Document:

<PAGE>

                                                                   Exhibit 10.25

                     Contract Change Notice/Amendment No. 1
                                       to
                  TRW Inc./Endwave Corporation Supply Agreement
                               Agreement No. 1C450

     THIS AMENDMENT ("Amendment") is made and entered into and between Endwave
Corporation ("Buyer" or "Endwave") and TRW Inc. ("TRW").

     WHEREAS, Buyer and TRW entered into a Supply Agreement No. 1C450
("Agreement") with an effective date of 31 March 2000 and;

     WHEREAS, Buyer and TRW desire to amend the Agreement in order to modify the
product offering, delivery date span, pricing/volume methodology and applicable
Exhibits, in addition to administrative updates inclusive of those sections for
term, notices and marking provisions.

NOW THEREFORE, the parties agree to amend the Agreement as follows:

1.   Section 2.2, Requirements, of Article 2, replace the sentence with the
     following: "Buyer shall buy from TRW no less than the quarterly minimum
     quantities of Products set forth in Exhibit 1B, and TRW agrees to sell
     Buyer up to and including quarterly maximum quantities of Products set
     forth in such Exhibit; provided however, to the extent that Buyer wishes to
     purchase more than the annual maximum quantities of the Products as
     provided in Exhibit 1B, TRW may, but is under no obligation to, provide
     Buyer such excess quantities."

2.   Article 3, Effective Date and Term, replace time in which this Agreement
     shall remain in force and effect from March 31, 2003" to "December 31,
     2005."

3.   Section 4.5, Acceptance of Orders, of Article 4, replace the third sentence
     with the following:

     "Notwithstanding the foregoing, TRW shall have no obligation to accept and
     shall not be deemed to have accepted, unless signed by TRW, any Order (i)
     for any Products not listed in Exhibit 1A hereto or revisions thereof; (ii)
     for any quantity of Products in excess of the annual maximum quantities
     specified in Exhibit 1B hereto or revisions thereof; or (iii) that
     specifies a delivery date which is less than [*] weeks from the date of
     such Order; provided, however, that Buyer may designate up to [*] lots per
     calendar year as "Hot Lots", which will be delivered within [*] weeks of
     the Order date, which cannot exceed [*] lots per month, and which cannot
     exceed [*] wafers per lot. Any designated "Hot Lots" in excess of [*] lots
     per calendar year shall be subject to TRW approval."

4.   Section 10.1, Event of Default, of Article 10, replace Paragraph (b) with
     the following:

     "(b) Such party fails to perform its minimum purchase or supply obligations
     (as the case may be hereunder) specified in Section 2.2 hereof during any
     quarter during the term hereof, or otherwise fails to perform any other
     material obligation required to be performed by it under any provision of
     this Agreement within thirty (30) days after the time specified or within
     thirty (30)days after written notice from the other party that such
     performance has become due; provided, however, Buyer shall have no right to
     terminate this Agreement for TRW's default so long as corrective action is
     being diligently pursued by TRW in a manner that demonstrates that TRW's
     obligations hereunder shall be completed in sufficient time to allow Buyer
     to reasonably meet its end-use requirements for Products without incurring
     additional costs or penalties (as reasonably determined by Buyer), and TRW
     disclosed to Buyer in writing such corrective action(s)."

     [*] CERTAIN INFORMATION IN THIS EXHIBIT HAS BEEN OMITTED AND FILED
     SEPARATELY WITH THE COMMISSION. CONFIDENTIAL TREATMENT HAS BEEN REQUESTED
     WITH RESPECT TO THE OMITTED PORTIONS.

