Document:

<PAGE>   1
                             CONFIDENTIAL MATERIAL
                       OMITTED AND FILED SEPARATELY WITH
                    THE SECURITIES AND EXCHANGE COMMISSION.
                        ASTERISKS DENOTE SUCH OMISSIONS.

                             CONFIDENTIAL TREATMENT
                        PDF SOLUTIONS, INC. HAS REQUESTED
                        THAT THE MARKED PORTIONS OF THIS
                        DOCUMENT BE ACCORDED CONFIDENTIAL
                      TREATMENT PURSUANT TO RULE 406 UNDER
                     THE SECURITIES ACT OF 1933, AS AMENDED.

                                                                   EXHIBIT 10.15

INTEGRATION TECHNOLOGY AGREEMENT

        THIS INTEGRATION TECHNOLOGY AGREEMENT ("this Agreement") is made and
entered into as of ********** (the "EFFECTIVE DATE") by and between
Semiconductor Company of Matsushita Electronics Corporation, a Japanese
corporation ("CUSTOMER") and PDF Solutions, Inc., a California corporation ("PDF
SOLUTIONS").

                                TERM AND CONTACTS

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<TABLE>
<CAPTION>
Customer: Semiconductor Company,            Contact: **********
Matsushita Electronics Corporation
<S>                                         <C>
Address:  **********                        Phone:  **********

          **********                        Fax:    **********

Website: http://www.**********              E-Mail: **********
</TABLE>
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Term: This agreement shall commence on the Effective Date and shall expire on
**********, unless sooner terminated in accordance with Sections 1.2 or 1.3.

<TABLE>
<CAPTION>
<S>                                            <C>
All notices, correspondence and invoices
pertaining to this Agreement shall be
sent to the persons and addresses listed,
or such other address as the applicable
party designates by giving written notice:

   To Customer:
                                               To PDF Solutions:
   Matsushita Electronics Corporation **,
   ********************                        PDF Solutions, Inc.
   ********************                        333 West San Carlos Street
                                               Suite 700
   Phone:  **********                          San Jose, CA 95110
   Fax:    **********                          Attn:     Chief Financial Officer
                                               Tel:      (408) 938-6445
                                               Fax:      (408) 938-6478
</TABLE>
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        The parties have caused their duly authorized representatives to execute
and deliver this Agreement, which consists of this cover page, the attached
Terms and Conditions and any attached executed exhibits.

CUSTOMER                                    PDF SOLUTIONS, INC.
Matsushita Electronics Corporation
-----------------------------------

Signed: /s/ Seiji Ueda                     Signed: /s/ John K. Kibarian
       ----------------------------                -----------------------------

Printed: Seiji Ueda                        Printed: John K. Kibarian
        ---------------------------                 ----------------------------

TITLE:  Director                           TITLE:  President & CEO
      -----------------------------               ------------------------------

* Certain information on this page has been omitted and filed separately with
  the Commission. Confidential treatment has been requested with respect to the
  omitted portions.
<PAGE>   2

                              TERMS AND CONDITIONS

                        INTEGRATION TECHNOLOGY AGREEMENT

                                    RECITALS

        A. PDF Solutions possesses technology and expertise useful in
discovering, analyzing, and fixing problems in the design and manufacturing
processes that cause low yields of useable integrated circuits.

        B. Customer desires to engage PDF Solutions and receive a license to
certain technology useful to analyze its internal integrated circuit
manufacturing process, identify problems therewith, and recommend solutions
thereto, by way of methodology or otherwise, upon the terms and conditions
contained herein.

        C. PDF Solutions desires to be so engaged upon the terms and conditions
contained herein.

                                   DEFINITIONS

"Analysis" refers to all interpretations, recommendations, extractions,
statistical models or other yield and performance models developed by PDF
Solutions and derived in whole or in part from Customer's Raw Data; provided,
however, that Analysis does not include any information sufficiently detailed
that Raw Data could be feasibly re-constructed.

"Characterization Vehicle" or "CV" refers to the parameterized layout structures
or circuit elements, specific implementations of said structures or circuit
elements either in computer format or layout format (for example, GDS-II files),
and images of said structures or circuit elements, historically or hereafter
created or customized by PDF Solutions for the purposes of creating a test
vehicle used to characterize any given manufacturing process. Manufacturing
Designs are usually referenced in the process of generating CVs for the purposes
of optimizing or tuning the vehicle to the targeted designs and process. The CV
is used to create a Mask Set which is used by the fabrication facility to
generate test wafers.

"Developed Technology" refers to all methodologies, techniques, designs, problem
solving processes and practices developed by jointly by the parties in the
course of the performance of this Agreement.

"Manufacturing Designs" refers to all non-public information relating to
*****************

"Mask Set" refers to translucent glass plates used as a light filter to transfer
designs onto a wafer.

"Modified Standard Process of Customer" means the standard process of Customer
for comparison purpose which will be obtained by Customer as the result of
successful completion of this project under the Agreement."

"Permitted Field of Use" means the field of use described in Exhibit "A".

"Proprietary Rights" shall mean all intellectual property rights including, but
not limited to, patents, patent applications, copyrights, copyright
registrations, moral rights, mask work rights, rights of authorship, industrial
design rights, trademarks, tradenames, know-how and trade secrets, irrespective
of whether such rights arise under U.S. or worldwide intellectual property,
unfair competition or trade secret laws.

"PDF Technology" refers to (a) all the methodologies, techniques, software,
designs, CVs, CV layout, Design of Experiments used in creating CV layout,
problem solving processes and practices developed and utilized by PDF Solutions
(i) prior to the Effective Date of this Agreement or (ii) during the term hereof
independently of this Agreement and (b) ***********

* Certain information on this page has been omitted and filed separately with
  the Commission. Confidential treatment has been requested with respect to the
  omitted portions.

                                       2
<PAGE>   3

***

"Raw Data" shall mean the data generated by PDF Solutions using the CV in
conjunction with Customer's Manufacturing Design.

     "R&D Team" means those employees of Customer and employees of the ********
(****) who provide research and development work with respect to Customers IC
products in the pre-qualification effort or have a need to know with regards to
the development work of the pre-qualification effort.

                                    AGREEMENT

        NOW, THEREFORE, in consideration of the mutual promises herein
contained, the above recitals and other good and valuable consideration, the
receipt and sufficiency of which are hereby acknowledged, Customer and PDF
Solutions, intending to be legally bound, hereby agree as follows:

SECTION 1. TERM AND TERMINATION

        1.1 Term. This Agreement shall commence on the Effective Date and shall
expire as described in the attached cover sheet.

        1.2 Termination for Cause. This Agreement may be terminated upon thirty
(30) days prior written notice by either party if the other party materially
breaches or fails to perform any material obligations hereunder and the
breaching party fails to cure such breach within thirty (30) days of such
written notice. Notwithstanding the foregoing, the cure period for any failure
of Customer to pay Fees and Reimbursements due hereunder shall be ten (10) days
from the date of receipt by Customer of any notice of breach relating thereto.
In the event of a termination under this Section 1.2, Customer shall pay PDF
Solutions all Fixed Fees incurred through the effective date of such
termination, all Reimbursements incurred through the effective date of such
termination and, if PDF Solutions shall so terminate this Agreement, all
Incentive Fees that would otherwise have been earned had this Agreement not been
terminated shall be paid after such termination in accordance with the time
schedule and milestone objectives in Exhibit B.

        1.3 Survival of Provisions. Any and all obligations and duties which
have accrued hereunder upon such termination shall survive the termination and
remain obligations and duties of the burdened party. Additionally, Sections 3
(Payment for Services and Technology) as modified by this Section 1, 4
(Proprietary Rights), 5 (Confidentiality), 6 (Representations and Warranties), 7
(Indemnity), 8 (Limitation of Liability), 9 (Export Controls) and 10
(Miscellaneous) shall survive the expiration or sooner termination of this
Agreement and remain binding upon the parties hereto; provided that in the event
of any termination of this Agreement by PDF Solutions pursuant to Section 1.3,
any and all rights and licenses granted by PDF Solutions to Customer hereunder
shall terminate effective upon such termination.

SECTION 2. DELIVERY OF SERVICES

        2.1 Scope of Services. During the term of this Agreement, PDF Solutions
shall furnish the PDF technology and related services (the "SERVICES AND
TECHNOLOGY") described in detail in EXHIBIT "A" attached hereto (the "SCOPE OF
SERVICES AND TECHNOLOGY"). The manner and means used by PDF Solutions to provide
the Services and Technology are in the control of PDF Solutions but shall at all
times be satisfactory to Customer.

        2.2 Standard for Performance. PDF Solutions shall perform and deliver
the Services and Technology under this Agreement in accordance with the
standards and practices of care consistent with the quality of services PDF
Solutions performs for its other similarly situated clients. PDF Solutions at
all times shall

* Certain information on this page has been omitted and filed separately with
  the Commission. Confidential treatment has been requested with respect to the
  omitted portions.

                                       3
<PAGE>   4

provide such number of qualified and skilled personnel to perform and deliver
the Services and Technology in accordance with the quality standards, time
frames and other requirements set forth in this Agreement. PDF Solutions shall
utilize and comply with the relevant portions of any regulatory standards
applicable to the provision of the Services and Technology. PDF Solutions shall
promptly repair or replace at its own expense all damages, scars or
disfigurements to any materials or property that is part of, or contained in,
Customer's work site that are the result of the negligence of personnel employed
by PDF Solutions.

        2.3 Customer Assistance. Subject to Section 5 (Confidentiality),
Customer will provide PDF Solutions with such information, materials, technology
and Proprietary Rights as PDF Solutions shall reasonably require in order to
perform and deliver the Services and Technology as specified in the Scope of
Services and Technology.

        2.4 Mutual Cooperation; Schedule. Customer and PDF Solutions agree to
cooperate in good faith to achieve completion of the Services and Technology in
a timely and professional manner. Customer understands and agrees that PDF
Solutions' provision of the Services and Technology may depend on Customer or a
third party completing certain tasks or adhering to certain schedules within
Customer's control. Consequently, the schedule for completion of the Services
and Technology or any portion thereof or milestones for payment of Fees may
require adjustments or changes in the event such tasks are not completed as
anticipated. PDF Solutions shall bear no liability or otherwise be responsible
for or penalized by delays in the provision of Services and Technology or any
portion thereof proximately caused by failure by Customer or a third party to
complete a reasonable task or adhere to a reasonable schedule.

SECTION 3. PAYMENT FOR SERVICES

        3.1 Fees. As compensation for the Services and Technology, Customer
shall pay to PDF Solutions the fees ("FEES") set forth in EXHIBIT "B" attached
hereto.

        3.2 Expenses. Customer shall also reimburse PDF Solutions for its
reasonable out-of-pocket expenses incurred in carrying out its obligations under
this Agreement including, but not limited to, travel, hotel, meals, document
production and other customary business expenses directly related to the
Services and Technology ("REIMBURSEMENT"). Travel, other than trips to
Customer's office or fabrication facilities, shall be in accordance with PDF
Solution's travel policy. Reimbursement for expenses incurred in an amount of up
to $******* in any calendar month shall not require the written approval of
Customer; provided, however, that any extraordinary engagement-related purchases
including, but not limited to, expenses for mask production, equipment
purchases, on-site facilities and on-site communications services, must receive
Customer's prior written authorization. Customer shall not have any liability to
PDF Solutions for any Reimbursement for expenses incurred in an amount in excess
of $******* in any calendar month, unless such expenses are approved in writing
by both parties.

