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Asset Purchase Agreement - Auspex Systems Inc. and Network Appliance Inc.

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                            ASSET PURCHASE AGREEMENT

      This Asset Purchase Agreement (hereinafter "Agreement"), is entered into
as of June 20, 2003 (the "Effective Date"), by and between Auspex Systems, Inc.,
a Chapter 11 debtor in possession, United States Bankruptcy Court for the
Northern District of California (the "Bankruptcy Court"), Case No. 03-52596-mml
1 (hereinafter "Seller"), and Network Appliance, Inc., a Delaware corporation
(hereinafter "Purchaser").

      Whereas Seller is the owner of full right and title (both legal and
equitable) to certain inventions, patents, and applications, defined herein as
"Seller Patents"; and

      Whereas Purchaser is desirous of acquiring the entire domestic and foreign
right title and interest in and to such Seller Patents.

      Now, therefore, Seller and Purchaser hereby covenant and agree as follows:

1.    DEFINITIONS

      1.1.  "Seller Patents" shall mean those patents and applications
            identified as such in Exhibit A and (i) all U.S. and foreign patents
            and patent applications that claim priority to such identified
            patents and applications and all U.S. and foreign patents and
            applications to which such identified patents and applications
            relate or claim priority, (ii) any continuations,
            continuations-in-part, divisions, reissue applications, extensions,
            Patent Cooperation Treaty applications, or derivatives of any of the
            foregoing, both foreign and domestic, and (iii) all patentable
            inventions, in the U.S. and every foreign country, described or
            embodied in any of the foregoing.

      1.2.  "Prosecution History Files" shall mean all files, documents and
            tangible things, as those terms have been interpreted pursuant to
            Federal Rule of Civil Procedure 34, constituting, comprising or
            relating to investigation, evaluation, prosecution, filing and
            registration of the Seller Patents, and specifically includes e-mail
            messages and other electronic or computer stored or generated data.

2.    TRANSFER OF RIGHTS

      2.1.  For good and valuable consideration, the receipt and sufficiency of
            which are hereby acknowledged, Seller hereby agrees to assign and
            transfer to Purchaser and its representatives, successors and
            assigns its full and exclusive right, title and interest in and to
            all Seller Patents. Seller also hereby agrees to assign and transfer
            to Purchaser and its representatives, successors and assigns their
            full and exclusive right, title and interest in and to all
            protectable (e.g., as by patenting) inventions, in the U.S. and
            every foreign country, described or embodied in the Seller Patents.

      2.2.  Seller hereby agrees to assign and transfer to Purchaser and its
            representatives, successors and assigns the full and exclusive right
            to sue upon and otherwise enforce the Seller Patents and to recover
            all past damages and other potential relief arising from
            infringement of the Seller Patents assigned by this Agreement.

      2.3.  The closing (the "Closing") of the assignment and transfer of the
            Seller Patents and other rights and assets described in Section 2.1
            and 2.2 (the "Purchased Assets") shall take


                                       1.
<PAGE>
            place on the second business day following the satisfaction of the
            conditions set forth in Sections 2.4 through 2.7 and Section 5.19 of
            this Agreement or at such other place and time as Seller and
            Purchaser may mutually agree.

      2.4.  For the purpose of recordation and in accordance with the transfers
            herein, at the Closing, Seller shall execute the assignment document
            attached as Exhibit B listing the Seller Patents. Upon the written
            request of the Buyer and without additional charge or at the Buyer's
            expense, the Seller shall execute and deliver to the Buyer all such
            additional instruments of transfer, conveyance, endorsement and
            assignment (in a form satisfactory to the Buyer) as shall be
            necessary to transfer (or perfect or record the transfer of) the
            Seller Patents to Buyer including separate assignments for each
            Seller Patent.

      2.5.  Effective upon the Closing, Seller authorizes and requests the
            Commissioner of Patents to issue U.S. patents to Purchaser, its
            representatives, successors and assigns relating to the inventions
            and applications conveyed by this Agreement.

      2.6.  Effective upon the Closing, Seller conveys to Purchaser, its
            representatives, successors and assigns, the right to make
            applications on their own behalf for protection of the inventions
            conveyed herein in the U.S. and foreign countries and to claim,
            under United States law, the Patent Cooperation Treaty, the
            International Convention and/or other international arrangements for
            any such application, priority to any earlier application or patent.

      2.7.  Within 30 days of the Closing, Seller shall i) provide a complete
            and accurate docket identifying the relevant dates when any action
            or response is due within the next six (6) months in any US and
            foreign patent offices with respect to the Seller Patents, and ii)
            transfer, at Purchaser's expense, all Prosecution History Files and
            related files maintained by Seller outside counsel and in-house
            counsel for the Seller Patents to Purchaser.

3.    NO IMPLIED OR EXPRESS LICENSES

      3.1.  Except for the Limited Use License (as defined below) set forth as
            Exhibit C hereto, Purchaser does not grant to Seller or any other
            entity any implied or express licenses or rights whatsoever under
            this Agreement. Purchaser does not grant to Seller or any other
            entity any implied or express licenses or rights with respect to any
            patents other than the Seller Patents. No licenses or rights are
            granted to Seller or any other entity regarding subject matter not
            invented by employees, contractors or other agents of Seller.

4.    PAYMENT

      4.1.  As consideration for the assignment of the Seller Patents and other
            rights granted by Seller herein, Purchaser shall pay to Seller on or
            prior to the Closing, the total sum of eight million nine hundred
            seventy-five thousand U.S. Dollars ($8,975,000) (hereinafter
            referred to as the "Purchase Price"). The assignment and license
            provisions set forth herein are contingent upon the payment of the
            Purchase Price to Seller on or prior to Closing.