                                                                               1

<PAGE>

5.   Article 12, Notices, revise point of contacts as follows:

     If to TRW:         Velocium, TRW, Inc.
                        2221 Park Place
                        El Segundo, CA 90245
                        Attention: Paul U. Klintworth
                        Phone: 310-814-6739
                        FAX:   310-812-7011

     If to Buyer:       Endwave Corporation
                        990 Almanor Avenue
                        Sunnyvale, CA 94085
                        Attention: Don Dodson
                        Phone: 408-522-3117
                        FAX:   408-522-3102

6.   Section 14.3, Marking, of Article 14, revise listing of individuals
     authorized to receive Proprietary Information as follows:

     For Buyer:         Don Dodson, Bryson Wallace, Doug Lockie, Ed Stoneham,
                        Simon Mok, Mark Vaughan, Cliff Mohwinkel

     For  TRW:          Dwight Streit, Frank Kropschot, Al Lawrence, Stacey Bui,
                        Maggie Sarkuni, Paul Klintworth

7.   EXHIBIT 1A, LIST OF PRODUCTS, as included as part of the original Agreement
     is deleted and replaced with the EXHIBIT 1A - REVISION 1 (copy attached)_.

8.   EXHIBIT 1B, PRICE, QUANTITY COMMITMENTS, DELIVERY SCHEDULE AND BUYER'S
     SITE, as included as part of the original Agreement is deleted and replaced
     with the EXHIBIT 1B - REVISION 1 (copy attached).

9.   Attachment B: Wafer Processing Price Matrix, as included as part of the
     original Agreement is deleted and replaced with the Attachment B - Revision
     1: Wafer Processing Price Matrix/Wafer Volume (copy attached).

10.  Attachment C: Wafer Test Price Matrix ($/Wafer), as included as part of the
     original Agreement is deleted and replaced with the Attachment C - Revision
     1: Wafer Test Price Matrix ($/Wafer) (copy attached).

11.  Attachment D: Wafer Purchase Commitment, as included as part of the
     original Agreement is deleted and replaced with the Attachment D -
     Developmental Lot Price Matrix (copy attached).

     [*] CERTAIN INFORMATION IN THIS EXHIBIT HAS BEEN OMITTED AND FILED
     SEPARATELY WITH THE COMMISSION. CONFIDENTIAL TREATMENT HAS BEEN REQUESTED
     WITH RESPECT TO THE OMITTED PORTIONS.

                                                                               2

<PAGE>

The above changes constitute Contract Change Notice No. 1 to the Agreement.
Except as expressly provided hereinabove all other terms and conditions of the
Agreement shall apply herein and remain in full force and effect as previously
agreed to between Buyer and TRW. In the event of any conflict between the terms
of this Amendment and those of the Agreement, the terms of this Amendment will
be deemed to have superseded those of the Agreement and exclusively will govern
the matter in question.

Endwave Corporation:                             TRW Inc.

By:    /s/ Don Dodson                            /s/ Dwight Streit
       ----------------------------              -------------------------------
Name:  Don Dodson                                Dwight Streit
Title: Chief Operating Officer                   President, Velocium

Date:  March 15, 2002                            Date: February 21, 2001
       ----------------------------                    -------------------------

     [*] CERTAIN INFORMATION IN THIS EXHIBIT HAS BEEN OMITTED AND FILED
     SEPARATELY WITH THE COMMISSION. CONFIDENTIAL TREATMENT HAS BEEN REQUESTED
     WITH RESPECT TO THE OMITTED PORTIONS.

                                                                               3

<PAGE>

                             EXHIBIT 1A - REVISION 1

                                LIST OF PRODUCTS
                                ----------------

1a.  3" equivalent GaAs wafers utilizing the following process technologies
     (Application frequency refers to frequency of transmission of end product):

     Technology                        Application
     ----------                        -----------
     pHEMT 0.15 micron                 [*]
     pHEMT 0.10 micron                 [*]
     HBT 4 micron                      [*]
     HBT 2 micron                      [*]
     HBT 1 micron                      [*]

     Standard wafer processing with die thickness of .004" will be utilized.
     Wafers will be screened via standard Process Control Monitors ("PCM"). All
     PCM good wafers will be delivered to Buyer and Buyer will accept delivery.

1b.  3" equivalent GaAs wafers noted in 1a. above except a die thickness of [*]
     will be quoted on a case-by-case basis at the sole discretion of the
     Seller.