        3.3 Invoice. PDF Solutions shall bill Customer as agreed herein for
Services and Technology pursuant to an invoice delivered on a monthly basis.
Each invoice shall be accompanied by a reasonably detailed breakdown of the
invoiced amount.

        3.4 Payment of Invoices. All payments by Customer hereunder shall be
made in U.S. Dollars by telegraphic transfer to the bank designated by PDF
Solutions. All invoices shall be due and payable within **************** after
the date of invoice. Amounts not paid in accordance herewith shall be subject to
a late charge equal to ************************ (or, if less, the maximum
allowed by applicable law). Without prejudice to other remedies available, PDF
Solutions reserves the right to suspend performance and delivery of Services and
Technology until such delinquency is corrected, provided that PDF Solutions
shall give written notice of payment delinquency and

* Certain information on this page has been omitted and filed separately with
  the Commission. Confidential treatment has been requested with respect to the
  omitted portions.

                                       4
<PAGE>   5

shall give ten (10) days advance written notice of its intention to suspend
performance. The amounts payable to PDF Solutions hereunder are exclusive of any
sales or use or other taxes or governmental charges. Customer shall be
responsible for payment of all such taxes or charges except for any taxes based
solely on PDF Solutions' net income. If Customer is required to pay any taxes
based on this Section 3.4, Customer shall pay such taxes with no reduction or
offset in the amounts payable to PDF Solutions hereunder.

SECTION 4. PROPRIETARY RIGHTS

        4.1 Ownership. Customer and PDF Solutions acknowledge and agree that, as
between them, ownership shall be as follows:

                (a) PDF Solutions is the exclusive owner of all PDF Technology
and all Proprietary Rights in the PDF Technology;

                (b) Customer is the exclusive owner of all Analysis,
Manufacturing Designs, Raw Data, Modified Standard Process of Customer and all
Proprietary Rights in the Analysis, Manufacturing Design ,the Raw Data and
Modified Standard Process of Customer;

                (c) Customer and PDF Solutions shall jointly own the Developed
Technology and related Proprietary Rights and each party shall be free to
exploit Developed Technology without any obligation to account to the other
party for royalties, to share any royalties or to cooperate in the enforcement
or defense of Proprietary Rights in Developed Technology.

                (d) Customer is the exclusive owner of *****; provided, however,
that during the term of this Agreement and thereafter, such ***** may be used
only by the ***** and only within the Permitted Field of Use, and Customer will
not license, transfer or disclose the ***** to any third party or outside of the
*****.

        To the extent the law would provide for ownership other than as provided
herein, (y) Customer hereby assigns to PDF Solutions its right, title and
interest in and to the PDF Technology and the Proprietary Rights in the PDF
Technology and (z) PDF Solutions hereby assigns to Customer its right, title and
interest in and to the Analysis, Manufacturing Designs, Raw Data, Modified
Standard Process of Customer and the Proprietary Rights in the Analysis,
Manufacturing Designs and Raw Data, such Modified Standard Process of Customer
and in the Mask Sets for CVs, subject to the restrictions set forth in
Subsection (c) above.

        4.2 Grant of License by PDF Solutions. Subject to the terms and
conditions of this Agreement, including the timely payment of Fees, PDF
Solutions hereby grants to Customer, a perpetual, non-exclusive, irrevocable,
non-transferable license (without any right to sublicense) only for the
********** to use the PDF Technology and associated Proprietary Rights disclosed
by PDF Solutions under this Agreement, but only to the extent PDF Solutions has
the right to grant such license; provided that such license is solely for use of
PDF Technology by the ******** within the permitted field of use. The foregoing
license includes all PDF Technology disclosed by PDF Solutions in its work for
Customer hereunder (including methodologies and practices observed by the
******** in the course of PDF Solutions' work hereunder); provided, however,
that specifically excluded from this license of PDF Technology is any and all
software or software tools or software manuals and documentation to the extent
related to PDF Technology. Customer shall not disclose or license PDF Technology
to any third party or outside of the *******.

        4.3 Grant of License by Customer. Subject to the terms and conditions of
this Agreement, Customer hereby grants to PDF Solutions a perpetual,
non-exclusive, irrevocable, worldwide, non-transferable, license (without the
right to sublicense), but only to the extent Customer has the right to grant
such license, as follows:

                                       5

* Certain information on this page has been omitted and filed separately with
  the Commission. Confidential treatment has been requested with respect to the
  omitted portions.
<PAGE>   6

                (a) to incorporate Customer's Manufacturing Designs in CVs at
any time during the term solely for the purpose of performing under this
Agreement; and

                (b) to use, copy, compile, manipulate, analyze or reproduce Raw
Data and the Mask Sets for CVs solely for the purpose of performing under this
Agreement.

        4.4 No Other Rights. Except as otherwise set forth in this Section 4,
neither this Agreement nor performance and delivery of the Services and
Technology shall give either PDF Solutions or Customer any ownership, interest
in, or rights to, the Proprietary Rights owned or provided by the other party.

        4.5 Reference Right. Nothing in this Agreement shall be construed as
limiting the free right of Customer to refer to the Modified Standard Process of
Customer for the purpose of development and mass production of any semiconductor
products.

SECTION 5. CONFIDENTIALITY

The parties acknowledge and agree that during the course of the performance of
the mutual obligations hereunder, each party will occasionally deliver to the
other party certain information (including proprietary information, technical
data, trade secrets, know-how, research, software, developments, inventions,
processes, design flows, methods, methodologies, formulas, algorithms,
technologies, designs, drawings, engineering, hardware configuration
information, yield data or other similar information, and related documentation
and information) which the disclosing party deems to be confidential or
proprietary. Such information shall be considered and treated hereunder as
proprietary and confidential information if it is identified as "Confidential"
or "Proprietary" (hereinafter referred to as "CONFIDENTIAL INFORMATION"): (i) by
stamp or legend if communicated in writing or other tangible form, or (ii)
orally at the time of disclosure with a written confirmation within thirty days
describing the Confidential Information communicated orally. All restrictions as
to use and disclosure shall apply during such thirty day period. Except as
permitted hereunder, the receiving party shall not use or disclose the
Confidential Information of the disclosing party. Any recipient of Confidential
Information disclosed pursuant to this Agreement shall hold the Confidential
Information in strictest confidence and shall protect the Confidential
Information by using the same degree of care, but no less than a reasonable
degree of care, to prevent the unauthorized use, disclosure, dissemination or
publication of the Confidential Information as the recipient uses to protect its
own comparable confidential and proprietary information. Any permitted
reproduction of Confidential Information shall contain all confidential or
proprietary legends which appear on the original. If the disclosing party
discloses any software, the recipient is prohibited from disassembling,
decompiling, reverse-engineering or otherwise attempting to discover or disclose
the disclosing party's source code, trade secrets, ideas or methods or concepts
embodied in such software. Subject to the licenses granted in Section 4, upon
receipt of the written request of the disclosing party, the receiving party will
return, or give written certification of the destruction of all Confidential
Information in any tangible or digital form, including all copies thereof
whether on paper or in digital form, which are in the recipient's possession or
control. The recipient will immediately notify the disclosing party in the event
of any loss or unauthorized disclosure of Confidential Information. The above
restrictions on use and disclosure shall not apply to any Confidential
Information that: (1) is in the public domain or in the possession of the
recipient without restriction at the time of receipt under this Agreement
through no wrongful act or omission of the recipient, (2) is disclosed with the
prior written approval of the disclosing party, (3) is disclosed after
********** ***** from the date of expiration or earlier termination of this
Agreement, (4) is independently developed by the recipient without breach of
this Agreement which independent development is supported by reasonable
contemporary evidence, (5) becomes

* Certain information on this page has been omitted and filed separately with
  the Commission. Confidential treatment has been requested with respect to the
  omitted portions.

                                       6

<PAGE>   7
known to the recipient from a source other than the disclosing party without
breach of this Agreement by the recipient or any other wrongful act or omission
by recipient or any third party; or (6) is required to be disclosed pursuant to
law, provided the recipient uses reasonable efforts to give the disclosing party
reasonable notice of such required disclosure sufficient to give the disclosing
party the opportunity to contest such disclosure. The obligations of
confidentiality shall survive the expiration or sooner termination of this
Agreement for a period of ********** ***** thereafter. Disclosing party assumes
no responsibility or liability whatever under this Agreement for any use of
Confidential Information by the recipient or its agents. Nothing in this
Agreement shall restrict recipient's discretion to transfer or assign its
personnel, providing the obligations of recipient under this Agreement are
otherwise met. Subject to the provisions of Section 4, either party shall be
free to use for any purpose the "residuals" resulting from access to or work
with such Confidential Information, provided that such party shall maintain the
confidentiality of the Confidential Information as provided herein. The term
"residuals" means information in non-tangible form, which may be retained in the
memories (without intentional memorization) by persons who have had access to
the Confidential Information, including ideas, concepts, know-how or techniques
contained therein. Neither party shall have any obligation to limit or restrict
the assignment of such persons or to pay royalties for any work resulting from
the use of residuals. Each party hereto recognizes and agrees that there is no
adequate remedy at law for a breach of this Section 5, that such a breach would
irreparably harm the disclosing party and that the disclosing party shall be
entitled to seek equitable relief (including, without limitation, injunctions)
with respect to any such breach or potential breach in addition to any other
remedies. PDF Solutions acknowledges that Confidential Information disclosed by
Customer may include the information of ****, and some employees of **** will
participate in the ****. Customer shall be liable for the performance of
employees of **** in the **** in performing under this Agreement and also be
liable for the confidentiality obligation of **** with respect to the
Confidential Information disclosed by PDF Solutions. The parties agree that the
MUTUAL NON-DISCLOSURE AGREEMENT among PDF Solutions, Customer and **** dated the
********** (NDA) shall be superseded by this Agreement, provided, however, that
any of the Confidential Information exchanged by the parties under the NDA shall
be treated as and included in the Confidential Information under this Agreement.

SECTION 6. REPRESENTATIONS AND WARRANTIES

        6.1 Corporate Warranties. Each party hereby represents and warrants to
the other party that: (i) it is duly organized, validly existing and in good
standing under the laws of the jurisdiction in which it was organized, (ii) the
person executing this Agreement on behalf of each party is duly authorized to
bind such party to all terms and conditions of this Agreement, (iii) this
Agreement, when executed and delivered by each party, will be the legal, valid,
and binding obligation of such party, enforceable against it in accordance with
its terms, and (iv) the execution, delivery and performance of this Agreement by
each party does not and will not conflict with or constitute a breach or default
under such party's charter documents, delegations of authority, or any material
agreement, contract or commitment of such party, or require the consent,
approval or authorization of, or notice, declaration, filing or registration
with, any third party or governmental or regulatory authority.

        6.2 Infringement. PDF Solutions warrants that it is not aware of
infringement or alleged infringement of its deliverables under third parties'
valid worldwide intellectual property rights.

        6.3 Disclaimer of Warranties. THE WARRANTIES STATED IN THIS SECTION 6
ARE THE PARTIES' SOLE AND EXCLUSIVE WARRANTIES PERTAINING TO THE SUBJECT MATTER
OF THIS AGREEMENT, AND EACH PARTY HEREBY

* Certain information on this page has been omitted and filed separately with
  the Commission. Confidential treatment has been requested with respect to the
  omitted portions.