                                       2.
<PAGE>
      4.2.  Payment under Paragraph 4.1 shall be made by electronic funds
            transfer. Such payment shall be deemed to be made on the date
            credited to the following account:

                 Pay to:                  City National Bank
                                          150 California Street
                                          San Francisco, CA 94111
                 Routing & Transit #:     1220-1606-6
                 For Credit Of:           Cooley Godward LLP FBO Auspex Systems,
                                          Inc.
                 Credit Account #:        432-654869

            (Clearly indicate the originator (Purchaser's Name) and the
            beneficiary (Auspex Systems, Inc.)

5.    COVENANTS AND OTHER PROVISIONS

      5.1.  Seller represents and warrants that (a) it has the right to assign
            the Purchased Assets, and (b) it is conveying through this Agreement
            its undivided right, title and interest in and to the Purchased
            Assets and that, to its knowledge, no other party has any claim of
            ownership to the Purchased Assets, except as explicitly provided for
            herein.

      5.2.  Seller represents and warrants that no agreements with third parties
            under any of the Seller Patents prevent Seller from entering into
            this Agreement. Seller further represents and warrants that no
            entities have licenses or rights under 11 U.S.C. Section 365(n) with
            respect to the Seller Patents.

      5.3.  Seller represents and warrants that, to its knowledge it has not
            taken, and will not take, any action materially adversely affecting
            the validity, enforceability, or issuance of the Seller Patents.

      5.4.  Seller represents and warrants that, to its knowledge, all of the
            domestic patent applications listed in Exhibit A are pending in the
            United States Patent and Trademark Office and that none of such
            applications have been abandoned.


      5.5.  Seller represents and warrants that except as set forth on Schedule
            5.5, no procedures are necessary and no payment of filing,
            examination or maintenance fees are required to be paid on or prior
            to July 30, 2003 with respect to any issued patents or pending
            patent applications included in the Seller Patents to maintain their
            compliance with formal legal requirements for filing, issuance and
            maintenance.

      5.6.  Seller represents and warrants that none of the Seller Patents set
            forth on Exhibit A is involved in any interference or opposition
            proceeding, and to Seller's, knowledge, no such proceeding is being
            threatened with respect to any such Seller Patents.

      5.7.  Seller represents and warrants that subject to appropriate order of
            the Bankruptcy Court, it is able to convey the Seller Patents free
            and clear of any liens, encumbrances, security interests, or other
            claims to the fullest extent of the Bankruptcy Court's authority to
            so order, except for the Limited Use License noted in this
            Agreement.


                                       3.
<PAGE>
      5.8.  Seller shall pay all transfer taxes imposed on the sale of the
            Purchased Assets, including all sales, gross receipts, excise and
            gross income taxes.

      5.9.  Subject to the authority and jurisdiction of the Bankruptcy Court
            and except as is consistent with the applicable orders of the
            Bankruptcy Court with respect to the procedures relating to the sale
            of its assets, Seller covenants and agrees that it shall not execute
            any writing or do any act whatsoever conflicting with the terms of
            this Agreement, and that, following the Closing, Seller will at any
            time upon request, without further or additional consideration, but
            at the expense of Purchaser, execute such additional assignments or
            other writings and perform such additional acts as Purchaser may
            deem reasonably necessary to perfect Purchaser's ownership of the
            Purchased Assets. Seller further covenants and agrees, at
            Purchaser's expense, to render all reasonably necessary assistance
            following the Closing in making application for, prosecuting in any
            patent office internationally, and obtaining original, continuation,
            continuation-in-part, divisional, reissued, reexamined, and National
            phase patents of the U.S. or of any and all foreign countries on the
            inventions assigned herein, and in enforcing any rights or choses in
            action accruing as a result of the rights assigned herein, and by
            executing statements and other affidavits, it being understood that
            the foregoing covenant and agreement shall bind, and inure to the
            benefit of, the assigns and representatives of all parties hereto.

      5.10. At the Closing, Purchaser agrees to execute and deliver to such
            party as may be designated by Seller, a limited use license in the
            form set forth as Exhibit C (the "Limited Use License").

      5.11. This Agreement and all matters relating to this Agreement shall be
            construed and controlled by the laws of the State of California. If
            any legal proceeding or other legal action relating to this
            Agreement is brought or otherwise initiated by the parties to this
            Agreement, the venue therefore will be the Bankruptcy court.
            Purchaser and Seller hereby expressly and irrevocably consent and
            submit to the jurisdiction of the Bankruptcy Court.

      5.12. Except as otherwise provided in the Agreement, the parties shall pay
            their respective expenses incurred in connection with the
            preparation, execution, and delivery of this Agreement and the
            consummation of the transactions contemplated hereby.

      5.13. All notices, requests, demands, and other communications hereunder
            shall be deemed to have been duly given on the day they are (i)
            deposited in the U.S. mail, postage prepaid, certified or
            registered, return receipt requested; or (ii) sent by air express
            courier, charges prepaid, and addressed as follows:

            5.13.1.     If to Purchaser: Network Appliance, Inc., 495 East Java
                        Drive, Sunnyvale, CA 94089 Attention: Gary Ross, Esq.

            5.13.2.     If to Seller: Auspex Systems, Inc., c/o J. Michael
                        Kelly, Cooley Godward LLP One Maritime Plaza, 20th
                        Floor, San Francisco, CA 94111.


                                       4.
<PAGE>
            5.13.3.     A copy to Daren Brinkman, Esq., 4333 Park Terrace St.,
                        Suite 205, Westlake Village, CA 91361.