1c.  Developmental Products to include InP devices will be quoted on a
     case-by-case basis at the sole discretion of the Seller.

1d.  Developmental Multiproject Masks "Pizza Mask" wafers will be quoted on a
     case-by-case basis at the sole discretion of the Seller.

1e.  Nonstandard/Special Handling Wafers are defined as those that do not fully
     comply with the standard foundry design rules (i.e. foundry design and
     layout rules) or outside of standard processing practices and will be
     quoted on a case-by-case basis at the sole discretion of the Seller.

1f.  MMICs to be offered include those subject to Paragraph 1a of this exhibit
     and which fall into one of the following categories:

          Products Velocium, TRW Inc. offers for sale as standard parts for
          commercial wireless telecom applications that are less than or equal
          to [*] GHz. Higher frequencies will be quoted on a case-by-case basis.

          Products which were developed and produced for the Nokia "Rats",
          "Mice" and Nortel Module Contracts.

          Endwave developed chips/wafers for production fabrication. Does not
          include nonstandard/special-handling wafers as specified in Section
          1e. above.

     Other products will be offered on a case-by-case basis.

2.   TRW Telecom Standard Products Chips. Various Standard Product Chips
     available from the Standard Products Catalog may be purchased in small
     quantities, i.e. quantities requiring fewer chips than one wafer lot
     yields.

3.   The SCAMP product is not covered under this Agreement. The current purchase
     order arrangement between TRW and TRW Milliwave will be maintained for the
     SCAMP product.

     [*] CERTAIN INFORMATION IN THIS EXHIBIT HAS BEEN OMITTED AND FILED
     SEPARATELY WITH THE COMMISSION. CONFIDENTIAL TREATMENT HAS BEEN REQUESTED
     WITH RESPECT TO THE OMITTED PORTIONS.

                                                                               4

<PAGE>

                             EXHIBIT 1B - REVISION 1

         PRICE, QUANTITY COMMITMENTS, DELIVERY SCHEDULE AND BUYER'S SITE
         ----------------------------------------------------------------

A.   PRICE:

     .    Wafer processing pricing per the Attachment B: Wafer Processing Price
          Matrix/Wafer Volume

     .    Wafer test pricing per Attachment C: Wafer Test Price Matrix ($/Wafer)

     .    Developmental Wafer prices per Attachment D: Developmental Lot Price
          Matrix

     .    Multi-project Masks "Pizza Masks" Wafer prices will be quoted on a
          case-by-case basis

     .    Special Handling Wafer prices will be quoted on a case-by-case basis

B.   QUARTERLY PURCHASE COMMITMENTS:

     On a quarterly basis, Buyer must purchase the minimum quantities specified
     in Attachment B - Revision 1, Wafer Processing Price Matrix/Wafer Volume.

C.   MAXIMUM SUPPLY COMMITMENT:

     On a quarterly basis, TRW will supply the Maximum wafer quantities
     specified in Attachment B - Revision 1, Wafer Processing Price Matrix/Wafer
     Volume.

D.   MINIMUM ORDER QUANTITY:

     Minimum order quantity of [*] wafers of each maskset (chip type) per
     purchase order. Minimum order quantities for special handling, pizza masks
     and developmental wafer will be quoted on a case-by-case basis.

E.   DELIVERY SCHEDULE:

     Delivery commitment is [*] weeks from receipt of order. [*] lots per year
     may be designated as "Hot Lots", which will be delivered in [*] weeks from
     receipt of order.

F.   NEW PRODUCT DESIGNS:

     Buyer will pay the direct costs for engineering services and the cost of
     layout design, fabricating engineering masks/"Pizza Masks", and testing per
     the Technical Services Agreement SN1D103 between the parties.