                                       7
<PAGE>   8

DISCLAIMS ANY OTHER WARRANTY, EXPRESS OR IMPLIED, WRITTEN OR ORAL, INCLUDING,
WITHOUT LIMITATION, ANY WARRANTY OF TITLE, MERCHANTABILITY, NON-INFRINGEMENT OR
FITNESS FOR A PARTICULAR PURPOSE. NOTHING UNDER THIS AGREEMENT, OR THE STATEMENT
OF WORK OR PROJECT SHALL BE DEEMED TO BE A WARRANTY AS TO THE OUTCOME OF ANY
PROJECT OR THE EFFICACY OF ANY RECOMMENDATIONS MADE BY PDF SOLUTIONS. NOTHING
UNDER THIS AGREEMENT OR THE STATEMENT OF WORK SHALL BE DEEMED TO CREATE ANY
LIABILITY ON THE PART OF EITHER PARTY WITH RESPECT TO THE OUTCOME OF A PROJECT
OR ANY ACTIONS TAKEN BY CUSTOMER OR THE PDF SOLUTIONS AS A CONSEQUENCE OF THE
OTHER PARTY'S RECOMMENDATIONS.

SECTION 7. INDEMNIFICATION. PDF Solutions shall defend or settle at PDF
Solutions' expense any claim ("Claim") brought against Customer that the
Services and Technology and/or any tangible or intangible delivered in
connection therewith impermissibly contains third party's proprietary rights,
trade secrets, or copyrighted materials or that Customer's use of any such
materials, as permitted hereunder by the ******** in the Permitted Field of Use,
infringes any patent issued in Japan; provided that such indemnification shall
not extend (a) to any infringement by Customer's designs or products, (b) to any
infringement resulting from any infringement contained in any technical data,
Manufacturing Designs, Mask Sets or materials or reports or information provided
by Customer. The indemnification obligations set forth in this Section 7 are
subject to the conditions that the Customer: (i) gives prompt written notice of
the Claim to the PDF Solutions, (ii) gives the PDF Solutions the exclusive
authority to control and direct the defense or settlement of such Claim,
provided that the PDF Solutions does not take any positions that may be
prejudicial to Customer and (iii) gives the PDF Solutions, at Customer's own
expense (except for the value of the Customer's employees' time), all reasonably
necessary information and reasonable assistance with respect to such Claim. PDF
Solutions shall pay all amounts paid in settlement and all damages and costs
awarded with respect to such Claim. PDF Solutions will not be liable for any
costs or expenses incurred without its prior written authorization. In the event
of any Claim under this Section 7, PDF Solutions shall have the option, at its
election, to (a) obtain a license to permit continued use of the allegedly
infringing item or practice, (b) modify the allegedly infringing item or
practice to avoid continued infringement provided the modified item or practice
is substantially equivalent, (c) procure or provide a substantially equivalent
substitute for the allegedly infringing item or practice or (d) if PDF Solutions
is unable to achieve (a), (b) or (c) after reasonable efforts, then PDF
Solutions may require that Customer cease use of the infringing item or practice
as soon as feasible and terminate this Agreement and refund all Incentive Fees
paid by Customer to PDF Solutions.

SECTION 8. LIMITATION OF LIABILITY

THE LIABILITY OF EITHER PARTY AND OF SUCH PARTY'S OFFICERS, DIRECTORS,
EMPLOYEES, CONTRACTORS AND AGENTS, TAKEN AS A WHOLE, WHETHER IN TORT, CONTRACT
OR OTHERWISE, AND NOTWITHSTANDING ANY FAULT, NEGLIGENCE, STRICT LIABILITY OR
PRODUCT LIABILITY OF SUCH PARTY OR OF ITS OFFICERS, DIRECTORS, EMPLOYEES, OR
AGENTS OR FAILURE OF ESSENTIAL PURPOSE, WITH REGARD TO ANY SERVICES OR OTHER
ITEMS FURNISHED UNDER THIS AGREEMENT SHALL IN NO EVENT EXCEED THE AGGREGATE
COMPENSATION PAID BY CUSTOMER TO PDF SOLUTIONS HEREUNDER. NOTWITHSTANDING
ANYTHING TO THE CONTRARY IN THIS AGREEMENT, IN NO EVENT SHALL EITHER PARTY BE
LIABLE FOR ANY CLAIM FOR ANY INDIRECT, INCIDENTAL, SPECIAL OR

* Certain information on this page has been omitted and filed separately with
  the Commission. Confidential treatment has been requested with respect to the
  omitted portions.

                                       8

<PAGE>   9

CONSEQUENTIAL DAMAGES, COVER OR ANY LOSS OF DATA, PROFIT, REVENUE OR USE UNDER
ANY THEORY OF LAW OR FOR ANY CAUSE OF ACTION.

SECTION 9. EXPORT CONTROL

        9.1 Both parties acknowledge that certain technical information
disclosed by PDF Solutions to Customer hereunder may be subject to the export
control laws or regulations of the U. S. A. PDF Solutions shall be responsible
for obtaining any export license required under such laws or regulations with
respect to the export of any Confidential Information, and shall promptly notify
Customer in writing the technical information which is subject to the
restrictions under such laws or regulations as well as the type of license to
have been obtained.

        9.2 In the event that a Japanese governmental authorization is required
for the disclosure of technical information under this Agreement, Customer will
not disclose such information until Customer obtains such authorization.

SECTION 10. MISCELLANEOUS

        10.1 Publicity. Neither party shall disclose the existence of or the
terms of this Agreement to any third party, or in any manner advertise or
publish statements to such effect, without the prior written consent and mutual
agreement as to the content, medium, and manner of the public announcement of
the other party. Notwithstanding the above, should one of the parties be
required by laws or regulations to disclose either the existence or terms of
this Agreement to a court of law, a governmental agency, an auditor, a bank, or
any person such party may do so without the prior written consent of the other
party provided that the disclosing party: (i) notifies the recipient of the
confidential nature of the information, (ii) requests confidential treatment of
such information, (iii) limits the disclosure to only such information as is
required under the circumstances, and (iv) delivers prompt notice to the other
party of such requested or actual disclosure.

        10.2 Assignment. Neither party shall assign any portion of its rights,
duties, or obligations under this Agreement without the prior written consent of
the other party, which consent will not be unreasonably withheld or delayed,
provided that PDF Solutions may utilize the services of consultants and
subcontractors to perform hereunder with the prior written consent of Customer.

        10.3 Changes. No modification to this Agreement will be binding unless
in writing and signed by a duly authorized representative of each party. Change
orders affecting any Scope of Services and Technology will not be effective
until reviewed and approved in writing by PDF Solutions and Customer. PDF
Solutions will submit to Customer a report on how the proposed changes will
affect the current Services and Technology including the effect on the time
schedule and cost estimates. The parties will have no obligation to proceed with
changed work until both parties have approved the change in writing.

        10.4 Notices. All notices or corres-pondence pertaining to this
Agreement shall be in writing, delivered by either first class mail with receipt
or by facsimile with receipt. Such notice shall be effective upon the earlier of
actual receipt or the expiration of three business days following the date of
mailing, or such alternative address the parties may designate in the future.

        10.5 Independent Contractors. PDF Solutions and Customer shall perform
their obligations under this Agreement as independent contractors, and nothing
contained in this Agreement shall be construed to create or imply a joint
venture, partnership, principal-agent or employment relationship between the
parties. Neither party shall take any action or permit any action to be taken on
its behalf which purports to be done in the name of or on behalf of the other
party and shall have no power or authority to bind the other party to assume or
create any obligation or responsibility express or implied

                                       9
<PAGE>   10

on the other party's behalf or in its name, nor shall such party represent to
any one that it has such power or authority. Each party shall be responsible for
damages to tangible property or personal injury cause by the gross negligence or
willful misconduct of the employees or agents of such party.

        10.6 Force Majeure. Neither party shall be liable to the other party for
any loss, damage, or penalty arising from delay to the extent due to causes
beyond its reasonable control including acts of God, acts of government, war,
riots, or embargoes.

        10.7 Severability. If any term or provision of this Agreement is
determined to be invalid or unenforceable for any reason, it shall be adjusted
rather than voided, if possible, to achieve the intent of the parties to extent
possible. In any event, all other terms and provisions shall be deemed valid and
enforceable to the maximum extent possible.

        10.8 Insurance. PDF Solutions shall carry Workers' Compensation and
Comprehensive General Liability Insurance (including Products, Contractual, and
Automobile Liability) having limits of liability not less than $1 million
combined single limit per occurrence for bodily injury, including death and
property damages, prior to performing any services on Customer's site.

        10.9 Disputes. If any claim or controversy arises out of this Agreement,
the parties shall first make a good faith attempt to resolve the matter through
a designated executive officer. The officers having cognizance of the subject
matter of the Agreement for each of the parties shall first meet and make a good
faith attempt to resolve such controversy or claim. In the event such good faith
negotiation fails to settle any dispute within ********** days from notice of
such dispute, the controversy shall be settled by binding arbitration by one or
three arbitrators, (if three are used, each party shall select one, and the
third shall be selected by mutual agreement of the parties), conducted in Santa
Clara County, California, if Customer initiates the proceedings, and in Osaka,
Japan, if PDF Solutions initiates the proceeding, and in accordance with the
Commercial Arbitration Rules of the American Arbitration Association and
judgment upon the award rendered by the arbitrator(s) may be entered by any
court having jurisdiction thereof. The arbitrator(s) shall not be empowered to
award damages in excess of, and/or in addition to, actual damages, and the
arbitrator(s) shall deliver a reasoned opinion in connection with his/her/their
decision. Nothing herein, however, shall prohibit either party from seeking
injunctive relief if such party would be substantially prejudiced by a failure
to act during the time that such good faith efforts are being made to resolve
the claim or controversy. In the event either party seeks injunctive relief, the
parties agree that jurisdiction will be before a state or district court seated
in Santa Clara County, California.

        10.10 Governing Law. This Agreement and any and all disputes arising
hereunder shall be governed by the internal laws of the State of California,
without regard to choice of law principles. This Agreement is prepared and
executed and shall be interpreted in the English language only, and no
translation of the Agreement into another language shall have any effect. The
parties agree that the United Nations Convention on Contracts for the
International Sale of Goods (1980) is specifically excluded from and shall not
apply to this Agreement.

        10.11 Waiver. The failure of any party hereto to enforce at any time any
of the provisions of this Agreement or to require at any time performance by the
other party of any of the provisions of this Agreement, or any part hereof,
shall not be construed to be a waiver of said provision or to effect the right
of any party to enforce each and every provision in accordance with the terms of
this Agreement.

        10.12 Interpretation. In the event that any term of the Scope of
Services and Technology conflicts with the terms of this Agreement, the terms of
this Agreement shall take precedence.

* Certain information on this page has been omitted and filed separately with
  the Commission. Confidential treatment has been requested with respect to the
  omitted portions.

                                       10

<PAGE>   11

        10.13 Non-Solicitation. Customer shall not actively solicit or influence
or attempt to influence any person employed by PDF Solutions to terminate or
otherwise cease his or her employment with PDF Solutions or become an employee
of Customer. PDF Solutions shall not actively solicit or influence or attempt to
influence any person employed by Customer to terminate or otherwise cease his or
her employment with Customer or become an employee of PDF Solutions.

        10.14 Drafter. Neither party will be deemed the drafter of this
Agreement, which Agreement will be deemed to have been jointly prepared by the
parties. If this Agreement is ever construed, whether by a court or by an
arbitrator, such court or arbitrator will not construe this Agreement or any
provision hereof against any party as drafter.

        10.15 Entire Agreement. The parties acknowledge that PDF Solutions is
not providing or licensing to Customer under this Agreement any software
programs or products and anticipate that they will enter into a Software
Evaluation and/or Software License Agreement related to the subject matter
hereof. Such agreement shall also not be affected by this Agreement. Except for
such software agreements, this Agreement shall constitute the entire agreement
between the parties with respect to the subject matter hereof and: (i) shall
supersede all prior contemporaneous oral or written communications, proposals
and representations with respect to its subject matter, and (ii) shall prevail
over any conflicting or additional terms of any statement of work, quote, order
acknowledgment or similar communication between the parties during the term of
this Agreement.

