement or its performance.

        7. REPORTS AND AUDITS.

               7.1 Licensee's Records. Licensee will maintain complete records,
during and for three (3) years after the termination or expiration of this
Agreement, regarding the distribution and sublicensing of the Talarian Products
to each End User and Sublicensees.

               7.2 Payment Reports. Within thirty (30) days after the close of
each quarter ending March 31, June 30, September 30 and December 31, Licensee
will deliver to Talarian a report which will provide all information reasonably
necessary for computation and/or confirmation of the payments, if any, due or
credited to Talarian for such quarterly period.

               7.3 Audit. An independent certified public accountant selected by
Talarian may, upon reasonable notice and during normal business hours, inspect
the records of Licensee on which such reports are based. If, upon performing
such audit, it is determined that Licensee

                                      -5-
<PAGE>   6
has underpaid Talarian by an amount greater than five percent (5%) of the
payments due Talarian in the period being audited, Licensee will bear all
reasonable expenses and costs of such audit in addition to its obligation to
make full payment under Section 6.

        8. MAINTENANCE, SUPPORT, AND TRAINING.

               8.1 By Licensee. In addition to the provisions of Section 4,
Licensee will be responsible for providing the following support to its End
Users and Sublicensees: installing the Talarian Products as needed; training End
Users and Sublicensees; and providing all direct first level technical support
to End Users and Sublicensees, including but not limited to diagnosing problems
and using its reasonable efforts to provide solutions.

               8.2 By Talarian. Except as provided otherwise in this Agreement
or in a separate written agreement, Talarian shall not be responsible for
providing support to Sublicensees or End Users. Subject to receipt by Talarian
of payments as specified in Section 6.2, Talarian will provide Licensee with:

                      (i) error corrections for the Talarian Products in
accordance with Talarian's standard maintenance and support policies and
procedures;

                      (ii) updates and enhancements for the Talarian Products to
the extent that Talarian generally provides such updates and enhancements to
Talarian's customers without separately charging for such updates and
enhancements;

                      (iii) access to Talarian's "hot-line" for inquiries from
Licensee relating to the Talarian Products between the hours of 8 a.m. and 5
p.m., Pacific Time, on Talarian's business days; and

                      (iv) training in accordance with the terms and conditions
and pricing specified in Licensors published price list, provided that Licensee
pays the travel and living expenses of Talarian's personnel in connection with
any out-of-town training requested by Licensee.

        9. CONFIDENTIALITY.

               9.1 Obligations.  Licensee agrees:

                      (i) that it will not disclose to any third party or use
any Talarian Products or other technical information disclosed to it by Talarian
(collectively, "Confidential Information") except as expressly permitted in this
Agreement; and

                      (ii) that it will take all reasonable measures to maintain
the confidentiality of all Confidential Information in its possession or
control, which will in no event be less than the measures it uses to maintain
the confidentiality of its own information of similar importance.

                                      -6-
<PAGE>   7
               9.2 Exceptions. "Confidential Information" will not include
information that:

                      (i) is in or enters the public domain without breach of
this Agreement;

                      (ii) Licensee lawfully receives from a third party without
restriction on disclosure and without breach of a nondisclosure obligation; or

                      (iii) Licensee develops independently, which it can prove
with written evidence.

               9.3 Injunctive Relief. Licensee acknowledges that the Talarian
Products contain trade secrets of Talarian, the disclosure of which would cause
substantial harm to Talarian that could not be remedied by the payment of
damages alone. Accordingly, Talarian will be entitled to preliminary and
permanent injunctive relief and other equitable relief for any breach of this
Section 9.

        10. PROPRIETARY RIGHTS.

               10.1 Talarian's Ownership.

                      (a) The Talarian Products are and will remain the sole and
exclusive property of Talarian and its suppliers, if any, whether the Talarian
Products are separate or combined with any other products. Talarian's rights
under this subsection (a) will include, but not be limited to: (i) all copies of
the Talarian Products, in whole and in part; (ii) all Intellectual Property
Rights in the Talarian Products; and (iii) all modifications to, and derivative
works based upon, the Talarian Products.

                      (b) Subject to Section 10.4(b), Licensee will not delete
or in any manner alter the Intellectual Property Rights notices of Talarian and
its suppliers, if any, appearing on the Talarian Products as delivered to
Licensee. As a condition of the license rights granted to Licensee in this
Agreement, Licensee will reproduce and display such notices on each copy it
makes of any Talarian Product.