            5.13.4.     Such addresses may be changed, from time to time, by
                        means of a written notice delivered by the party seeking
                        to change such address in the manner provided for in
                        this paragraph.

      5.14. This Agreement shall be binding upon and inure to the benefit of the
            parties and their respective successors and assigns.

      5.15. This Agreement may be terminated only by mutual consent of the
            parties or by either party prior to the Closing upon approval by the
            Bankruptcy Court of a transaction or series of transactions
            involving a sale, transfer or assignment of all or substantially all
            the Purchased Assets to a party other than Purchaser. In the event
            that this Agreement shall be terminated pursuant to this Section
            5.15, all further obligations of the parties under this Agreement
            shall terminate without further liability or obligation of any party
            hereunder; provided, that the parties will remain bound by the
            provisions of that certain confidentiality agreement dated May 8,
            2003 by and between the parties.

      5.16. The invalidity or unenforceability of any term or provision of this
            Agreement or the application of such term or provision to any person
            or circumstance shall not impair or affect the remainder of this
            Agreement or its application to other persons and circumstances, and
            the remaining terms and provisions shall remain in full force and
            effect.

      5.17. This Agreement constitutes the entire agreement between the parties
            and supersedes all prior agreements and understandings, oral and
            written, among the undersigned with respect to the subject matter
            hereof.

      5.18. None of Seller's representations, warranties and pre-closing
            covenants contained in this Agreement or in any other agreement,
            document or certificate delivered pursuant to this Agreement shall
            survive the Closing. Notwithstanding any provision hereof to the
            contrary, Seller's undertakings set forth in the second sentence of
            Section 2.4, Section 2.7 (ii), Section 5.8 and Section 5.9 shall
            continue in full force and effect following the Closing. Neither
            Seller nor any of its officers, directors, representatives,
            employees, advisors or agents shall have any liability to Purchaser
            or any other party after the Closing for any breach thereof.

      5.19. The Closing and the transactions contemplated herein are and shall
            be contingent upon (i) the issuance by the Bankruptcy Court of an
            order, in a form reasonably satisfactory to Purchaser, approving the
            transactions provided for herein free and clear of liens and
            encumbrances to the fullest extent of the Bankruptcy Court's
            authority to so order (the "Sale Order"); (ii) execution and
            delivery of the documents and other instruments required to be
            delivered by Purchaser and Seller on or prior to Closing pursuant to
            this Agreement; and (iii) receipt by Seller of the Purchase Price.
            The Sale Order shall contain, among other things, a finding that the
            sale of the Purchased Assets to Purchaser is in good faith within
            the meaning of Bankruptcy Code Section 363(m).


                                       5.
<PAGE>
      In witness whereof, the parties hereto have caused this agreement to be
Trade and executed by duly authorized officers as of the dates indicated below.


Agreed to:                                Agreed to:
AUSPEX SYSTEMS, INC.                      NETWORK APPLIANCE, INC.

By: /s/ Peter R. Simpson                  By:
   ---------------------                     ---------------------
Name: Peter R. Simpson                    Name:
     -------------------                       -------------------
Title: CFO                                Title:
      ------------------                        ------------------
Date: 6/19/2003                           Date:
     -------------------                       -------------------


                                       6.
<PAGE>
      In witness whereof, the parties hereto have caused this agreement to be
made and executed by duly authorized officers as of the dates indicated below.

Agreed to:                                Agreed to:
AUSPEX SYSTEMS, INC.                      NETWORK APPLIANCE, INC.

By:                                       By: /s/ Steven Gomo
   ---------------------                     ---------------------
Name:                                     Name: Steven Gomo
     -------------------                       -------------------
Title:                                    Title: Sr. VP and CFO
      ------------------                        ------------------
Date:                                     Date: 6/19/2003
     -------------------                       -------------------


                                       6.
<PAGE>
                      EXHIBIT A TO ASSET PURCHASE AGREEMENT

All U.S. and foreign patents and patent applications currently assigned to
Seller, under an obligation to assign to Seller, or in which Seller has an
ownership interest, including specifically the following identified patents and
patent applications:

SELECT SELLER U.S. AND FOREIGN PATENTS:



        TITLE                                        PATENT NUMBER              STATUS             COUNTRY/REGION
        -----                                        -------------              ------             --------------
                                                                                          
Bridge for Direct Data
Storage Device Access                                  5,941,969                Issued                    US

Bridge for Direct Data
Storage Device Access                                  6,253,271                Issued                    US

Processing System with
Dynamically Allocatable
Buffer Memory                                          6,081,883                Issued                    US

Characterization of Data
Access Using File System                               6,442,682                Issued                    US

Intelligent Virtual Volume
Access                                                 6,389,432                Issued                    US

Method an Apparatus for
Using Intercepted Operator
Messages to Control
Robotics                                               5,465,329                Issued                    US

System and Method for
Reading and Writing Disks
Formatted for an Operating
System Foreign to Host
Computer                                               5,537,592                Issued                    US

Parallel I/O Network File
Server Architecture                                    5,163,131                Issued                    US

Parallel I/O Network File
Server Architecture                                       647414                Issued             Australia

Parallel I/O Network File
Server Architecture                                       670376                Issued             Australia

Parallel I/O Network File
Server Architecture                                      0490973                Issued              European

Parallel I/O Network File
Server Architecture                                      0490973                Issued                    UK

Parallel I/O Network File
Server Architecture                                      1011772                Issued             Hong Kong



                                       7.
<PAGE>

                                                                                        
Parallel I/O Network File
Server Architecture                                       201574                Issued           South Korea

Parallel I/O Network File
Server Architecture                                        95447                Issued                Israel

Parallel I/O Network File
Server Architecture                                       116288                Issued                Israel