        10.16 Counterparts. This Agreement may be executed in counterparts, each
of which shall be deemed an original, but all of which together will constitute
one and the same instrument.

        10.17 Exhibits. Exhibits "A" and "B" attached hereto are incorporated
herein by this reference as if fully set forth herein.

PDF SOLUTIONS, INC., A CALIFORNIA CORPORATION

By: /s/ John K. Kibarian
   --------------------------------
Name: John K. Kibarian
     ------------------------------
Title: President & CEO
      -----------------------------
Date:   **********
     ------------------------------

CUSTOMER

By: /s/ Seiji Ueda
   --------------------------------
Name: Seiji Ueda
     ------------------------------
Title: Director
      -----------------------------
Date:   **********
     ------------------------------

* Certain information on this page has been omitted and filed separately with
  the Commission. Confidential treatment has been requested with respect to the
  omitted portions.

                                       11

<PAGE>   12

                 EXHIBIT "A" TO INTEGRATION TECHNOLOGY AGREEMENT
                        SCOPE OF SERVICES AND TECHNOLOGY
--------------------------------------------------------------------------------

PERMITTED FIELD OF USE

PDF Solutions agrees to provide Customer with **********************************
**************************************************************.  The Agreement,
and all licenses granted by PDF Solutions to Customer under the Agreement,
extends only *******************************************************************
*********.

PROJECT PHASES & DESCRIPTION

The project is described below in the following three phases. Phases may be
amended upon written notice to more appropriately achieve the targeted project
goals.

<TABLE>
<CAPTION>
------------- ------------------------------------------------- ----------------------
PROJECT PHASE                 GENERAL WORK STEPS                  ESTIMATED DURATION
------------- ------------------------------------------------- ----------------------
<S>           <C>                                               <C>
**********    ***********************************************        **********
**********    ***********************************************        **********
              ***********************************************        **********
              ***********************************************
              ***********************************************

------------- ------------------------------------------------- ----------------------
**********    ***********************************************        **********
**********    ***********************************************        **********
              ***********************************************        **********
              ***********************************************
              ***********************************************

------------- ------------------------------------------------- ----------------------
**********    ***********************************************        **********
**********    ***********************************************        **********
              ***********************************************        **********
              ***********************************************
              ***********************************************

------------- ------------------------------------------------- ----------------------
</TABLE>

* Certain information on this page has been omitted and filed separately with
  the Commission. Confidential treatment has been requested with respect to the
  omitted portions.

                                       12
<PAGE>   13

                 EXHIBIT "A" TO INTEGRATION TECHNOLOGY AGREEMENT
                        SCOPE OF SERVICES AND TECHNOLOGY
--------------------------------------------------------------------------------

DELIVERABLES

PDF Solutions agrees to provide Customer the following deliverables:

<TABLE>
<CAPTION>
----------- ----------------------------------------------------------------
  PHASE                             DELIVERABLE
----------- ----------------------------------------------------------------
<S>         <C>
**********  **************************************************************
**********  **************************************************************
            **************************************************************

----------- ----------------------------------------------------------------
**********  **************************************************************
**********  **************************************************************
            **************************************************************

----------- ----------------------------------------------------------------
**********  **************************************************************
**********  **************************************************************
            **************************************************************

----------- ----------------------------------------------------------------
</TABLE>

PROJECT ACCOUNTABILITY

PDF Solutions will maintain an engagement manager to lead the project effort
throughout the duration of the project. PDF Solutions' engagement manager
currently assigned to the project is **********. Customer will also maintain a
project leader to lead the project effort and Customer team. ********** will
serve as the primary point of contact for Customer's project leader or other
Customer representatives regarding project status and updates.

REPORTS AND DOCUMENTATION

PDF Solutions agrees to provide at minimum ***** updates to Customer's Project
Leader. PDF Solutions will provide a formal presentation at the conclusion
***************.

REQUIREMENTS FROM CUSTOMER

To assist in the success completion of the project, Customer's cooperation to
support the following as reasonably required by PDF Solutions:

- Business Resources: Secure and private office space (with 24 hour access) and
  other customary and reasonable business resources as required. Reasonable and
  customary communication and business resources including, but is not limited
  to, international access telephones, multiple analog lines, international
  access fax machines and access to a photocopier.

- Computing Resources: Customary and reasonable computing resources as required.

- CVs: Customer agrees to run PDF Solution's characterization vehicles.

- Engineering Resources: Customer's engineering resources as required.

* Certain information on this page has been omitted and filed separately with
  the Commission. Confidential treatment has been requested with respect to the
  omitted portions.

                                       13
<PAGE>   14

GENERAL

Customer agrees to pay *** types of fees associated with the services and
technologies rendered with the Integration Technology Agreement.

1. A fixed fee ("Fixed Fee") component, and

2. **********

FIXED FEE

PDF Solutions shall invoice Customer the Fixed Fee on a monthly basis. The Fixed
Fee rates will be as follows:

1. *****************************************************************************
   ******************************************.
2.

Customer shall pay such invoices in accordance with this Agreement. If the term
of this Agreement is extended with prior written approval, both parties may
elect to continue services under this Agreement at a Fixed Fee ***************.

INCENTIVE FEE

PDF Solutions may earn **************** as follows:

<TABLE>
<CAPTION>
--- -------------- -------------- ------------------------------------------
    INCENTIVE FEE   INCENTIVE FEE  INCENTIVE FEE MILESTONE OBJECTIVE(S)
      DUE DATE          AMOUNT
--- -------------- -------------- ------------------------------------------
<S> <C>            <C>            <C>
 1  **********              ***** ***************************************
                                  ***************************************
                                  ***************************************
                                  ***************************************

--- -------------- -------------- ------------------------------------------
 2  **********             *****  ***************************************
                               *  ***************************************
                                  ***************************************
                                  ***************************************

--- -------------- -------------- ------------------------------------------
 3  **********             *****  ***************************************
                               *  ***************************************
                                  ***************************************
                                  ***************************************

--- -------------- -------------- ------------------------------------------
</TABLE>

**************************************

Customer's obligation to pay the Incentive Fee shall be contingent on
satisfaction of the applicable milestone objective(s). PDF Solutions cannot
pre-earn any incentive; each milestone must be achieved during the time frame
applicable to such incentive payment. Should conditions beyond the control of
PDF Solutions result in an inability to achieve incentive(s) including, but not
limited to, delays in Customer

* Certain information on this page has been omitted and filed separately with
  the Commission. Confidential treatment has been requested with respect to the
  omitted portions.
<PAGE>   15

process roll-out plans, both parties agree to adjust either the Incentive Fee
milestones, Incentive Fee deadlines or both as required.

PRODUCT VOLUME EXCLUDED FROM INCENTIVE FEE CALCULATIONS

The following wafers shall be excluded from the calculation of the defect
density in determining Incentive Fees:

- Mis-processed wafers

- Wafers adversely affected by equipment failures or malfunctions

- Wafers adversely affected by non-qualified PM (preventative maintenance)
  adjustments. Non-qualified means new equipment introduced but not verified to
  process tolerances. Customer and PDF Solutions agree to review the
  qualification process within forty-five (45) days of Effective Date. Customer
  may elect not to make any changes suggested by PDF Solutions that are deemed
  unreasonable or beyond Customer's control.

- Zero yielding wafers traceable to equipment failures, malfunction, or PM cycle
  dependency.

- Operator errors

- Mishandled wafers during processing or test.

- Scrapped wafers

- Failures caused by tester malfunction, test program inadequacy, or measuring
  beyond the capability of the tester.

If products under this Agreement contains a design *****************************
**************************************************

********************************************************************************
********************************************************************************
********************************************************************************
********************************************************************************

Wafers included or excluded in the yield calculations may be modified provided
both Customer's designated Project Manager and PDF Solutions' designated
Engagement Manager agree to the modifications in writing.

YIELD MODEL

For the purposes of this Agreement, the yield model equation used in determining
Incentive Fees when appropriate will be the ************************************
******************************.

* Certain information on this page has been omitted and filed separately with
  the Commission. Confidential treatment has been requested with respect to the
  omitted portions.<PAGE>   1
                             CONFIDENTIAL TREATMENT
                        PDF SOLUTIONS, INC. HAS REQUESTED
                        THAT THE MARKED PORTIONS OF THIS
                        DOCUMENT BE ACCORDED CONFIDENTIAL
                      TREATMENT PURSUANT TO RULE 406 UNDER
                     THE SECURITIES ACT OF 1933, AS AMENDED.

                                                                   EXHIBIT 10.16

                                 [cadence logo]

                         SOFTWARE OEM LICENSE AGREEMENT

                                     BETWEEN

                               PDF SOLUTIONS, INC.

                                       AND

                          CADENCE DESIGN SYSTEMS, INC.

                          EFFECTIVE DATE: July 7, 2000

                                  AGREEMENT NO.

                                       1
<PAGE>   2

                                      INDEX

<TABLE>
<CAPTION>
Section  Description                                                        Page
-------  -----------                                                        ----
<S>      <C>                                                                <C>
         RECITAL...........................................................   3

1.0      DEFINITIONS.......................................................   3

2.0      APPOINTMENT.......................................................   5

3.0      DELIVERY AND ACCEPTANCE...........................................   5

4.0      LICENSE GRANT.....................................................   5

5.0      MAINTENANCE, TRAINING AND ENHANCEMENTS............................   6

6.0      MARKETING AND PROMOTION...........................................   7

7.0      FEES..............................................................   7

8.0      SOURCE CODE ESCROW................................................   8

9.0      PROTECTION OF CONFIDENTIAL INFORMATION............................   8

10.0     WARRANTY AND INDEMNIFICATION......................................   9

11.0     TERM AND TERMINATION .............................................  10

12.0     GENERAL...........................................................  10
</TABLE>

EXHIBITS:

Exhibit A   - Products and Designated Equipment
Exhibit B   - Maintenance and Support Services
Exhibit C   - Fees and Payment
Exhibit D   - Software Deposit Agreement
Exhibit E   - Cadence standard form of license agreement
Exhibit F   - Trademark Specifications

                                       2
<PAGE>   3

                                 [cadence logo]

                         SOFTWARE OEM LICENSE AGREEMENT

                          Effective Date: July 7, 2000

                                  Agreement No:

This Software OEM License Agreement ("Agreement") is entered into effective as
of the date set forth above by and among, on the one hand, CADENCE DESIGN
SYSTEMS, INC., a Delaware corporation having a principal place of business at
555 River Oaks Parkway, San Jose, California 95134, and CADENCE DESIGN SYSTEMS
(IRELAND) LIMITED, a corporation organized and existing under the laws of
Ireland having a place of business at Block U, East Point Business Park, Dublin
3, Ireland (collectively with its Subsidiaries, as defined below, "Cadence"),
and, on the other hand, PDF Solutions, Inc., a California corporation, having a
principal place of business at 333 W. San Carlos Street, Suite 700, San Jose CA
95110 ("VENDOR").