               10.2 Licensee's Duties. Licensee will use its reasonable efforts
to protect Talarian's Intellectual Property Rights in the Talarian Products and
will report promptly to Talarian any infringement of such rights of which
Licensee becomes aware.

               10.3 Third Party Infringement. Talarian reserves the sole and
exclusive right at its discretion to assert claims against third parties for
infringement or misappropriation of its Intellectual Property Rights in the
Talarian Products.

               10.4 Trademarks.

                      (a) If any advertisement or other marketing material used
by Licensee makes any statement as to the technical features or capabilities of
the Talarian Products beyond

                                      -7-
<PAGE>   8
the information provided to Licensee by Talarian, Licensee will first obtain the
written approval of Talarian prior to publishing such advertisement or material.

                      (b) Nothing in this Agreement grants Licensee any rights
in or to use any of the Marks. Talarian acknowledges that Licensee intends to
use Licensee's own trademarks in connection with Licensee's marketing of the
Talarian Products.

        11. WARRANTY.

               11.1 Power and Authority. Talarian warrants to Licensee that it
has sufficient right and authority to grant to Licensee all licenses and rights
that Talarian grants under this Agreement.

               11.2 Performance Warranty. Talarian warrants, for a period of
thirty (30) days from the Effective Date, that the Talarian Product will
substantially conform to the applicable product documentation provided by
Talarian. The foregoing warranty does not apply to any Talarian Product that has
been modified, combined with other products (including the Licensee Product), or
used improperly. TALARIAN DOES NOT WARRANT THAT THE PRODUCT WILL MEET LICENSEE'S
OR END USER'S REQUIREMENTS, THAT THE PRODUCT WILL OPERATE IN THE COMBINATIONS
THAT LICENSEE MAY SELECT OR USE, THAT THE OPERATION OF THE PRODUCT WILL BE
UNINTERRUPTED OR ERROR FREE, OR THAT ALL ERRORS IN THE PROUDUCT WILL BE
CORRECTED.

               11.3 Sole and Exclusive Remedy. FOR ANY BREACH OF THE WARRANTY
CONTAINED IN SECTION 11.2, LICENSEE'S SOLE AND EXCLUSIVE REMEDY WILL BE, AT
TALARIAN'S OPTION EITHER: (A) THE REPLACEMENT OR CORRECTION OF THE DEFECTIVE
PRODUCT WITHIN 30 DAYS OF BEING INFORMED OF THE BREACH OF WARRANTY; OR (B) THE
TERMINATION OF THIS AGREEMENT AND THE REFUND TO LICENSEE OF THE LICENSE FEE PAID
BY LICENSEE TO TALARIAN FOR SUCH DEFECTIVE TALARIAN PRODUCT UNDER THIS AGREEMENT
WITHIN 60 DAYS OF BEING INFORMED OF THE BREACH OF WARRANTY.

               11.2 Disclaimer of Other Warranties. THE WARRANTIES IN THIS
SECTION ARE IN LIEU OF ALL OTHER WARRANTIES, EXPRESS AND IMPLIED, INCLUDING BUT
NOT LIMITED TO ANY IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
PARTICULAR PURPOSE, AND NONINFRINGEMENT.

        12. INDEMNITIES.

               12.1 Distribution Indemnity. Subject to the terms of Section
12.2, Licensee agrees to indemnify Talarian against any third party claims
against Talarian for loss, damage, liability, or expense (including but not
limited to attorneys' fees) arising out of any acts or omissions of Licensee or
any Sublicensees in connection with their activities under this Agreement.

                                      -8-
<PAGE>   9
               12.2 Infringement Indemnity.

                      (a) Duty to Indemnify and Defend.

                             (i) Talarian will indemnify Licensee against, and
will defend or settle at Talarian's own expense, any action or other proceeding
brought against Licensee to the extent that it is based on a claim that the use
of the Talarian Products as licensed in this Agreement infringes any copyright,
any U.S. patent issued as of the Effective Date, or that the Talarian Products
incorporate any misappropriated trade secrets.

                             (ii) Talarian will pay any and all costs, damages,
and expenses (including but not limited to reasonable attorneys' fees) awarded
against Licensee in any such action or proceeding attributable to any such
claim.