Parallel I/O Network File
Server Architecture                                       107646                Issued                Israel

Parallel I/O Network File
Server Architecture                                       107645                Issued                Israel

Parallel I/O Network File
Server Architecture                                       107644                Issued                Israel

Parallel I/O Network File
Server Architecture                                    5,355,435                Issued                    US

Parallel I/O Network File
Server Architecture                                    5,802,366                Issued                    US

Parallel I/O Network File
Server Architecture                                    5,931,918                Issued                    US

Multiple Facility Operating
System Architecture                                    5,485,579                Issued                    US

Multiple Facility Operating
System Architecture                                    6,065,037                Issued                    US

Multiple Facility Operating
System Architecture                                       201772                Issued           South Korea

Multiple Facility Operating
System Architecture                                      2945757                Issued                 Japan

Multiple Facility Operating
System Architecture                                        95449                Issued                Israel

Multiple Facility Operating
System Architecture                                      1014064                Issued             Hong Kong

Multiple Facility Operating
System Architecture                                      0490980                Issued              European

Multiple Facility Operating
System Architecture                                    2,066,566                Issued                Canada

Multiple Facility Operating
System Architecture                                       651321                Issued             Australia

Multiple Facility Operating
System Architecture                                      0490980                Issued                    UK



                                       8.
<PAGE>

                                                                                             
Fault Tolerant NFS Server
System and Mirroring
Protocol                                               5,513,314                Issued                    US

High Performance Non-
Volatile RAM Protected
Write Cache Accelerator
System Employing DMA
and Data Transferring
Scheme (as amended)                                    5,701,516                Issued                    US

High-Speed, Flexible
Source/Destination Data
Burst Direct Memory Access
Controller                                             5,175,825                Issued                    US

High-Speed, Flexible
Source/Destination Data
Burst Direct Memory Access
Controller                                                 95445                Issued                Israel

Bus Locking FIFIO Multi-
Processing Communication
System                                                     95448                Issued                Israel

Image File Storage and
Retrieval System                                       5,761,655                Issued                    US

Enhanced VMEbus protocol
utilizing pseudosynchronous
handshaking and block
mode data transfer                                     5,388,231                Issued                    US

Method for transmitting
commands excluded from a                                                    Issued and
predefined command set                                 5,379,389      Lapsed/Abandoned                    US

System and method for
performing a multi-file                                                     Issued and
transfer operation                                     5,053,945      Lapsed/Abandoned                    US


SELECT SELLER U.S. AND FOREIGN APPLICATIONS:


                                                                                             

Loosely Coupled-Multi Processor
Server                                                  87120169               Pending                Taiwan

Coherent Device to Device Data
Replication                                           09/375,819               Pending                    US

Intelligent Virtual Machines                          10/068,352               Pending                    US

Microkernel for Real Time
Applications                                          09/408,149               Pending                    US



                                       9.
<PAGE>

                                                                                          
Parallel I/O Network File Server
Architecture                                             2066443               Allowed                Canada

Multiple Facility Operating System
Architecture                                           2,358,807               Pending                Canada

Fault Tolerant NFS Server
System and Mirroring Protocol                           8-523008             Published                 Japan

Fault Tolerant NFS Server
System and Mirroring Protocol                         98103865.9             Published             Hong Kong

Fault Tolerant NFS Server
System and Mirroring Protocol                         96903668.0             Published              European

Fault Tolerant NFS Server
System and Mirroring Protocol                          2,211,654               Pending                Canada

High Availability Cluster Virtual
Server System                                         09/911,902             Published                    US

High Availability Cluster Virtual
Server System                                      WO US02/23417             Published                  WIPO

Active File Change Notification                    WO US03/00704               Pending                  WIPO

Active File Change Notification                       10/341,811               Pending                    US

Internet Cache                                        09/324,801               Pending                    US



                                       10.
<PAGE>
                      EXHIBIT B TO ASSET PURCHASE AGREEMENT

                                   ASSIGNMENT

      WHEREAS, AUSPEX SYSTEMS, INC., a Delaware corporation, (hereinafter
referred to as "Assignor") owns all right, title and interest in and to certain
patents and patent applications identified in Exhibit A attached hereto; and

      WHEREAS, NETWORK APPLIANCE, INC., a Delaware corporation, (hereinafter
referred to as "Assignee"), is desirous of acquiring the entire domestic and
foreign right, title, and interest in and under the Intellectual Property (as
defined below).

      NOW, THEREFORE, for good and valuable consideration, the receipt and
sufficiency of which are hereby acknowledged, Assignor assigns and transfers to
the Assignee and the Assignee's legal representatives, successors and assigns,
pursuant to the terms of a concurrently executed Asset Purchase Agreement, its
full and exclusive right, title and interest to those patents and applications
identified as such in Exhibit A hereto, and (i) all U.S. and foreign patents and
patent applications that claim priority to such identified patents and
applications and all U.S. and foreign patents and applications to which such
identified patents and applications relate or claim priority, (ii) any
provisionals, continuations, continuations-in-part, divisions, reissue
applications, extensions, Patent Cooperation Treaty applications, or derivatives
of any of the foregoing, both foreign and domestic, and (iii) all patentable
inventions, in the U.S. and every foreign country, described or embodied in any
of the foregoing, (the "Intellectual Property") and does hereby authorize and
request the Commissioner of Patents to issue U.S. patents to the above-mentioned
Assignee in accordance with the terms of this assignment document. Such full and
exclusive rights shall include, without limitation, the right to sue upon and
otherwise enforce the Intellectual Property and to recover all past damages and
other potential relief arising from infringement of the Intellectual Property
assigned by this Agreement.