WHEREAS Cadence develops and markets software application programs used in the
electronic design automation industry for the computer-aided engineering,
design, co-verification, simulation, and layout of advanced electronic circuits,
printed circuit boards and electronic systems and subsystems; and

WHEREAS Vendor has developed certain computer programs and desires to grant
Cadence rights to commercially exploit such programs on a world-wide basis in
combination with certain software and systems which Cadence develops and/or
distributes; and

WHEREAS Cadence is willing, subject to the terms of this Agreement, to market,
distribute and sublicense Vendor's programs as stand alone products, or in
combination or for use with the software and systems which Cadence develops or
distributes;

NOW THEREFORE in consideration of the mutual promises herein contained the
parties hereby agree as follows:

1.0 DEFINITIONS.

        In addition to the terms defined elsewhere in this Agreement, the
following terms have the following meanings:

        1.1 "Ancillary Work" means any software code written by or for Cadence
(and not by Vendor) for the purpose of tightly integrating the Licensed Work as
an integral and functioning part of Cadence's product framework environment
and/or to meet unique requirements of an End User, or provide new or improved
features, functionality or enhancements to the Licensed Work.

        1.2 "Cadence" means Cadence and its world-wide Subsidiaries and the
successors and assigns of any of them.

        1.3 "Designated Equipment" means computer hardware contained in one of
the equipment product families listed on Exhibit A and all improved and enhanced
versions of such equipment, and also including the operating system environment
with which Cadence's products operate. At the request of either party from time
to time, the parties shall amend Exhibit A to reflect expansions and extensions
of the product families there represented and will in good faith negotiate the
inclusion of additional product lines.

        1.4 "Documentation" means all data sheets, user manuals and/or education
and training materials in human or machine readable form, and all Maintenance
Modifications and Enhancements thereto which: (i) document the design or details
of the Product(s); and/or (ii) explain the capabilities of the Product(s);
and/or (iii)

                                       3
<PAGE>   4

provide operating instructions for using the Product(s).

        1.5 "End User" means an entity that acquires the Licensed Work for its
internal production use.

        1.6 "Enhancement" means any modification(s), revision(s), upgrade(s) or
addition(s) to a Product made by or on behalf of Vendor (other than a
Maintenance Modification) that improves its function, adds new function(s) or
substantially enhances its performance, including, without limitation, new
versions of the Products. Enhancements shall include updates to the
Documentation.

        1.7 "Error(s)" means any malfunction or defect in the Products and/or a
mistake in the Documentation that prevents the Product from correctly operating
in substantial conformance with its functional specifications, including,
without limitation, any significant deviation from commonly accepted standards
for normal and correct operation of computer programs, even if not explicitly
mentioned in the Documentation, e.g., any case where the Product, in any
significant respect, abnormally ceases function, produces incorrect or
misleading information or erroneously interprets information given to it, and
similar deviations.

        1.8 "Fees" means the fees that Cadence shall pay to Vendor for the
rights granted hereunder, as more specifically described in Section 7 below.

        1.9 "Licensed Work(s)" means the Products and Documentation
collectively.

        1.10 "Maintenance Modification" means any modification(s), revision(s)
or addition(s) to the Products necessary to: (i) correct Errors; or (ii) support
new releases of the Designated Equipment or subsequent revisions of its
operating system; or (iii) update a Product to ensure its continuing
compatibility with versions of Cadence's product(s) it is intended to be used
with, if any; or (iv) other modification(s) or addition(s) which are not
Enhancements. Maintenance Modifications shall include correction to
Documentation.

        1.11 "Marketing Agent(s)" means those distributors, dealers, resellers,
representatives, affiliates or Subsidiaries with whom Cadence enters into a
contractual relationship for the express purpose of engaging such entity to
market to End-Users the Licensed Work or other Cadence products which include
the Licensed Works.

        1.12 "Net Maintenance Revenues" means the portion of gross revenues
recognized by Cadence that is directly attributable to the sale of maintenance
services directly related and apportioned to the Licensed Works, net of
Marketing Agent commissions, refunds, commodity taxes, value added taxes, sales
taxes, and provision for bad debt. Net Maintenance Revenues specifically
excludes revenues recognized by Cadence from the sale or provision of
maintenance services related to or in connection with Licensed Works that are
provided to persons for evaluation or demonstration purposes only.

        1.13 "Net Product Revenues" means the portion of gross revenues
recognized by Cadence that is directly attributable to the sale or license of
the Licensed Works, net of Marketing Agent commissions, returns, commodity
taxes, value added taxes, sales taxes, and provision for bad debt. Net Product
Revenues specifically excludes revenues recognized by Cadence from any Licensed
Works that are provided to persons for evaluation or demonstration purposes
only.

        1.14 "Product(s)" means the Vendor software product(s), in object code
form, as specified in Exhibit A, including any Maintenance Modifications and/or
Enhancements thereto.

        1.15 "Subsidiary" means a corporation, limited liability company,
partnership, joint venture, company, unincorporated association or other entity
in which more than fifty percent (50%) of the outstanding shares, securities or
other ownership interest (representing the right to vote for the election of
directors or other managing authority or the right to make the decisions for
such entity, as applicable) is, now or hereafter, owned or controlled, directly
or indirectly, by a party hereto. Such corporation, company or other entity
shall be deemed to be a Subsidiary only so long as such ownership or control
exists.

        1.16 "Term" means the initial term and any renewal term of this
Agreement as specified in Section

                                       4
<PAGE>   5

11.1 below.

2.0 APPOINTMENT.

        2.1 Subject to the terms and conditions if this Agreement, Vendor hereby
appoints Cadence as its non-exclusive OEM for the delivery of Licensed Works to
End Users world-wide, and Cadence hereby accepts such appointment.
Notwithstanding the foregoing, during the Term of this Agreement, Cadence is
hereby authorized to distribute the Licensed Work known as "Circuit Surfer" on
an exclusive basis provided however, that Vendor retains the right to license
Circuit Surfer to those customer sites where (1) Cadence's Analog Design
Environment (or other replacement name for the product currently called "Analog
Artist")product is not installed and there is no reasonable likelihood for the
license of Analog Design Environment for a period of ninety (90) days from the
date that PDF notifies Cadence of the opportunity as specified in 6.2, or (2)
such license of Circuit Surfer is made solely in connection with and solely
during the period of time during which Vendor is providing yield improvement
services to a customer

        2.2 Cadence shall arrange for delivery of Licensed Works to the End
Users and providing End Users maintenance support of Licensed Works, through
Cadence's usual channels for distribution and maintenance. Cadence will pay
Vendor the license and maintenance fees as more fully described in Section 7.

3.0 DELIVERY AND ACCEPTANCE.

        3.1 Initial Delivery, Acceptance Tests and Corrections. For the initial
Licensed Work, each additional Licensed Work and each major revision thereof,
Vendor shall deliver to Cadence a copy of the Licensed Work in accordance with
the delivery schedule mutually agreed upon by the parties. Cadence shall have
sixty (60) days after the initial delivery of the Product to perform such tests
Cadence deems reasonably necessary to determine whether such version meets the
specifications and performance standards represented by Vendor and is capable of
performing repetitively in a variety of situations without failure (the
"Acceptance Standards"). Cadence shall promptly notify Vendor if Cadence
determines that the Product does not meet the Acceptance Standards. Vendor shall
then have thirty (30) days to modify or improve such Product version, at
Vendor's expense, so that it performs in accordance with the Acceptance
Standards and to redeliver it to Cadence. Cadence shall have a second sixty (60)
day test period to reconduct the acceptance tests. Failure of the Product to
meet the Acceptance Standards shall constitute a material breach by Vendor.

        3.2 Acceptance Date. If and when the acceptance tests establish that the
Product is performing in accordance with the Acceptance Standards, Cadence shall
promptly notify Vendor in writing that it accepts that Product version (the
"Acceptance Date"). Within ten (10) days of the Acceptance Date Vendor shall
deliver to Cadence: (i) one (1) reproducible master copy of the Product, and
(ii) a camera ready hard copy of the Documentation, with a collation guide for
printing and reproduction together with an electronic soft copy of the
Documentation in FrameMaker, Word, PostScript format or as otherwise specified
by Cadence. Vendor shall deliver the Licensed Works to Cadence on such media and
format as Cadence specifies. It is the intent of the parties that Vendor shall
provide Cadence a "golden master" copy of the Licensed Work from which Cadence
can thenceforth replicate, without intervention or assistance from Vendor,
additional copies of the Products and Documentation as necessary to exercise the
grants of Section 4.

        3.3 Test Plan. Vendor and Cadence shall use reasonable efforts to
develop as soon as possible following the execution of this Agreement a test
plan and quality assurance plan necessary for the development of the acceptance
tests to verify a Product's conformance to the Acceptance Standards.

4.0 LICENSE GRANT.

        4.1 Distribution License. Subject to the terms and conditions of this
Agreement, Vendor hereby grants Cadence a non-exclusive, worldwide, fully-paid
right and license (sublicenseable at any level),

                                       5
<PAGE>   6
for the Term of this Agreement, to use, copy, reproduce, market, display,
perform and distribute externally and to prepare derivative works including
Ancillary Works of the Licensed Work. Such right and license includes the right
and license of Cadence to sublicense and distribute copies of Licensed Work and
derivative works including Ancillary Work to End Users world-wide and under the
same forms of license and maintenance agreements Cadence uses with respect to
the licensing of, and providing maintenance for, its own proprietary software
products, and to permit End Users to copy the Products or Documentation as is
necessary in connection with their internal use of the Products on the
Designated Equipment. A copy of Cadence's current form of license agreement is
attached hereto as Exhibit E.

        With respect to the source code of the Licensed Work, effective
currently but exercisable only if and when the source code is released from
escrow in accordance with Section 8 hereof, Vendor hereby grants to Cadence the
non-exclusive, irrevocable, perpetual (except where earlier termination is
provided in Section 8 hereof), worldwide royalty free, fully-paid right and
license to modify and prepare derivative works of the source code, to replicate
the source code, and to use the source code, including such modifications
internally, in each case solely to fulfill Vendor's maintenance and support
obligations hereunder. The object code version of such revisions, enhancements
and derivative works may be distributed to End Users under maintenance or if
otherwise permitted under Section 8, as included in "Products". The parties
expressly agree that a derivative work shall not include a new software product
that would not constitute a Product hereunder. If upon the release of the source
code from escrow, Cadence requests that Vendor continues to perform maintenance
hereunder, Vendor shall use reasonable efforts to continue to perform its
maintenance obligations hereunder and payment of maintenance fees to Vendor
shall continue for so long as Vendor has maintenance obligations hereunder.
Cadence shall license to Vendor those enhancements or modifications Cadence
makes to the source code of the Licensed Work during the time Vendor so performs
maintenance obligations hereunder, following source code release from escrow, on
an non-exclusive basis, irrevocable, perpetual, worldwide, royalty-free, fully
paid basis.

        4.2 Internal Use License. Vendor hereby grants Cadence and its Marketing
Agents a non-exclusive, non-sublicenseable, perpetual, fully paid, royalty free,
worldwide right and license to internally use the Licensed Works for the
purposes of technical support, quality assurance, manufacturing, testing,
demonstration, training, marketing and other tasks incidental to and reasonably
necessary in connection with: (a) carrying out the distribution activities of
Section 4.1; and (b) supporting End Users in their use of the Products
sublicensed to them by Cadence and/or its Marketing Agent(s). The internal use
described in the preceding sentence shall be at no charge or Fee to Cadence.

        4.3 Ownership. Title to and ownership of the Licensed Works shall not be
modified by this Agreement and shall at all times remain with Vendor or Vendor's
suppliers. Title to and ownership of all derivative works made by Cadence,
including Ancillary Works and modifications thereof, shall be held exclusively
by Cadence. Vendor and its suppliers, shall have no rights in, or license to use
any Ancillary Works in any manner without the express prior written permission
of Cadence.