                             (iii) Talarian will have no obligation under this
Section as to any action, proceeding, or claim unless: (A) Talarian is notified
of it promptly; (B) Talarian has sole control of its defense and settlement; and
(C) Licensee provides Talarian with reasonable assistance in its defense and
settlement.

                      (b) Injunctions.

                             (i) If Licensee's use of any Talarian Products
under the terms of this Agreement is, or in Talarian's opinion is likely to be,
enjoined due to the type of infringement or misappropriation specified in
subsection (a) above, then Talarian may, at its sole option and expense, either:

                                    (A) procure for Licensee the right to
continue using such Talarian Products under the terms of this Agreement; or

                                    (B) replace or modify such Talarian Products
so that they are noninfringing and substantially equivalent in function to the
enjoined Talarian Products; or

                                    (C) if options (A) and (B) above cannot be
accomplished despite the reasonable efforts of Talarian, then Talarian may both:

                                            (1) terminate Licensee's rights and
Talarian's obligations under this Agreement with respect to such Talarian
Products, and

                                            (2) refund to Licensee all ongoing
license fees paid by Licensee to Talarian for copies of such Talarian Products
to the extent that Licensee is contractually obligated to return to any End
Users their payments made to Licensee or Sublicensees for such copies.

                                      -9-
<PAGE>   10
                      (c) Sole Remedy. THE FOREGOING ARE TALARIAN'S SOLE AND
EXCLUSIVE OBLIGATIONS, AND LICENSEE'S SOLE AND EXCLUSIVE REMEDIES, WITH RESPECT
TO INFRINGEMENT OR MISAPPROPRIATION OF INTELLECTUAL PROPERTY RIGHTS.

                      (d) Exclusions. Talarian will have no obligations under
this Section 12.2 with respect to infringement or misappropriation arising from
(i) modifications to the Talarian Products that were not authorized by Talarian,
(ii) Talarian Product specifications requested by Licensee, or (iii) the use of
the Talarian Products in combination with products not provided by Talarian.

        13. LIMITATIONS OF LIABILITY.

               13.1 Total Liability. TALARIAN'S TOTAL LIABILITY TO LICENSEE
UNDER THIS AGREEMENT WILL BE LIMITED TO THE PAYMENTS RECEIVED BY LICENSOR FROM
LICENSEE UNDER THIS AGREEMENT.

               13.2 Exclusion of Damages. IN NO EVENT WILL TALARIAN BE LIABLE TO
LICENSEE FOR ANY SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES, WHETHER BASED ON
BREACH OF CONTRACT, TORT (INCLUDING NEGLIGENCE), PRODUCT LIABILITY, OR
OTHERWISE, AND WHETHER OR NOT TALARIAN HAS BEEN ADVISED OF THE POSSIBILITY OF
SUCH DAMAGE.

               13.3 Failure of Essential Purpose. The parties have agreed that
the limitations specified in this Section 13 will survive and apply even if any
limited remedy specified in this Agreement is found to have failed of its
essential purpose.

        14. TERM AND TERMINATION.

               14.1 Term. The term of this Agreement will begin on the Effective
Date and will continue for one (1) year unless terminated earlier in accordance
with the provisions hereof.

               14.2 Events of Termination. Either party will have the right to
terminate this Agreement if:

                      (a) the other party breaches any material term or
condition of this Agreement and fails to cure such breach within thirty (30)
days after written notice;

                      (b) the other party becomes the subject of a voluntary
petition in bankruptcy or any voluntary proceeding relating to insolvency,
receivership, liquidation, or composition for the benefit of creditors; or

                      (c) the other party becomes the subject of an involuntary
petition in bankruptcy or any involuntary proceeding relating to insolvency,
receivership, liquidation, or composition for the benefit of creditors, if such
petition or proceeding is not dismissed within sixty (60) days of filing.

                                      -10-
<PAGE>   11
               14.3 Effect of Termination.

                      (a) Upon termination or expiration of this Agreement,
Licensee will (except as specified in subsection (b) below) immediately return
to Talarian or (at Talarian's request) destroy all copies of the Talarian
Products and other Confidential Information in its possession or control, and an
officer of Licensee will certify to Talarian in writing that Licensee has done
so.