G.   LONG TERM WAFER HOLDS:

     At the written direction of the Buyer, Seller will hold in process wafers
     not to exceed [*] wafers of same part type at any given time per the
     intermediate process step identified below:

     .    Step #1 - Completion of EBL gate test
     .    Step #2 - Completion of all Front-Side Processing

     Seller will hold product at the intermediate process step specified above
     for up to [*] months. At that time, Buyer will either authorize processing
     to the next step or Buyer will pay cancellation

     [*] CERTAIN INFORMATION IN THIS EXHIBIT HAS BEEN OMITTED AND FILED
     SEPARATELY WITH THE COMMISSION. CONFIDENTIAL TREATMENT HAS BEEN REQUESTED
     WITH RESPECT TO THE OMITTED PORTIONS.

                                                                               5

<PAGE>

     charge equal to the list price of the Product, as specified in Exhibit 1B,
     multiplied by the percent to cancel the Order as follows:

     .    Stop at Step #1, [*]% of Exhibit 1B price
     .    Stop at Step #2, [*]% of Exhibit 1B price

H.   SITE:

     990 Almanor Avenue
     Sunnyvale, CA 94085

     Or

     6425-C Capitol Avenue
     Diamond Springs, CA 95619

     [*] CERTAIN INFORMATION IN THIS EXHIBIT HAS BEEN OMITTED AND FILED
     SEPARATELY WITH THE COMMISSION. CONFIDENTIAL TREATMENT HAS BEEN REQUESTED
     WITH RESPECT TO THE OMITTED PORTIONS.

                                       6

<PAGE>

Attachment B - Revision 1:  Wafer Processing Price Matrix/Wafer Volume

3 Inch Wafer Processing Pricing Table
-------------------------------------

<TABLE>
<CAPTION>
---------------------------------------------------------------------------------------------------------------
            Technology          CY02 Base Price per Wafer      CY03 Base Price per Wafer       Discount
---------------------------------------------------------------------------------------------------------------
<S>                             <C>                            <C>                            <C>
[*]                                        [*]                            [*]                     [*]
---------------------------------------------------------------------------------------------------------------
[*]                                        [*]                            [*]                     [*]
---------------------------------------------------------------------------------------------------------------
[*]                                        [*]                            [*]                     [*]
---------------------------------------------------------------------------------------------------------------
[*]                                        [*]                            [*]                     [*]
---------------------------------------------------------------------------------------------------------------
</TABLE>

3 Inch Wafer Processing Pricing Discount Table
----------------------------------------------

---------------------------------------------------------------
        Quarterly Quantity              Discount per Wafer
---------------------------------------------------------------
[*]                                            [*]
---------------------------------------------------------------
[*]                                            [*]
---------------------------------------------------------------
[*]                                            [*]
---------------------------------------------------------------
[*]                                            [*]
---------------------------------------------------------------

Quarterly Purchase Commitments: The minimum quarterly wafer quantity for CY2002
------------------------------
and CY2003 is [*] per quarter.

Maximum Supply Commitment: The maximum quarterly wafer quantity for CY2002 and
-------------------------
CY2003 is [*] wafers per quarter.

Hot Lot Pricing: A [*] "Hot Lot" premium charge will be added to the appropriate
---------------
base price from the table above.

Notes:
-----

The 3 Inch Wafer Processing Pricing Table determines the base
price/wafer/technology for calendar years CY2002 and CY2003. Wafer pricing and
quarterly volumes beyond CY2003 will be negotiated at a later date. A wafer
price discount is offered for committed deliveries within a given quarter. A
"Quarterly Quantity" is defined as the total number of wafers, technology
independent, which have committed deliveries falling within a given quarter.

     [*] CERTAIN INFORMATION IN THIS EXHIBIT HAS BEEN OMITTED AND FILED
     SEPARATELY WITH THE COMMISSION. CONFIDENTIAL TREATMENT HAS BEEN REQUESTED
     WITH RESPECT TO THE OMITTED PORTIONS.