        4.4 Exclusivity. Subject to Section 2.1 above, the licenses granted to
Cadence hereunder are exclusive solely with respect to Vendors Circuit Surfer
product;

5.0 MAINTENANCE, TRAINING AND ENHANCEMENTS.

        5.1 Maintenance and Training Services. Vendor will provide Cadence with
the maintenance and training services described on Exhibit B hereto. All
references to Exhibit B include Exhibit B-1 if applicable. Vendor's maintenance
and support obligations hereunder and under Exhibit B shall survive termination
of this Agreement for whatever reason for a period of two years. The maintenance
and support obligations of Vendor following the termination or expiration of
this Agreement are for wind-down purposes only, and accordingly shall consist of
the error corrections and second level telephone support as provided for in
Exhibit B. Such continuing obligations will not include any upgrades to the
Licensed Works.

        5.2 Maintenance Modifications, Enhancements. Within thirty (30) days
after the execution of this Agreement, each party shall designate, and notify
the other party in writing of, a company representative; both persons together
shall comprise a steering committee ("Steering Committee") whose function shall
be to evaluate the functionality and overall performance of the Licensed Works
and Products and determine the need for additional functionality, features,
Maintenance Modifications and Enhancements with respect thereto in a mutually
agreed upon schedule. The Steering Committee shall meet at least once each
calendar quarter during the Term of this Agreement in the performance of its
functions. Vendor shall develop all Maintenance Modifications and Enhancements
so agreed upon by the Steering Committee. Vendor shall provide Cadence, at no
charge, all Maintenance Modifications and Enhancements of the Licensed Works and
related Documentation created by or for

                                       6
<PAGE>   7

Vendor during the term of this Agreement on or before the date Vendor's first
release of such Maintenance Modifications and/or Enhancements to any of its
other distributors, OEM's, marketing partners or end customers. Such Maintenance
Modifications and Enhancements shall, upon their availability, automatically
become part of the Licensed Work(s) for the purpose of this Agreement.

5.3 Directed Development and Services. The steering Committee shall also
determine enhancements, new features and services that benefit Cadence customers
but may not benefit non-Cadence users of Circuit Surfer. During the first year
of this Agreement, a Vendor software engineer will work at Cadence's research
and development facility agreed upon by the parties at least twenty (20) hours
per week for the purposes of performing the development work described in this
section. The parties intend that the majority of the development efforts during
the first year of the term of this Agreement will be directed toward integrating
the Licensed Works with the Cadence Product. Fees for such development and
services are specified in Exhibit C.

6.0 MARKETING AND PROMOTION.

        6.1 Control of Marketing. The means by which Cadence markets and
distributes the Licensed Work shall be in Cadence's sole discretion and control,
including without limitation the methods of pricing, marketing, naming,
packaging, labeling, advertising, and collection of fees. Cadence may distribute
the Licensed Work world-wide through any combination of direct marketing,
Marketing Agents, original equipment manufacturers, and other means, and either
alone or in combination with other products.

        6.2 Referral of Inquiries. *********************************************
********************************************************************************
********************************************************************************
********************************************************************************
********************************************************************************
********************************************************************************
********************************************************************************
******************************************.

        6.3 CADENCE MAKES NO WARRANTY OR REPRESENTATION CONCERNING THE SUCCESS
OF SUCH MARKETING AND DISTRIBUTION EFFORTS. VENDOR AGREES THAT CADENCE SHALL IN
NO CIRCUMSTANCES BE LIABLE TO VENDOR FOR ANY LOST PROFITS, OR FOR ANY OTHER
INDIRECT, SPECIAL, OR CONSEQUENTIAL DAMAGES ARISING UNDER ANY LEGAL THEORY OUT
OF OR IN CONNECTION WITH THIS AGREEMENT.

        6.4 Sales Support. Vendor agrees to provide Cadence sufficient sales and
technical support, as mutually agreed upon by the parties, including but not
limited to Vendor personnel proficient in the performance, use, implementation
and modification of the Licensed Works and Products (collectively, "Sales
Support"), as Cadence may reasonably require with respect to the training of its
Marketing Agent(s) to sell and market sublicenses to the Licensed Works and/or
Products to customers and/or potential End Users hereunder. Such Sales Support
shall be at no charge to Cadence.

        6.5 Marketing Support. Vendor agrees to provide Cadence sufficient
marketing training, as mutually agreed upon by the parties, such that Cadence
can support ("Marketing Support") marketing events (e.g., industry conferences,
business/trade shows, marketing seminars, presentations and/or demonstration for
key customers or strategic accounts). Such Marketing Support shall be at no
charge to Cadence.

        6.6 Trademarks and Copyrights. Vendor hereby grants to Cadence (and its
applicable subcontractors) a non-exclusive license to use the trademarks and
logos set forth on Exhibit F (the "Trademarks") in connection with the
manufacture, distribution, license and promotion of the Licensed Works. However,
Vendor agrees that Cadence need not use the Trademarks and may, in its
discretion, market and distribute the Products under Cadence's own trademarks.
If Cadence uses the Trademarks, then the use of such Trademarks shall conform
with all trademark

* Certain information on this page has been omitted and filed separately with
  the Commission. Confidential treatment has been requested with respect to the
  omitted portions.

                                       7
<PAGE>   8

specifications of Vendor for such Trademarks, which specifications are attached
hereto as Exhibit F. If Cadence manufactures the Products, then Cadence shall
cause the manufacture of the Products to conform to the reasonable quality
standards of Vendor for the manufacture of the Products and Vendor may review
the Products manufactured by Cadence, upon reasonable notice to Cadence, to make
sure that such quality standards are met. Except for the use of the Trademarks
however, the packaging design, and advertising for the Licensed Products shall
be within the discretion and control of Cadence. Vendor represents and warrants
to Cadence that it is not aware and has not received notice of any infringement
or claim of infringement of any Trademark upon any rights of any third party
anywhere in the world. Cadence shall replicate Vendor's copyright notices (as
they appear or as designated by Vendor) in any Product and Documentation
reproduced under this Agreement. Use of Vendor's Trademarks shall inure to the
benefit of Vendor.

        6.7 Drop Shipment. If Cadence does not manufacture the Products and
Vendor drop ships the Products, then the drop shipment box on Exhibit A shall be
checked.

7.0 FEES.

        7.1 Amount. Cadence shall pay to Vendor Fees on revenues from the
Licensed Work distributed by Cadence to End Users or Marketing Agents, as
applicable, under the terms of Exhibit C hereto.

        7.2 Payments, Quarterly Reports. Fees shall be remitted on a ***** basis
within ********** following the end of Cadence's ********** during which Cadence
recognized revenues for the Licensed Work to which the Fee payment applies.
Cadence will deliver written reports to Vendor within *************** after the
last day of each ********** stating: (i) the amount of Net Product Revenues
recognized during the *****; and (ii) the amount of Net Maintenance Revenues
recognized during that same *****, and (iii) the resulting Fees due. Cadence
will enclose with the report the Fee payment so calculated.

        7.3 Records and Audit. Cadence agrees that it shall maintain records
sufficient to establish the Fees payable pursuant to this Section 7. Vendor may,
with prior written notice and during normal business hours, have independent
certified public accountants acceptable to Cadence examine, at Vendor's expense,
Cadence's records relating to the Fees payable pursuant to this Agreement. Such
accountants must agree in advance in writing to maintain in confidence and not
to disclose to any party any information obtained during the course of such
examination, other than a disclosure to Vendor of the amounts of Fees that
should have been paid for the period covered by the examination. Any errors
discovered during such examination shall be corrected by the appropriate party.
In no event shall any such adjustment be made more than two (2) years after the
end of the period in error. The audit right contained in this Section may not be
exercised more than once during any 12 month period.

8.0 SOURCE CODE ESCROW.

        8.1 Deposit. Within ten (10) days of the Acceptance Date, Vendor shall,
at Vendor's expense, place the complete Licensed Work source code ("Source Code
Materials") into escrow with an independent third party escrow holder. The form
of escrow deposit agreement to be used is attached hereto as Exhibit D.
Throughout the Term of this Agreement, Vendor shall update the Source Code
Materials at least once every six months to include Maintenance Modifications
and Enhancements, so that the deposit at all times reflects the most current
version of the Licensed Work distributed by Cadence hereunder.

        8.2 Release Event. If Vendor materially breaches its obligations under
this Agreement, including, without limitation, its obligations under Exhibit B
(all as more fully set forth in the escrow deposit agreement), Cadence may
retrieve the Source Code Materials and use same to fulfill Vendors obligations
hereunder respecting the Licensed Work and otherwise continue to exercise the
license grants of Section 5. If the source code is released from escrow Cadence
may (i) fully exercise its source code license rights granted in Section 4.1
hereof, solely for purposes fulfilling Vendor's support and maintenance
obligations hereunder regarding the Licensed Work, and (ii) if the release event
occurred during the Term, continue to exercise the license grants of Section 4
as if this Agreement continued in full force and effect for the full Term
(initial or then applicable renewal) as if such Term

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  the Commission. Confidential treatment has been requested with respect to the
  omitted portions.

                                       8
<PAGE>   9

had continued. Upon release of the source code from escrow all other terms and
conditions of this Agreement shall continue to apply, including Cadence's
obligation to pay product and maintenance fees. The license to the source code
granted herein shall be irrevocable but shall expire five years after the
occurrence of a release event

        8.3 Escrow Termination. The escrow shall continue and survive on its own
terms independent of the existence of this Agreement and shall terminate on the
fifth (5th) anniversary of the termination of this Agreement, if no release
event has occurred prior thereto, or such other date as mutually agreed upon by
the parties in writing.

9.0 PROTECTION OF CONFIDENTIAL INFORMATION.

        9.1 The parties acknowledge that: (i) Licensed Work in the case of
Vendor; and (ii) Ancillary Works in the case of Cadence; and/or (iii) any other
information which the parties desire to exchange to conduct the activities
contemplated by this Agreement, which the revealing party ("Discloser") holds in
confidence or received from a third party under confidentiality obligations
("Proprietary Materials"), are confidential information of the Discloser. Except
as permitted under this Agreement, the receiving party ("Recipient") shall treat
Discloser's Proprietary Materials that are prominently marked with a notice in
human readable form noting their confidential nature, with the same standard of
care that Recipient uses to safeguard its own proprietary materials from
unauthorized access, use, disclosure or dissemination. Proprietary Materials
disclosed orally or visually shall be identified as confidential prior to the
discussion or presentation, then furnished to Recipient in tangible form within
thirty (30) days thereof and marked as confidential.

        9.2 Recipient's obligations respecting Discloser's Proprietary Materials
shall terminate with respect to any part thereof which Recipient can establish
by documentary evidence: (i; (ii) now or hereafter may be in the public domain
by acts not attributable to Recipient; (iii) was rightfully in the possession of
or known to Recipient prior to its receipt from Discloser under this Agreement;
(iv) is or becomes available without restriction to Recipient from a source
independent of Discloser who was in lawful possession of same and authorized to
disclose it to Recipient without restriction; or (v) is agreed to be
unrestricted by Discloser in writing.

        9.3 Nothing herein shall restrict Recipient's right to disclose the
Proprietary Materials where such disclosure is required by written order of a
judicial, legislative, or administrative authority of competent jurisdiction, or
is necessary to establish its rights under this Agreement, provided, however
that, in each case, Recipient will, if practicable, first notify Discloser of
such need or requirement and cooperate with Discloser, at Discloser's expense,
in limiting the scope of the proposed disclosure. Recipient will assist
Discloser, at Discloser's expense, in taking all reasonable steps for obtaining
further appropriate means of limiting the scope of the required disclosure of
Discloser's Proprietary Materials.