                      (b) Upon termination or expiration of this Agreement,
Talarian will have the option, in its sole discretion, of:

                             (i) electing, at any time, to offer maintenance and
support for the Talarian Products directly to End Users and/or Sublicensees in
accordance with Talarian's standard terms and conditions for such services; or

                             (ii) permitting Licensee to continue to provide
maintenance and support for the Talarian Products to its End Users and/or
Sublicensees upon the terms and conditions of Section 8.1 and continue to use
copies of the Talarian Products, to the extent needed to provide such services,
pursuant to a limited license agreement to be entered between Talarian and
Licensee promptly following such termination or expiration.

               14.4 No Damages for Termination. NEITHER PARTY WILL BE LIABLE TO
THE OTHER FOR DAMAGES OF ANY KIND, INCLUDING INCIDENTAL OR CONSEQUENTIAL
DAMAGES, ON ACCOUNT OF THE TERMINATION OR EXPIRATION OF THIS AGREEMENT IN
ACCORDANCE WITH ITS TERMS. LICENSEE WAIVES ANY RIGHT IT MAY HAVE TO RECEIVE ANY
COMPENSATION OR REPARATIONS ON TERMINATION OR EXPIRATION OF THIS AGREEMENT UNDER
THE LAW OF THE TERRITORY OR OTHERWISE, OTHER THAN AS EXPRESSLY PROVIDED IN THIS
AGREEMENT. Neither party will be liable to the other on account of termination
or expiration of this Agreement for reimbursement or damages for the loss of
goodwill, prospective profits or anticipated income, or on account of any
expenditures, investments, leases or commitments made by either party or for any
other reason whatsoever based upon or growing out of such termination or
expiration.

               14.5 Nonexclusive Remedy. The exercise by either party of any
remedy under this Agreement will be without prejudice to its other remedies
under this Agreement or otherwise.

               14.6 Survival. The rights and obligations of the parties
contained in Sections 9 (Confidentiality), 10 (Proprietary Rights), 13
(Limitations of Liability), and 14.3(b) (Effect of Termination), and the
licenses granted to End Users, by Licensee and Sublicensees prior to the
Agreement's termination or expiration effective date will survive the
termination or expiration of this Agreement.

                                      -11-
<PAGE>   12
        15. COMPLIANCE WITH LAW. Each party agrees to comply with all applicable
laws, rules, and regulations in connection with its activities under this
Agreement. Each party shall comply with all applicable international, national,
state, regional and local laws and regulations in connection with its activities
under this Agreement. Without limiting the foregoing, Licensee acknowledges that
all Talarian Products, including documentation and other technical data, are
subject to export controls imposed by the U.S. Export Administration Act of
1979, as amended (the "Act"), and the regulations promulgated thereunder.
Licensee shall not export or reexport (directly or indirectly) any Talarian
Products or documentation or other technical data therefor without complying
with the Act and the regulations thereunder.

        16. PUBLICITY. Talarian may include Licensee's name in Talarian's
customer list. Talarian may also use Licensee's name and the names of the
Bundled Products in Talarian promotional literature and marketing materials,
provided that Talarian will obtain Licensee's prior approval, such approval will
not be unreasonably withheld.

        17. GENERAL.

               17.1 Assignment. This Agreement will bind and inure to the
benefit of each party's permitted successors and assigns. Licensee may not
assign this Agreement, by operation of law or otherwise in whole or in part,
without Talarian's written consent, which consent will not be unreasonably
withheld. Any attempt to assign this Agreement without such consent will be null
and void.

               17.2 Governing Law. This Agreement will be governed by and
construed in accordance with the laws of the State of California applicable to
agreements entered into, and to be performed entirely, within California between
California residents. Any suit hereunder will be brought solely in the federal
or state courts in the Northern District of California and Licensee hereby
submits to the personal jurisdiction thereof.

               17.3 Severability. If any provision of this Agreement is found
invalid or unenforceable, that provision will be enforced to the maximum extent
permissible, and the other provisions of this Agreement will remain in force.

               17.4 Force Majeure. Except for payments due under this Agreement,
neither party will be responsible for any failure to perform due to causes
beyond its reasonable control (each a "Force Majeure"), including, but not
limited to, acts of God, war, riot, embargoes, acts of civil or military
authorities, denial of or delays in processing of export license applications,
fire, floods, earthquakes, accidents, strikes, or fuel crises, provided that
such party gives prompt written notice thereof to the other party. The time for
performance will be extended for a period equal to the duration of the Force
Majeure, but in no event longer than sixty (60) days.