      ASSIGNOR HEREBY AUTHORIZES the Assignee to insert in Exhibit A to this
assignment document the filing date and application number of any application if
the date and number are unavailable at the time this document is executed.

      UPON SAID CONSIDERATION, Assignor conveys to the Assignee the right to
make application in its own behalf for protection of the Intellectual Property
in the U.S. and countries foreign to the U.S. and to claim under the Patent
Cooperation Treaty, the International Convention and/or other international
arrangement for any such application the date of any earlier U.S. application
(or any other application on the invention) to gain priority with respect to
other applications.


                                      11.
<PAGE>
      IN WITNESS WHEREOF, Assignor has caused one of its officers to hereunder
set his hand on the date shown below and Assignee has caused one of its officers
to hereunder set his hand on the date shown below to signify its acceptance of
this Assignment.


AUSPEX SYSTEMS, INC.

By:
   -------------------------------------
Name:
     -----------------------------------
Title:
      ----------------------------------
Date:                             , 2003
     -----------------------------


STATE OF                                )
        --------------------------------
                                        )SS:
COUNTY OF                               )
         -------------------------------

      On this          day of                           before me, a Notary
              --------        -------------, ---------,
Public in and for said county, appeared           , who is personally known to
me to be the same person whose name is subscribed to the foregoing assignment
document, and acknowledged that he/she signed and delivered the document as
his/her free and voluntary act for the uses and purposes therein set forth.



                                  ----------------------------------------------
                                  Notary Public

{SEAL}
     My Commission Expires:
                           -------------------------


                                       12.
<PAGE>
ACCEPTANCE BY ASSIGNEE:

NETWORK APPLIANCE, INC.

By:
   -------------------------------------
Name:
     -----------------------------------
Title:
      ----------------------------------
Date:
     -----------------------------------


STATE OF                                )
        --------------------------------
                                        )SS:
COUNTY OF                               )
         -------------------------------

      On this          day of                           before me, a Notary
              --------        -------------, ---------,
Public in and for said county, appeared           , who is personally known to
me to be the same person whose name is subscribed to the foregoing assignment
document, and acknowledged that he/she signed and delivered the document as
his/her free and voluntary act for the uses and purposes therein set forth.



                                  ----------------------------------------------
                                  Notary Public

{SEAL}
     My Commission Expires:
                           -------------------------


                                      13.
<PAGE>
                                    EXHIBIT C
                               LIMITED USE LICENSE

                        FORM OF PATENT LICENSE AGREEMENT

      THIS PATENT LICENSE AGREEMENT ("Agreement") is entered into, subject to
Bankruptcy Court approval, as of June , 2003 ("Effective Date") between the
licensor named below ("Licensor") and the licensee named below ("Licensee").
Licensor and Licensee may be referred to herein individually as a "party" and
collectively as the "parties."

                                    RECITALS

      A. Auspex Systems, Inc. ("Auspex") is debtor in possession in a chapter 11
bankruptcy case pending in the Bankruptcy Court for the Northern District of
California administered under Case No. 03-52596-MM11.

      B. Auspex has, prior the Effective Date, been a provider of network
storage products. Its products include hardware devices that operate in
conjunction with software provided by Auspex or its licensors. Auspex has, prior
to the Effective Date, provided a maintenance and repair service to users of its
products (as defined below, the "Maintenance Service").

      C. Auspex has sold to Licensor certain of Auspex's patents (as defined
below, "Licensed Patents").

      D. Auspex has sold to Licensee certain other assets relating to its
Maintenance Service. The provision of such Maintenance Service by Licensee may,
in some cases, infringe one or more of the Licensed Patents.

      E. Licensee desires to receive, and Licensor desires to grant, a
perpetual, royalty-free license under the Licensed Patents to permit Licensee to
provide Maintenance Services.

                                    AGREEMENT

      Now, therefore, in consideration of the mutual covenants and agreements
contained herein and for other good and valuable consideration, the receipt and
sufficiency of which are hereby acknowledged, the parties to this Agreement,
intending to be legally bound, hereby agree as follows:

1.    DEFINITIONS.

      Capitalized terms used in this Agreement are defined in this Section 1 or
in the Section where they are first used.

      1.1   "MAINTENANCE SERVICE" means the service of repairing, maintaining or
            refurbishing Existing Installed Products, including the provision of
            spare parts for same and the correction of Errors in the software
            that accompanies or is embedded in Existing Installed Products.

      1.2   "ERRORS" means an error or other nonconformity in software that
            causes the software, or the hardware product which the software
            operates, to malfunction or otherwise


                                      14.
<PAGE>
            deviate from its published performance specifications or to be
            incompatible with the network, operating system or other environment
            in which it is deployed.

      1.3      "EXISTING INSTALLED PRODUCTS" means network storage products,
            including accompanying or embedded software, manufactured or
            distributed by Auspex before the Effective Date.

      1.4      "LICENSED PATENTS" means those patents and applications
            identified as such in Schedule 1 hereto, including (i) all U.S. and
            foreign patents and patent applications that claim priority to such
            identified patents and applications and all U.S. and foreign patents
            and applications to which such identified patents and applications
            relate or claim priority, and (ii) any provisionals, continuations,
            continuations-in-part, divisions, reissue applications, extensions,
            Patent Cooperation Treaty applications, or derivatives of any of the
            foregoing, both foreign and domestic.

2.    RIGHTS GRANTED.

      2.1      GRANT. Subject to the terms and conditions of this Agreement,
            Licensor hereby grants to Licensee a non-exclusive, royalty-free,
            limited license under the Licensed Patents to: (a) make, have made,
            use, sell, offer for sale, import, compile, modify, reproduce and
            distribute software accompanying or embedded in Existing Installed
            Products for the sole purpose of correcting Errors in such software,
            and (b) otherwise provide Maintenance Services with respect to
            Existing Installed Products.