        9.4 Within ten (10) days of the earlier of (i) receipt of Discloser's
written request for return of same (other than the Licensed Work), or (ii) the
termination or expiration of this Agreement (except as and to the extent
otherwise provided herein); Recipient shall return all Discloser's Proprietary
Materials along with Recipient's certification that to the best of its knowledge
all Discloser's Proprietary Materials have either been returned or destroyed and
no Discloser Proprietary Materials, or copies thereof, remain in the possession
of Recipient, its employees or agents; provided, however, that Cadence as
Recipient may retain such of Vendor's Proprietary Materials as Cadence may
reasonably require to provide the support and maintenance obligations of Vendor
for the Licensed Works to its customers. Recipient's obligations set forth in
this Section 9 shall terminate on the ********************** of the termination
or expiration of this Agreement, excluding those obligations with respect to the
source code placed in escrow pursuant to Section 8 above which shall terminate
on the ************ of the termination or expiration of this Agreement.

        9.5 Equitable Relief. Each party acknowledges that unauthorized
disclosure or use of the Proprietary Materials may cause irreparable harm to the
other party for which recovery of money damages would be inadequate, and the
other party shall therefore be entitled to obtain timely injunctive relief to
protect the other party rights under this Agreement in addition to any and all
remedies available at law.

* Certain information on this page has been omitted and filed separately with
  the Commission. Confidential treatment has been requested with respect to the
  omitted portions.

                                       9
<PAGE>   10

10.0 WARRANTY AND INDEMNIFICATION.

        10.1 Vendor warrants and represents that: (i) it has the right and power
to enter into this Agreement, and that doing so does not violate or conflict
with any other Vendor obligations; and (ii) Vendor shall not assume any
obligation or restriction which would, in any way, interfere, be inconsistent
with or present a conflict of interest concerning the rights granted to Cadence
hereunder or the services to be performed by Vendor under this Agreement.

        10.2 Vendor warrants and represents that: (i) the Licensed Works and
Vendor's services which are the subject matter of this Agreement are the
original product of Vendor and Vendor is the sole and exclusive owner of the
Licensed Works; and (ii) that no portion of such items, or their distribution or
use is protected by or infringes any third party(ies)'s US patent, patent
applications, copyright, trade secret, trademark.

        10.3 Vendor warrants and represents that the Licensed Works, and all
Maintenance Modifications and Enhancements thereto shall conform to and perform
in accordance with Vendor's published specifications therefor.

        10.4 Vendor warrants and represents that the Licensed Work is designed
to be used prior to, during and after the calendar year 2000 A.D., and that the
Licensed Work will operate during each such time period without error relating
to date data, specifically including any error relating to, or the product of,
date data which represents or references different centuries or more than one
century. Without limiting the forgoing, Vendor represents and warrants that (i)
the Licensed Work will properly manage and manipulate data involving dates,
including single-century and multi-century formulas, and will not abnormally
end, or cause an abnormally ending scenario, within the application or generate
incorrect values or invalid results involving such dates; and (ii) the Licensed
Work has been designed to ensure year 2000 compatibility, including, without
limitation, date data century recognition, calculations which accommodate same
century and multiple century formulas and date values, and date data interface
values that reflect the century, and (iii) the Licensed Work provides that all
date-related user interface functionalities and data fields include the
indication of the century, and that all date-related data interface
functionalities include the indication of the century, and (iv) handle all leap
years, including, without limitation, the year 2000 leap year, correctly. Vendor
shall promptly advise Cadence of any breach of the above warranty.

        10.5 Vendor agrees to indemnify and hold Cadence, its Marketing Agents
and End Users entirely harmless from any and all losses, costs, claims, damages,
settlements and judgments, including, without limitation, any expenses and
attorneys' fees, arising out of or related in any way to any breach or alleged
breach of any of the above warranties. Cadence agrees to defend and indemnify
Vendor from and against any and all losses, costs, claims, damages, settlements
and judgments, including without limitation, any expenses and attorneys' fees
arising out of any action brought against Vendor alleging that a Cadence
software product utilized with the Licensed Work infringes any US patent,
copyright or trade secret. If any claim or action is commenced against a party
entitled to indemnification under this Section, (a "Claim"), such party shall
give written notice to the other party within ten (10) days of notice of such
Claim. If such party receiving notice is obligated under this Section to defend
the party against such Claim, then the indemnifying party shall take control of
the defense and investigation of the Claim, using such attorneys and other
assistance as it selects in its discretion. The indemnified party shall
cooperate in all reasonable respects in such investigation and defense,
including trial and any appeals, provided that such party may also participate,
at its own expense, in such defense. No settlement of a Claim that involves a
remedy other than payment of money by indemnifying party shall be agreed to and
entered without the consent of the indemnified party, which consent shall not be
unreasonably withheld.

        10.6 EXCEPT AS EXPRESSLY SET FORTH IN THIS SECTION 10, THE LICENSED
WORKS, ENHANCEMENTS, MAINTENANCE MODIFICATIONS, AND SERVICES PROVIDED BY VENDOR
ARE PROVIDED "AS IS," AND TO THE MAXIMUM EXTENT PERMITTED BY APPLICABLE LAW,
VENDOR DISCLAIMS ALL OTHER WARRANTIES, EXPRESS AND IMPLIED, INCLUDING WITHOUT
LIMITATION WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE (EVEN
IF VENDOR IS ADVISED OF SUCH PURPOSE) AND NON-INFRINGEMENT.

        10.7 EXCEPT FOR A BREACH OF AN OBLIGATION OF CONFIDENTIALITY, TO THE
MAXIMUM EXTENT PERMITTED BY APPLICABLE LAW, UNDER NO CIRCUMSTANCES SHALL

                                       10
<PAGE>   11

EITHER PARTY BE LIABLE TO THE OTHER FOR ANY CONSEQUENTIAL, INCIDENTAL, INDIRECT
OR PUNITIVE DAMAGES IN CONNECTION WITH THIS AGREEMENT, OR ITS SUBJECT MATTER,
INCLUDING WITHOUT LIMITATION DAMAGES FOR LOSS OF PROFITS OR REVENUES, OR THE
COST OF PROCUREMENT OF SUBSTITUTE GOODS AND/OR SERVICES, REGARDLESS OF THE LEGAL
OR EQUITABLE BASIS FOR SUCH DAMAGES, WHETHER IN CONTRACT, TORT OR OTHERWISE,
EVEN IF SUCH PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. COSTS
AND EXPENSES ASSOCIATED WITH ANY CLAIM FOR WHICH A PARTY HAS AN OBLIGATION TO
INDMENIFY THE OTHER PARTY PURSUANT TO SECTION 10.5 SHALL NOT BE CONSIDERED
CONSEQUENTIAL DAMAGES

11.0 TERM AND TERMINATION.

        11.1 Term. The initial term of this Agreement shall be for a period
commencing upon the effective date first set forth above and ending three (3)
years thereafter. This Agreement shall subsequently automatically renew, and
thereafter re-renew for additional terms of one (1) year each unless terminated
by either party, providing the other one-hundred eighty (180) days written
notice prior to the end of the then current term.

        11.2 Termination. This Agreement may be terminated at any time:

                11.2.2 For Cause. By either party at any time immediately upon
written notice to the other party in the event the other party fails to observe
or perform a material obligation of this Agreement (a "Default"), which Default
is not cured within thirty (30) days after the non-defaulting party has given
written notice of the Default and demanded its cure.

        11.3 Effect of Termination. Upon non-renewal or termination of this
Agreement for any reason, all rights and licenses previously granted to End
Users shall continue in full force and effect and Vendor shall (continue to
provide Cadence all Licensed Work and support services necessary to enable
Cadence and Marketing Agents to fulfill its continuing obligations to End User's
respecting the Licensed Work for a period of two years following such
termination. The maintenance and support obligations of Vendor following the
termination or expiration of this Agreement are for wind-down purposes only, and
accordingly shall consist of the error corrections and second level telephone
support as provided for in Exhibit B. Such continuing obligations will not
include any upgrades to the Licensed Works.

        11.4 Survival. The provisions of Sections 4.2, 4.3, 4.5 (and Exhibit E),
5.1 (and Exhibit B), 6.3, 7(until all amounts due and owing have been paid), 8
(and other provisions of this Agreement (including Exhibits) as contemplated
therein), 9, 10, 11.3 (and the provisions of Section 7 to the extent
applicable), 11.4 and 12, along with any other provision which by its terms
continues after termination, shall survive the termination of this Agreement.

12.0 GENERAL.

        12.1 Relationship. The relationship between the parties under this
Agreement is that of independent contractors, and nothing contained in this
Agreement shall be construed to constitute either party as an agent, partner, or
joint venturer of the other.

        12.2 Rights. Nothing in this Agreement shall be construed as prohibiting
or restricting: (i) either partyfrom independently developing or acquiring
products which are competitive, irrespective of the similarity to or
substitutability for theother party's products; or (ii) the rights which the
parties have outside the scope of this Agreement; or (iii) the rights of either
party to make, have made, use, lease, license, sell or otherwise dispose of any
particular product(s) not herein described subject to the restrictions set forth
in Section 9.

        12.3 Notices. All notices, demands or consents required or permitted
hereunder shall be delivered in writing to the respective parties at the
addresses set forth above, and, in the case of Cadence, to the attention of the
General Counsel, or at such other address as shall have been given to the other
party in writing for the purposes of

                                       11
<PAGE>   12

this clause. Such notices shall be deemed effective upon the earliest to occur
of: (i) actual delivery; or (ii) five (5) calendar days after mailing (airmail
for international mailings), addressed and postage prepaid, return receipt
requested (except for international mailings); or (iii) one (1) day after
transmission by fax, if to Cadence to (408) 944-0215, and if to Vendor, to
(408)280-7915.

        12.4 Assignment. Neither this Agreement nor any rights hereunder, in
whole or in part, shall be assignable or otherwise transferable by either party
without the express written consent of the other party. However, the foregoing
notwithstanding, an assignment by either party in connection with the transfer
of all, or a substantial portions of its assets, product lines or businesses, or
by reason of acquisition, merger, consolidation or operation of law shall not
require consent. Subject to the above, this Agreement shall be binding upon and
inure to the benefit of the successors and assigns of the parties hereto.

        12.5 Severability, Waiver or Amendment. If any Agreement provision is
determined by a court of competent jurisdiction to be contrary to law, the
remaining provisions of this Agreement will continue in effect. No waiver,
amendment or modification of any provision hereof shall be effective unless in
writing and signed by the party against whom such waiver, amendment or
modification is sought to be enforced. No failure or delay by either party in
exercising any right, power or remedy hereunder shall operate as a waiver of any
such right, power or remedy.

        12.6 Rights and Remedies Cumulative. Except as expressly provided
herein, the rights and remedies provided in this Agreement shall be cumulative
and not exclusive of any other rights or remedies provided at law, in equity or
otherwise.

        12.7 Government Provisions. When the Licensed Works are to be furnished
to the United States Government, or, to an End User for use on a subcontract
under a United States Government prime contract (collectively a "Government
Contract"), Vendor agrees to comply with provisions that are contained in the
Government Contract, insofar as Cadence is required by law or regulations to
flow down or otherwise make such provisions applicable to Vendor as a
supplier/subcontractor of Cadence.

        12.8 Excusable Delays; Force Majeure. Neither party shall be responsible
for any delay in or failure to deliver or perform any obligations which is due
to circumstances beyond that party's reasonable control. In the event of any
such failure or delay, the time of performance shall be extended for a period
equal to the time lost by reason of the delay.