               17.5 Notices. All notices under this Agreement will be deemed
given when delivered personally, sent by confirmed facsimile transmission, or
sent by certified or registered U.S. mail or nationally-recognized express
courier, return receipt requested, to the address shown below or as may
otherwise be specified by either party to the other in accordance with this
section.

                                      -12-
<PAGE>   13
               17.6 Independent Contractors. The parties to this Agreement are
independent contractors. There is no relationship of partnership, joint venture,
employment, franchise, or agency between the parties. Neither party will have
the power to bind the other or incur obligations on the other's behalf without
the other's prior written consent.

               17.7 Waiver. No failure of either party to exercise or enforce
any of its rights under this Agreement will act as a waiver of such rights.

               17.8 Entire Agreement. This Agreement and its exhibits are the
complete and exclusive agreement between the parties with respect to the subject
matter hereof, superseding and replacing any and all prior agreements,
communications, and understandings (both written

                                      -13-
<PAGE>   14
and oral) regarding such subject matter. This Agreement may only be modified, or
any rights under it waived, by a written document executed by both parties. The
parties have caused this Agreement to be executed by their duly-authorized
representatives as of the Effective Date.

               17.9 Source Code Escrow. Licensee acknowledges that Talarian has
deposited the source code for the Talarian Products into an escrow account
pursuant to that certain Software Deposit Agreement between Talarian Corporation
and National Safe Depository ("NSD"), dated October 9, 1992 ("Escrow
Agreement"). Licensee will have the right to enroll as a beneficiary of the
Escrow Agreement upon payment to NSD of the applicable fees. Licensee will have
the right to file for release of such source code in accordance with the terms
of the Escrow Agreement upon the occurrence of any "Event of Default" as defined
therein.

IN WITNESS WHEREOF, this Agreement has been duly executed by authorized
representatives of the parties hereto.

Licensee:                              Talarian:
          ------------------------              --------------------------------
By:                                    By:
   -------------------------------        --------------------------------------

Name:                                  Name:
     -----------------------------          ------------------------------------
Title:                                 Title:
      ----------------------------           -----------------------------------
Date:                                  Date:
     -----------------------------          ------------------------------------
Address:                               Address:
        --------------------------             ---------------------------------

Facsimile:                             Facsimile:
          ------------------------               -------------------------------

                                      -14-
<PAGE>   15
                                    EXHIBIT A

All SmartSockets software and documentation, including but not limited to:

                         SMARTSOCKETS DEVELOPMENT SYSTEM

1.  SmartSockets Development Interfaces and Libraries

        C/C++
        Java (native)
        ActiveX Components

2.  SmartSockets Run-time and Development Components

        Rtserver
        Rtmonitor

And the following products under development or consideration, if and when
released:

3.  Secure SmartSockets

        Secure SmartSockets (Kerberos Integration)
        Integration of other security products (e.g., RSA, other PKI technology)

4.  SmartSockets Queuing Products (currently under development)

        SmartQueue
        SmartQueue for IBM MQSeries
        SmartQueue for MSmq

Note: Documentation supplied contains the definitive description of the
components of the SmartSockets Development System.

                           SMARTSOCKETS DOCUMENTATION

Hard copy
FrameMaker and HTML files
Training material

                                SCOPE OF LICENSE

1.  Number of SmartSockets Development Systems:
2.  Development Platform:

                                      -15-
<PAGE>   16
                                    EXHIBIT B

                                Licensee Products

                                      -16-
<PAGE>   17
                                    EXHIBIT C

                                    Payments

               1. INITIAL LICENSE FEES.
                      a.  AMOUNT:
                      b.  DUE DATE:

               2. LICENSE FEES.
                      a.  AMOUNT:
                      b.  DUE DATE:

               3. MAINTENANCE AND SUPPORT FEES.

                      a.  AMOUNT:  $ _____ annually

                      b.  DUE DATE:

                             Initial Period:  Thirty days after Effective Date.

                             Subsequent Periods:  Ninety days prior to the
                             commencement of the support period.

                      c. LAPSE: Licensee may reinstate maintenance and support
                      services after a lapse by paying a reinstatement fee equal
                      to the maintenance and support fees for the lapsed period
                      plus the annual maintenance and support fees set forth in
                      3(a).

               4._____UPDATES AND ENHANCEMENTS.

               5._____TRAINING.

                                      -17-

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