                                                                               7

<PAGE>

Attachment C - Revision 1: Wafer Test Price Matrix ($/Wafer)

------------------------------------------------------------
    Test Metric             CY2002              CY2003
------------------------------------------------------------
        [*]                   [*]                [*]
------------------------------------------------------------
        [*]                   [*]                [*]
------------------------------------------------------------
        [*]                   [*]                [*]
------------------------------------------------------------
        [*]                   [*]                [*]
------------------------------------------------------------
        [*]                   [*]                [*]
------------------------------------------------------------
        [*]                   [*]                [*]
------------------------------------------------------------

The Test Metric is calculated as follows: Number of Sites per Wafer x Number of
Test Passes

This table is for production testing only. Design maskset and diagnostic testing
are covered under the Technical Services Agreement SN 1D103.

     [*] CERTAIN INFORMATION IN THIS EXHIBIT HAS BEEN OMITTED AND FILED
     SEPARATELY WITH THE COMMISSION. CONFIDENTIAL TREATMENT HAS BEEN REQUESTED
     WITH RESPECT TO THE OMITTED PORTIONS.

                                                                               8

<PAGE>

Attachment D:  Developmental Lot Price Matrix

<TABLE>
<CAPTION>
----------------------------------------------------------------------------------------------------------
              Technology                 CY02 Base Price per Lot           CY03 Base Price per Lot
----------------------------------------------------------------------------------------------------------
<S>                                      <C>                               <C>
[*]                                                [*]                               [*]
----------------------------------------------------------------------------------------------------------
[*]                                                [*]                               [*]
----------------------------------------------------------------------------------------------------------
[*]                                                [*]                               [*]
----------------------------------------------------------------------------------------------------------
[*]                                                [*]                               [*]
----------------------------------------------------------------------------------------------------------
[*]                                                [*]                               [*]
----------------------------------------------------------------------------------------------------------
</TABLE>

Deliverable: Minimum of [*] completely processed and tested wafers that pass PCM
specifications.

     [*] CERTAIN INFORMATION IN THIS EXHIBIT HAS BEEN OMITTED AND FILED
     SEPARATELY WITH THE COMMISSION. CONFIDENTIAL TREATMENT HAS BEEN REQUESTED
     WITH RESPECT TO THE OMITTED PORTIONS.

                                                                               9Prepared by R.R. Donnelley Financial -- Severance Agreement dated 01/21/2002

  
 Exhibit 10.27 
  
 ARIBA, INC. 
 807 11th Avenue 
 Sunnyvale, CA 94089 
  
 January
21, 2002 
  
 Eileen McPartland 
 807 11th Avenue 
 Sunnyvale, CA 94089 
  
 Dear Eileen: 
  
 For good and valuable consideration, Ariba, Inc. (the “Company”) is pleased to offer you the following severance arrangement: 

 
 1.    Severance Pay.    If the Company terminates your employment for any reason other than
Cause or Permanent Disability, then the Company will continue to pay your cash compensation for a period of 12 months following the termination of your employment (the “Continuation Period”). For this purpose, your “cash
compensation” will be deemed to be the sum of: 
  
 (a)    Your base salary at the rate
in effect at the time of the termination of your employment; plus 
  
 (b)    The lesser of
(i) the sum of your actual bonuses for the last four completed fiscal quarters preceding the termination of your employment or (ii) your target bonuses for those four completed fiscal quarters. 
  

Your cash compensation will be paid in accordance with the Company’s standard payroll procedures. 
  
 However, this Paragraph 1 will not apply unless you (a) sign a general release of claims (in a form prescribed by the Company) of all known and unknown claims that you may then have against the Company or persons
affiliated with the Company and (b) have returned all Company property. In addition, all payments under this Paragraph 1 will be discontinued immediately if you fail to comply with Paragraph 2, 3, 4 or 5 below. 
  
 “Cause” means (a) an unauthorized use or disclosure of the Company’s confidential information or trade secrets, which use or disclosure
causes material harm to the Company, (b) a material breach of any agreement between you and the Company, (c) a material failure to comply with the Company’s written policies or rules, (d) a conviction of, or plea of “guilty” or
“no contest” to, a felony under the laws of the United States or any State, (e) gross negligence or willful misconduct or (f) a continued failure to perform assigned duties after receiving written notification of the failure from the
Company’s Chief Executive Officer. The 

 Eileen McPartland 
 February 21, 2002 
 Page 2 
  
 foregoing is not
an exclusive list of all acts or omissions that the Company may consider as grounds for your termination without Cause. 
  