        12.9 Governing Law. This Agreement is made under, governed by, and shall
be construed in accordance with the laws of the state of California, excluding
its choice of laws rule, as applied to contracts between California corporations
entered into and to be performed entirely in California. The prevailing party in
any judicial action brought to enforce or interpret this Agreement or for relief
for its breach shall be entitled to recover its costs and its reasonable
attorneys' fees incurred to prosecute or defend such action.

        12.10 Entire Agreement. The provisions of this Agreement and the
Exhibits hereto, which are incorporated herein by this reference, except for
Exhibit D which is a separate agreement, constitute the entire agreement between
the parties in connection with the subject matter hereof and supersede all prior
and contemporaneous agreements, understanding, negotiations and discussions,
whether oral or written, between the parties hereto with respect to the subject
matter hereof.

        12.11 Counterparts. This Agreement may be executed simultaneously in two
or more counterparts, each of which will be considered an original, but all of
which together will constitute one and the same instrument.

        12.12 Export. Vendor will notify Cadence from time to time of all export
classifications for the Licensed Works (including ECCNs) and all unusual export
requirements of which they are aware. Each party will comply with all applicable
laws in the performance of this Agreement.

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                                       12
<PAGE>   13

        IN WITNESS WHEREOF the parties have entered into this Agreement
effective as of the year and date first set forth above.

CADENCE DESIGN SYSTEMS, INC.                VENDOR:

By: /s/ R.L. SMITH MCKEITHEN                 By: /s/ P.S. MELMAN
   --------------------------------             --------------------------------

Name:   R.L. Smith McKeithen                 Name:   P.S. Melman
     ------------------------------               ------------------------------

Title:  Sr. V.P. & General Counsel           Title:  Chief Financial Officer
      -----------------------------                -----------------------------

Date:   July 7, 2000                         Date:   July 7, 2000
     ------------------------------               ------------------------------

CADENCE DESIGN SYSTEMS (IRELAND) LIMITED

By: /s/ R.L. SMITH MCKEITHEN
   --------------------------------

Name:   R.L. Smith McKeithen
     ------------------------------

Title:  Director
      -----------------------------

Date:   July 7, 2000
     ------------------------------

                                       13
<PAGE>   14

                                    EXHIBIT A

                        PRODUCTS AND DESIGNATED EQUIPMENT

REF: Software OEM Agreement
Dated:
================================================================================

1. DESCRIPTION OF PRODUCTS AND DOCUMENTATION.

<TABLE>
<CAPTION>
Product Name         Description
------------         -----------
<S>                  <C>
Circuit Surfer       Circuit Surfer is a software program for the analysis and
                     optimization of parametric yield/performance issues in
                     analog and mixed/signal circuits.
</TABLE>

        1.1 New Products. If Vendor develops or commercially offers a program
("New Product") that may be complementary to either the above Products or other
programs marketed by Cadence, Vendor will use commercially reasonable efforts to
give Cadence the right of first refusal to market the New Product pursuant to
this Agreement. In addition, Vendor agrees to use reasonable efforts to
preferentially select Cadence for the distribution of such New Products. In the
event the New Product is one which Cadence desires to include in its program
offerings, the parties shall negotiate in good faith to include the New
Product(s) at mutually agreeable prices.

2. DESIGNATED EQUIPMENT.

        The Products shall operate on the following equipment product families
and operating system version level on which the programs that Cadence offers on
such equipment operate: Solarisx.x, HPUXx.x, and operating system version level
on which Cadence programs may operate currently and in the future.
****************************
*********************************.

3. DROP SHIPMENT.

[ ] If the box is checked the parties agree that Vendor will drop ship the
Products to End Users (or Marketing Agents, as applicable) worldwide, as
designated by Cadence from time to time, and at no charge to Cadence.

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* Certain information on this page has been omitted and filed separately with
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  omitted portions.

                                       14
<PAGE>   15

                                    EXHIBIT B

                        MAINTENANCE AND SUPPORT SERVICES

REF: Software OEM Agreement
Dated:
================================================================================

1.0 MAINTENANCE.

        1.1 FOR CADENCE.

                1.1.1 Error Correction. Vendor will use its commercially
reasonable efforts to provide a Maintenance Modification to correct any Errors
in the Licensed Works reported by Cadence. Such response shall include as
appropriate: (i) reviewing the Error with Cadence; and (ii) gathering additional
information about the Error; and (iii) analyzing the Error to determine its
cause; and (iv) providing an Error solution if already known; and (v) where
required providing a Maintenance Modification. Maintenance Modifications will be
delivered promptly to Cadence at no additional cost. Vendor shall provide
Cadence with an estimate of how long it will take to correct the Error(s)
reported by Cadence and shall keep Cadence informed of the progress of the
problem resolution.

                1.1.2 Error Classification & Response: Cadence will notify
Vendor when Errors are discovered. Cadence and Vendor will classify Errors by
severity as: "Fatal ", preventing a Product from performing any useful work; or
"Severe Impact ", disables major function(s); or "Degraded Operations ", Errors
disabling non-essential functions; or "Minor ", all other Errors. Vendor's
response remedy shall be in three levels defined as follows: (i) Level 1,
Cadence's receipt of Vendor's written confirmation acknowledging Vendor's
receipt of the Error report; and (ii) Level 2, Cadence's receipt of Vendor's
patch, workaround or temporary fix including Documentation changes; and (iii)
Level 3, Cadence's receipt of Vendor's official fix or update, including
applicable Documentation changes. The response/correction timetable shall be as
follows, wherein a day shall be considered to be a workday. Vendor shall use
commercially reasonable efforts to meet the timeframes set forth below.

                          Response/Correction Timetable

<TABLE>
<CAPTION>
Severity              Level 1      Level 2              Level 3
--------              -------      -------              -------
<S>                   <C>          <C>                  <C>
Fatal                 *****        ***************      **********
Severe Impact         *****        ***************      **********
Degraded Operations   *****        ***************      **********
Minor                 *****        ***************      **********
</TABLE>

                1.1.3 Telephone Support: Provide reasonable telephone support to
Cadence on an as-needed basis. Vendor shall maintain a telephone hotline service
to enable Cadence to obtain a quick response to any Errors with the Licensed
Work. Service Hot lines, at a minimum, must be attended during the hours from
9:00 a.m. to 5:00 p.m. Pacific Standard Time, Monday through Friday excluding
standard Vendor holidays.

                1.1.4 Fees for Such maintenance services shall be specified in
Exhibit C.

                1.1.5 Vendor shall use reasonable efforts to provide to Cadence
sufficient advance notice of any planned Maintenance Modification or
Enhancements to the Products(s)

        1.2 FOR END USERS:

                1.2.1 Vendor agrees to support its existing end users until such
time as Cadence and Vendor put a support plan in place and transition such
customers to Cadence.

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                                       15
<PAGE>   16

        1.2.2 After 2.1 is satisfied, or such other date as mutually agreed upon
by the parties in writing, Cadence shall be responsible for providing "first
line" maintenance and support services directly to End Users in accordance with
the terms and conditions of the End User Software Maintenance Agreement attached
hereto as Exhibit B1. During this time, Vendor shall continue to provide "second
line" maintenance and support services to Cadence, consistent with the terms and
conditions of Section 1.1 of this Exhibit B, and such other maintenance and
support services as Cadence may reasonably require in order to fulfill and
satisfy its maintenance and support obligations to End Users.

2.0 TRAINING.

        2.1 Cadence Internal. During the Term of this Agreement, Vendor shall
provide training to Cadence and its Marketing Agents' personnel. Such training
shall cover, without limitation, the following topics in detail: (i)
installation and configuration procedures, (ii) operating, usage and performance
characteristics of the Product, (iii) Error diagnosis and isolation. Such
training shall be without charge to Cadence, shall consist of at least one
courses per release, and shall be conducted at such facilities with such
schedule as is mutually agreeable, except however Cadence shall reimburse Vendor
for its out of pocket costs for the instructor's travel, lodging and meal
expenses for training held at Cadence's facilities. Additionally, if any of the
foregoing topics are covered in regularly scheduled classes held at Vendor's
facilities, then Cadence or its Marketing Agents' personnel who are engaged in
the marketing, sales, integration or support of the Products may attend any such
course(s) at no charge, provided however Cadence shall be responsible for the
travel and living expenses of its course attendees.

        2.2 End User training. Cadence shall be responsible for selling and
delivering End User training in a manner consistent with other Cadence products.
Cadence may desire to contract PDF to do the training. PDF will provide the
training material and reasonable consultation necessary for Cadence to develop a
production customer training class.

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                                       16
<PAGE>   17

                                    EXHIBIT C

                                FEES AND PAYMENT

REF: Software OEM Agreement
Dated:
================================================================================

1. FEES.

        Cadence shall pay Vendor the following amounts in Fees:

<TABLE>
<CAPTION>
------ ----------------- -----------
 YEAR    LICENSE FEES     DATE DUE
------ ----------------- -----------
<S>    <C>               <C>
   1    ***************    *****
          **********       *****

------ ----------------- -----------
   2    ***************    *****
          **********       *****

------ ----------------- -----------
   3    ***************    *****
          **********       *****

------ ----------------- -----------
</TABLE>

*Payment terms of **********.

        1.2 Maintenance Fees. Cadence shall pay to Vendor the fees for the
maintenance and support services set forth on Exhibit B, in accordance with the
schedule set forth below:

<TABLE>
<CAPTION>
------ ------------------ -----------
 YEAR   MAINTENANCE FEES   DATE DUE
------ ------------------ -----------
<S>    <C>                <C>
   1     ***************    *****
           **********       *****

------ ------------------ -----------
   2     ***************    *****
           **********       *****

------ ------------------ -----------
   3     ***************    *****
           **********       *****

------ ------------------ -----------
   4     ***************    *****
           **********       *****

------ ------------------ -----------
   5     ***************    *****
           **********       *****

------ ------------------ -----------
</TABLE>

*Payment terms of **********.

* Certain information on this page has been omitted and filed separately with
  the Commission. Confidential treatment has been requested with respect to the
  omitted portions.

                                       17
<PAGE>   18

        1.3 Development Fees. Cadence shall pay to Vendor the following minimum
fees for development services that may be provided by Vendor under Section 5.2
of the Agreement:

<TABLE>
<CAPTION>
------ -------------------------- -----------
 YEAR   MINIMUM DEVELOPMENT FEES   DATE DUE
------ -------------------------- -----------
<S>    <C>                        <C>
   1         ***************        *****
               **********           *****

------ -------------------------- -----------
   2         ***************        *****
               **********           *****

------ -------------------------- -----------
   3         ***************        *****
               **********           *****

------ -------------------------- -----------
</TABLE>

*Payment terms of **********.

         ***********************************************************************
********************************************************************************
********************************************************************************
********************************************************************************
******************************************.

        1.3 Prices. The parties agree that Cadence shall be free to determine
its prices to its customers.

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* Certain information on this page has been omitted and filed separately with
  the Commission. Confidential treatment has been requested with respect to the
  omitted portions.

                                       18
<PAGE>   19

                                    EXHIBIT D

                           SOFTWARE DEPOSIT AGREEMENT

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                                       19
<PAGE>   20

                                    EXHIBIT E
                       STANDARD FORM OF LICENSE AGREEMENT

                                       20
<PAGE>   21

                                    EXHIBIT F

                            TRADEMARK SPECIFICATIONS

REF:  Software OEM Agreement
Dated:
================================================================================

1. TRADEMARK SPECIFICATIONS.

The following are the trademark specifications for the Trademarks:
______________________ of Vendor.

        [CONTENT TO BE PROVIDED BY VENDOR IN DIFFERENT SIZES AND SCALED]

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                                       21

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