      2.2      RESTRICTIONS. The license granted hereunder is made only to the
            extent of Licensor's rights in the Licensed Patents. To the extent
            that any Licensed Patents are subject to rights of third parties,
            Licensee must separately procure a license from such third parties.

      2.3      LICENSOR'S RIGHTS. Licensee acknowledges that, subject to the
            license grant in Section 2.1, Licensor retains all right, title and
            interest in and to the Licensed Patents. There are no implied
            licenses under this Agreement, and any rights not expressly granted
            to Licensee hereunder are reserved by Licensor, including the right
            to grant third parties non exclusive licenses under the Licensed
            Patents.

      2.4      SUBLICENSING. Licensee may sublicense the rights granted to it
            under this Section 2, subject to the teens and conditions of this
            Agreement.

3.    OTHER MATTERS.

      3.1      DISCLOSURE. Licensor has no obligation hereunder to make any
            disclosures to Licensee of technical information.

      3.2      Services. Licensor has no obligation hereunder to provide
            technical support, maintenance, training or any other services of
            any kind to Licensee.

      3.3      IMPROVEMENTS. As between the parties, Licensee will own any
            derivative works or improvements that it makes in respect to the
            subject matter of the Licensed Patents ("Improvements") but such
            Improvements will remain subject at all times to the Licensed
            Patents so that, apart from the rights granted under Section 2.1,
            Licensee will have no right to make, use, sell or import
            Improvements that embody underlying subject matter protected


                                      15.
<PAGE>
      by the Licensed Patents. Licensee will not be required to disclose
      Improvements to Licensor.

4.    CONFIDENTIALITY OF AGREEMENT.

      This Agreement will be confidential. Neither party shall disclose any
terms of this Agreement to anyone other than its attorneys, accountants, and
other professional advisors under a duty of confidentiality except: (a) to the
minimum extent required by law or regulation including any filing required under
the Securities Act of 1933, as amended, or the Securities Exchange Act of 1934,
as amended, or the regulations promulgated thereunder or under the rules of any
selfregulatory body to which such party is subject; (b) pursuant to a mutually
agreeable press release; or (c) to prospective investors, lenders or purchasers
in connection with a proposed merger, financing, or sale of such party's
business; provided that any third party to whom the terms of this Agreement are
to be disclosed agrees in writing to keep such terms confidential.

5.    WARRANTY DISCLAIMER.

      THE LICENSED PATENTS ARE PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND,
EITHER EXPRESS OR IMPLIED. LICENSOR EXPRESSLY DISCLAIMS ANY AND ALL WARRANTIES,
EITHER EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION THE IMPLIED WARRANTIES
OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, TITLE, NON-INFRINGEMENT OR
QUIET ENJOYMENT.

6.    LIMITATION OF LIABILITY.

      TO THE EXTENT PERMITTED BY APPLICABLE LAW, IN NO EVENT SHALL LICENSOR BE
LIABLE FOR ANY CONSEQUENTIAL, INCIDENTAL, SPECIAL OR INDIRECT DAMAGES OF ANY
KIND, INCLUDING, BUT NOT LIMITED TO, THIRD PARTY INFRINGEMENT CLAIMS OR LOST
PROFITS, ARISING FROM OR RELATING TO THE LICENSED PATENTS, OR OTHERWISE RELATING
TO THIS AGREEMENT, EVEN IF LICENSOR HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
DAMAGES. LICENSEE USES LICENSED PATENTS ENTIRELY AT LICENSEE'S OWN RISK.

7.    TERM AND TERMINATION.

      7.1      TERM. The term of this Agreement shall begin as of the Effective
            Date and shall remain in effect until the expiration of the
            last-to-expire of the Licensed Patents.

      7.2      TERMINATION FOR CONVENIENCE. Licensee may terminate this
            Agreement for any reason or no reason by giving the Licensor thirty
            (30) days prior written notice.

      7.3      TERMINATION FOR DEFAULT. If either party materially breaches its
            obligations hereunder, the non-breaching party may terminate this
            Agreement in accordance with the following procedure. The
            non-breaching party must provide the breaching party with a notice
            of default ("Notice of Default"), specifying in reasonable detail
            the nature of the alleged material breach. The breaching party shall
            have a thirty (30) day grace period after its receipt of the Notice
            of Default ("Grace Period") to correct or cure any material breach
            specified therein. If the breach identified in the Notice of Default
            is corrected within the Grace Period, then this Agreement shall
            remain in effect; otherwise, this Agreement shall terminate upon the
            conclusion of the Grace Period.


                                      16.
<PAGE>
      7.4      EFFECTS OF TERMINATION. Upon the termination or expiration of
            this Agreement the following terms shall apply:

            (a) all licenses granted under this Agreement shall immediately
terminate; and

            (b) Sections 1 (Definitions), 2.2 (Restrictions), 2.3 (Licensor's
Rights), 3.3 (Improvements), 4 (Confidentiality), 5 (Warranty Disclaimer), 6
(Limitations of Liability), 7.4 (Effects of Termination), 8 (Dispute Management)
and 9 (General) survive the expiration or termination of this Agreement for any
reason.