 “Permanent Disability” means that you are unable to perform the essential functions of your position, with or without reasonable accommodation, for a period of at least 120 consecutive days because of a physical or mental
impairment. 
  
 2.    Non-Solicitation.    While you render services to the Company
and during the Continuation Period (if any), you agree that you will not directly or indirectly, personally or through others, solicit or attempt to solicit the employment of any employee of the Company or any of the Company’s affiliates,
whether on your own behalf or on behalf of any other person or entity. The term “employment” for purposes of this Paragraph 2 means to enter into an arrangement for services as a full-time or part-time employee, independent contractor,
agent or otherwise. You and the Company agree that this provision is reasonably enforced as to any geographic area in which the Company conducts its business. 
  
 3.    Non-Competition.    While you render services to the Company and during the Continuation Period (if any), you agree that you will not: 
  
 (a)    Directly or indirectly, individually or in conjunction with others, engage in activities that compete with
the Company or work for any entity that is part of the Company’s Market; 
  
 (b)    Solicit, serve, contract with or otherwise engage any existing or prospective customer, client or account of the Company on behalf of any entity that is part of the Company’s Market; or 

 
 (c)    Cause or attempt to cause any existing or prospective customer, client or account of the Company
to divert from, terminate, limit or in any manner modify, or fail to enter into, any actual or potential business relationship with the Company. 
  
 You and the Company agree that this provision is reasonably enforced with reference to any geographic area in which the Company maintains any such relationship. For purposes of this Paragraph 3, the Company’s
“Market” means (i) all companies that derive their revenue primarily from e-procurement software sales or sales of software or services aiding companies in sourcing activities; and (ii) those companies set forth on Exhibit A hereto.
You and the Company agree that the Company’s Market is global in scope. 
  
 You and the Company further agree that if any
provision set forth in this paragraph is not enforceable under the laws of the state in which you are employed following the termination of your employment with the Company, nothing in this Agreement shall prohibit you from engaging in such lawful
conduct; provided however, that if you elect to do so your rights to any of the severance pay set forth in section 1 above shall be discontinued immediately. 

  
 Eileen McPartland 
 February 21, 2002 
 Page 3 
  
 4.    Cooperation and Non-Disparagement.    You agree that, during the Continuation Period, you will
cooperate with the Company in every reasonable respect and will use your best efforts to assist the Company with the transition of your duties to your successor. You further agree that, during the Continuation Period, you will not in any way or by
any means disparage the Company, the members of the Company’s Board of Directors or the Company’s officers and employees. 
  
 5.    Disclosure.    You agree that, during the Continuation Period, you will inform any new employer or other person or entity with whom you enter into a business relationship, before
accepting employment or entering into a business relationship, of the existence of Paragraphs 2, 3 and 4 above. 
  
 6.    Employment Relationship.    Notwithstanding the foregoing, employment with the Company is for no specific period of time. Your employment with the Company is “at will,” meaning
that either you or the Company may terminate your employment at any time and for any reason, with or without cause. Any contrary representations that may have been made to you are superseded by this offer. This is the full and complete agreement
between you and the Company on this term. Although your job duties, title, compensation and benefits, as well as the Company’s personnel policies and procedures, may change from time to time, the “at will” nature of your employment
may only be changed in an express written agreement signed by you and the Chief Executive Officer of the Company. 
  
 7.    Withholding Taxes.    All forms of compensation referred to in this letter agreement are subject to reduction to reflect applicable withholding and payroll taxes and other deductions
required by law. 
  
 8.    Entire Agreement.    This letter agreement supersedes and
replaces any prior agreements, representations or understandings, whether written, oral or implied, between you and the Company with respect to the subject matter hereof. 
  