8.    DISPUTE MANAGEMENT.

      8.1      APPLICABLE LAW; JURISDICTION. THIS AGREEMENT SHALL BE GOVERNED BY
            AND CONSTRUED AND ENFORCED IN ACCORDANCE WITH THE LAWS OF THE STATE
            OF CALIFORNIA, EXCLUDING CONFLICT OF LAW RULES AND PRINCIPLES. THE
            PARTIES AGREE THAT THE BANKRUPTCY COURT FOR THE NORTHERN DISTRICT OF
            CALIFORNIA SHALL HAVE EXCLUSIVE JURISDICTION TO DETERMINE ALL
            MATTERS RELATING TO THIS AGREEMENT AND THAT VENUE IS PROPER IN SUCH
            COURT. ALL PARTIES WAIVE ANY OBJECTIONS TO THE JURISDICTION (IN REM,
            PERSONAL OR SUBJECT MATTER) OF OR LAYING OF VENUE IN SUCH COURTS.
            ALL PARTIES HEREBY WAIVE PERSONAL SERVICE OF THE SUMMONS, COMPLAINT
            AND OTHER PROCESS ISSUED IN ANY SUCH ACTION OR SUIT AND AGREE THAT
            SERVICE OF SUCH SUMMONS, COMPLAINT AND OTHER PROCESS MAY BE MADE BY
            REGISTERED OR CERTIFIED MAIL ADDRESSED TO SUCH PARTY AT ITS ADDRESS
            SET FORTH IN THE PREAMBLE TO THIS AGREEMENT OR TO SUCH OTHER ADDRESS
            AS DESIGNATED IN ACCORDANCE WITH THIS AGREEMENT.

      8.2      WAIVER OF JURY TRIAL. EACH PARTY TO THIS AGREEMENT WAIVES THE
            RIGHT TO TRIAL BY JURY IN ANY ACTION, SUIT, PROCEEDING, OR
            COUNTERCLAIM OF ANY KIND ARISING OUT OF OR RELATED TO THIS AGREEMENT
            OR THE TRANSACTIONS CONTEMPLATED BY THIS AGREEMENT. EACH SUCH PARTY
            WARRANTS AND REPRESENTS THAT IT HAS REVIEWED THE FOREGOING WAIVERS
            WITH ITS LEGAL COUNSEL AND HAS KNOWINGLY AND VOLUNTARILY WAIVED ITS
            JURY TRIAL RIGHTS FOLLOWING CONSULTATION WITH LEGAL COUNSEL. IN THE
            EVENT OF LITIGATION, THIS AGREEMENT MAY BE FILED AS A WRITTEN
            CONSENT TO A TRIAL BY THE COURT.

9.    GENERAL.

      9.1      NOTICES. All notices under this Agreement must be delivered in
            writing by courier, electronic facsimile, electronic mail, or by
            certified or registered mail (postage prepaid and return receipt
            requested) to the other party at its address set forth on the
            signature page below or as amended by notice pursuant to this
            Section 9.1. If not received sooner, notice by mail shall be deemed
            received five (5) days after deposit in the U.S. mails.


                                       17.
<PAGE>
      9.2      RELATIONSHIP OF PARTIES. The parties hereto are independent
            contractors. Nothing in this Agreement shall be deemed to create an
            agency, employment, partnership, fiduciary or joint venture
            relationship between the parties. Neither party (nor any agent or
            employee of that party) is the representative of the other party for
            any purpose and neither party has the power or authority as agent,
            employee or in any other capacity to represent, act for, bind or
            otherwise create or assume any obligation on behalf of the other
            party for any purpose whatsoever.

      9.3      NO THIRD PARTY BENEFICIARIES. No party shall be deemed a
            third-party beneficiary to this Agreement.

      9.4      NO ADMISSION. Nothing in this Agreement shall constitute an
            admission by either party with respect to the validity, scope or
            infringement of any United States or foreign patent or other
            proprietary right except as otherwise provided in the Agreement.

      9.5      COSTS AND EXPENSES. Except as expressly provided for elsewhere in
            this Agreement, each party shall be responsible for all costs and
            expenses incurred by such party in performing its obligations or
            exercising its rights under this Agreement.

      9.6      CONSTRUCTION. In constructing the terms of this Agreement, no
            presumption shall operate in favor of or against any party as a
            result of its counsel's role in drafting the terms and provisions
            hereof.

      9.7      Assignment. This Agreement, and all rights and obligations
            hereunder, are assignable by Licensor. Licensee may not assign this
            Agreement, nor assign any rights or delegate any obligations under
            this Agreement, without the prior written consent of Licensor (which
            consent shall not be unreasonably withheld or delayed) except that
            Licensee may assign this Agreement, with prior written notice but
            without Licensor's written consent, to an entity with whom the
            Licensee merges or consolidates or to whom the Licensee sells
            substantially all of its assets relating to the Maintenance Service,
            but only if such assignee agrees to be bound by all provisions of
            this Agreement applicable to Licensee. Any attempted or purported
            assignment or delegation by Licensee in violation of this Section
            9.7 shall be null and void. This Agreement shall be binding on, and
            inure to the benefit of, the parties hereto, and the respective
            successors and assigns of each of them.

      9.8      WAIVER AND MODIFICATIONS. All waivers must be in writing. Any
            waiver by Licensor of a provision of this Agreement on one occasion
            shall not be deemed a waiver of any other provision or such
            provision on any other occasion. This Agreement may only be amended
            by a written document signed by both parties.

                        [THIS SPACE INTENTIONALLY BLANK]


                                      18.
<PAGE>
      9.9   ENTIRE AGREEMENT. This Agreement, including the Schedules hereto,
            constitutes the entire and final agreement between the parties
            regarding the Licensed Patents and supersedes all prior or
            contemporaneous, agreements, understandings and communications,
            whether, written and oral, relating to the Licensed Patents.

      9.10  COUNTERPARTS. This Agreement may be signed in several counterparts,
            each of which shall constitute an original.