 9.    Severability.    If any provision of this letter agreement becomes or is deemed invalid, illegal or unenforceable in any applicable
jurisdiction by reason of the scope, extent or duration of its coverage, then that provision will be deemed amended to the minimum extent necessary to conform to applicable law so as to be valid and enforceable or, if the provision cannot be so
amended without materially altering the intention of the parties, then the provision will be stricken and the remainder of this letter agreement will continue in full force and effect. If any provision of this letter agreement is rendered illegal by
any present or future statute, law, ordinance or regulation (collectively, the “Law”), then that provision will be curtailed or limited only to the minimum extent necessary to bring the provision into compliance with the Law. All the other
terms and provisions of this letter agreement will continue in full force and effect without impairment or limitation. 
  
 10.    Arbitration.    You and the Company agree to waive any rights to a trial before a judge or jury and agree to arbitrate before a neutral arbitrator any and all claims or disputes arising
out of 

  
 Eileen McPartland 
 February 21, 2002 
 Page 4 
  
 this letter agreement and any and all claims arising from or relating to your employment with the Company, including (but not limited to) claims against any current or former
employee, director or agent of the Company, claims of wrongful termination, retaliation, discrimination, harassment, breach of contract, breach of the covenant of good faith and fair dealing, defamation, invasion of privacy, fraud,
misrepresentation, constructive discharge or failure to provide a leave of absence, or claims regarding commissions, stock options or bonuses, infliction of emotional distress or unfair business practices. 
  
 The arbitrator’s decision must be written and must include the findings of fact and law that support the decision. The arbitrator’s decision
will be final and binding on both parties, except to the extent applicable law allows for judicial review of arbitration awards. The arbitrator may award any remedies that would otherwise be available to the parties if they were to bring the dispute
in court. The arbitration will be conducted in accordance with the National Rules for the Resolution of Employment Disputes of the American Arbitration Association; provided, however that the arbitrator must allow the discovery authorized by the
California Arbitration Act or the discovery that the arbitrator deems necessary for the parties to vindicate their respective claims or defenses. The arbitration will take place in Santa Clara County or, at your option, the county in which you
primarily worked with the Company at the time when the arbitrable dispute or claim first arose. 
  
 You and the Company will share
the costs of arbitration equally, except that the Company will bear the cost of the arbitrator’s fee and any other type of expense or cost that you would not be required to bear if you were to bring the dispute or claim in court. Both the
Company and you will be responsible for their own attorneys’ fees, and the arbitrator may not award attorneys’ fees unless a statute or contract at issue specifically authorizes such an award. 
  
 This arbitration provision does not apply to (a) workers’ compensation or unemployment insurance claims or (b) claims concerning the validity,
infringement or enforceability of any trade secret, patent right, copyright or any other trade secret or intellectual property held or sought by either you or the Company (whether or not arising under the Proprietary Information and Inventions
Agreement between you and the Company). 
  
 If an arbitrator or court of competent jurisdiction (the “Neutral”)
determines that any provision of this arbitration provision is illegal or unenforceable, then the Neutral shall modify or replace the language of this arbitration provision with a valid and enforceable provision, but only to the minimum extent
necessary to render this arbitration provision legal and enforceable. 
  
 * * * * * 
 You may indicate your agreement with these terms and accept this offer by signing and dating both the enclosed duplicate original of this letter agreement and returning them to me. This offer, if not accepted, will
expire at the close of business on                          , 200    . 

  
 Eileen McPartland 
 February 21, 2002 
 Page 5 

	 	Ve
	ry truly yours, 
 

  

	 	AR
	IBA, INC. 
 

  

	 	By
	:    /s/ Robert M. Calderoni 
 

	 	Tit
	le:     
 

  
 I have read and accept this employment offer: 
  
 
	 
	 /s/    Eileen McPartland        
 

	 Signature of Eileen McPartland
 

 
 
	 
	 Dated:
 	 	 1/21/02
 

	  	 	  

 

  
 Eileen McPartland 
 February 21, 2002 
 Page 6 
  
 Exhibit A 
  
 [*]

  
  
  
  

	*
	 
	Represents confidential information for which Ariba, Inc. is seeking confidential treatment with the Securities and Exchange Commission. 
 

 6

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