      IN WITNESS WHEREOF, the undersigned have caused this Agreement to be
executed and delivered as of the Effective Date first set forth above by their
respective authorized representatives.

NETWORK APPLIANCE, INC.                   GLASSHOUSE TECHNOLOGIES, INC.

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


Address for Notice:                       Address for Notice:

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

---------------------------------------   --------------------------------------
Attn:                                     Attn:
      ---------------------------------        ---------------------------------
Fax:                                      Fax:
      ---------------------------------        ---------------------------------

                   [SIGNATURE PAGE TO PATENT LICENSE AGREEMENT]


                                      19.
<PAGE>
                                   SCHEDULE 1

                                LICENSED PATENTS



TITLE                                       PATENT NUMBER          STATUS         COUNTRY/REGION
-----                                       -------------          ------         --------------
                                                                         
Bridge for Direct Data Storage Device
Access                                        5,941,969            Issued                US

Bridge for Direct Data Storage Device
Access                                        6,253,271            Issued                US

Processing System with Dynamically
Allocatable Buffer Memory                     6,081,883            Issued                US

Characterization of Data Access Using
File System                                   6,442,682            Issued                US

Intelligent Virtual Volume Access             6,389,432            Issued                US

Method an Apparatus for Using
Intercepted Operator Messages to
Control Robotics                              5,465,329            Issued                US

System and Method for Reading and
Writing Disks Formatted for an
Operating System Foreign to Host
Computer                                      5,537,592            Issued                US

Parallel I/O Network File Server
Architecture                                  5,163,131            Issued                US

Parallel I/O Network File Server
Architecture                                     647414            Issued         Australia

Parallel I/O Network File Server
Architecture                                     670376            Issued         Australia

Parallel I/O Network File Server
Architecture                                    0490973            Issued          European

Parallel I/O Network File Server
Architecture                                    0490973            Issued                UK

Parallel I/O Network File Server
Architecture                                    1011772            Issued         Hong Kong

Parallel I/O Network File Server
Architecture                                     201574            Issued       South Korea

Parallel I/O Network File Server
Architecture                                      95447            Issued            Israel

Parallel I/O Network File Server                 116288            Issued            Israel

<PAGE>

                                                                       
Architecture

Parallel I/O Network File Server
Architecture                                     107646            Issued            Israel

Parallel I/O Network File Server
Architecture                                     107645            Issued            Israel

Parallel I/O Network File Server
Architecture                                     107644            Issued            Israel

Parallel I/O Network File Server
Architecture                                  5,355,435            Issued                US

Parallel I/O Network File Server
Architecture                                  5,802,366            Issued                US

Parallel I/O Network File Server
Architecture                                  5,931,918            Issued                US

Multiple Facility Operating System
Architecture                                  5,485,579            Issued                US

Multiple Facility Operating System
Architecture                                  6,065,037            Issued                US

Multiple Facility Operating System
Architecture                                     201772            Issued       South Korea

Multiple Facility Operating System
Architecture                                    2945757            Issued             Japan

Multiple Facility Operating System
Architecture                                      95449            Issued            Israel

Multiple Facility Operating System
Architecture                                    1014064            Issued         Hong Kong

Multiple Facility Operating System
Architecture                                    0490980            Issued          European

Multiple Facility Operating System
Architecture                                  2,066,566            Issued            Canada

Multiple Facility Operating System
Architecture                                     651321            Issued         Australia

Multiple Facility Operating System
Architecture                                    0490980            Issued                UK

Fault Tolerant NFS Server System and
Mirroring Protocol                            5,513,314            Issued                US

<PAGE>

                                                                            
High Performance Non-Volatile RAM
Protected Write Cache Accelerator
System Employing DMA and Data
Transferring Scheme (as amended)              5,701,516            Issued                US

High-Speed, Flexible
Source/Destination Data Burst Direct
Memory Access Controller                      5,175,825            Issued                US

High-Speed, Flexible
Source/Destination Data Burst Direct
Memory Access Controller                          95445            Issued            Israel

Bus Locking FIFIO Multi-Processing
Communication System                              95448            Issued            Israel

Image File Storage and Retrieval
System                                        5,761,655            Issued                US

Enhanced VMEbus protocol utilizing
pseudosynchronous handshaking and
block mode data transfer                      5,388,231            Issued                US

Method for transmitting commands
excluded from predefined command set          5,379,389            Issued                US

System and method for performing a
multi-file transfer operation                 5,053,945            Issued                US


U.S. AND FOREIGN APPLICATIONS:


                                                                            

Loosely Coupled-Multi Processor
Server                                         87120169           Pending            Taiwan

Coherent Device to Device Data
Replication                                  09/375,819           Pending                US

Intelligent Virtual Machines                 10/068,352           Pending                US

Microkernel for Real Time
Applications                                 09/408,149           Pending                US

Parallel I/O Network File Server
Architecture                                    2066443           Allowed            Canada

Multiple Facility Operating System
Architecture                                  2,358,807           Pending            Canada

Fault Tolerant NFS Server
System and Mirroring Protocol                  8-523008         Published             Japan

<PAGE>

                                                                         
Fault Tolerant NFS Server
System and Mirroring Protocol                98103865.9         Published         Hong Kong

Fault Tolerant NFS Server
System and Mirroring Protocol                96903668.0         Published          European

Fault Tolerant NFS Server
System and Mirroring Protocol                 2,211,654           Pending            Canada

High Availability Cluster Virtual
Server System                                09/911,902         Published                US

High Availability Cluster Virtual
Server System                             WO US02/23417         Published              WIPO

Active File Change Notification           WO US03/00704           Pending              WIPO

Active File Change Notification              10/341,811           Pending                US

Internet Cache                               09/324,801           Pending                US