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INTELLECTUAL PROPERTY SECURITY AGREEMENT

         This Intellectual Property Security Agreement (as amended, supplemented
or otherwise modified from time to time, this "Agreement"), dated as of March
14, 2007, is by and between SiriCOMM, Inc., a Delaware corporation ("Assignor"),
and Sunflower Capital, LLC, a Missouri limited liability company ("Assignee").

         WHEREAS, Assignee has agreed to make a loan (the "Loan") to Assignor,
pursuant to that certain Loan Agreement, dated as of the date hereof, by and
between Assignor and Assignee (the "Loan Agreement"); and

         WHEREAS, in order to induce Assignee to enter into the Loan Agreement
and to make the Loan, Assignor agreed to grant a continuing Lien in the
Collateral (as defined below) to secure the Obligations (as defined below);

         NOW, THEREFORE, in consideration of the above recitals and for other
good and valuable consideration, the receipt and adequacy of which are hereby
acknowledged, the parties hereto agree as follows:

         1. Defined Terms. All capitalized terms used but not defined herein
(including the recitals hereto) have the meanings ascribed to them in the Loan
Agreement. All other terms, unless the context otherwise requires, have the
meanings provided by the Uniform Commercial Code to the extent the same are used
or defined therein.

         2. Assignment, Patent Mortgage and Grant of Security Interest. As
collateral security for the prompt and complete payment and performance of all
of Assignor's present or future indebtedness, obligations and liabilities of
every kind and character owed to Assignee arising out of the Loan Documents (the
"Obligations"), Assignor hereby grants a security interest and mortgage to
Assignee, as security, in Assignor's entire right, title and interest in, to and
under the following (the "Collateral"):

                  (a) any and all copyright rights, copyright applications,
         copyright registrations and like protections in each work or authorship
         and derivative work thereof, whether published or unpublished and
         whether or not the same also constitutes a trade secret, now or
         hereafter existing, created, acquired or held, including without
         limitation those set forth on Exhibit "A" attached hereto
         (collectively, the "Copyrights");

                  (b) any and all trade secrets, proprietary information,
         customer lists, manufacturing techniques, formulas, know-how, product
         formulations, and any and all intellectual property rights in computer
         software and computer software products, now or hereafter existing,
         created, acquired or held;

                  (c) any and all design rights which may be available to
         Assignor now or hereafter existing, created, acquired or held;

                  (d) all patents, patent applications and like protections
         including, without limitation, improvements, divisions, continuations,
         renewals, reissues, extensions and continuations-in-part of the same,
         now or hereafter existing, created, acquired or held, including without
         limitation the patents and patent applications set forth on Exhibit "B"
         attached hereto (collectively, the "Patents");

                  (e) any trademark and servicemark rights, whether registered
         or not, applications to register and registrations of the same and like
         protections, all trade names, trade styles, designs, and the like, and
         all elements of package or trade dress of goods, now or hereafter
         existing, created, acquired or held, and the entire goodwill of the
         business of Assignor connected with and symbolized by such trademarks,
         including without limitation those set forth on Exhibit "C" attached
         hereto (collectively, the "Trademarks");

                  (f) any and all claims for damages by way of past, present and
         future infringement of any of the rights included above, with the
         right, but not the obligation, to sue for and collect such damages for
         said use or infringement of the intellectual property rights identified
         above;

                  (g) all licenses or other rights to use any of the Copyrights,
         Patents or Trademarks, and all license fees and royalties arising from
         such use;

                  (h) all amendments, extensions, renewals and extensions of any
         of the Copyrights, Trademarks or Patents; and

                  (i) all proceeds and products of the foregoing, including
         without limitation all payments under insurance or any indemnity or
         warranty payable in respect of any of the foregoing.

         3. Authorization and Request. Assignor authorizes and requests that the
Register of Copyrights and the Commissioner of Patents and Trademarks record
this Agreement. Assignor hereby authorizes Assignee to file with the appropriate
filing office, now or hereafter from time to time, financing statements,
continuation statements, and amendments thereto, naming Assignor as debtor
covering all assets of Assignor, including but not limited to any specific
listing, identification, or type of all or any portion of assets of Assignor.
Assignor acknowledges and agrees by evidence of its signature below, this
authorization is sufficient to satisfy the requirements of Revised Article 9 of
the Uniform Commercial Code, July 1, 2001 revisions.

         4. Covenants and Warranties. Assignor represents, warrants, covenants
and agrees as follows:

                  (a) Assignor is the sole and lawful owner of the Collateral,
         except for non-exclusive licenses granted by Assignor to its customers
         in the ordinary course of business and except for Permitted
         Encumbrances.

                  (b) Performance of this Agreement does not conflict with or
         result in a breach of any agreement to which Assignor is a party or by
         which Assignor is bound.

                  (c) During the term of this Agreement, Assignor will not
         transfer or otherwise encumber any interest in the Collateral, except
         for licenses granted by Assignor in the ordinary course of business and
         for Permitted Encumbrances.

                  (d) Each of the Patents is valid and enforceable, and no part
         of the Collateral has been judged invalid or unenforceable, in whole or
         in part, and no claim has been made that any part of the Collateral
         violates the rights of any third party.

                  (e) Assignor shall promptly advise Assignee of any material
         change in the composition of the Collateral, including but not limited
         to any subsequent ownership right of Assignor in or to any Trademark,
         Patent or Copyright not specified in this Agreement,

                  (f) Assignor shall at its expense (i) protect, defend and
         maintain the validity and enforceability of the Trademarks, Patents and
         Copyrights, (ii) use its best efforts to detect infringements of the
         Trademarks, Patents and Copyrights and promptly advise Assignee in
         writing of material infringements detected and (iii) not allow any
         Trademarks, Patents or Copyrights to be abandoned, forfeited or
         dedicated to the public without the written consent of Assignee, which
         shall not be unreasonably withheld,

                  (g) Assignor shall promptly register the most recent version
         of any of Assignor's Copyrights, if not so already registered, and
         shall, from time to time, execute and file such other instruments, and
         take such further actions as Assignee may request from time to time to
         perfect or continue the perfection of Assignee's interest in the
         Collateral, at Assignor's sole expense,

                  (h) This Agreement creates, and in the case of after acquired
         Collateral, this Agreement will create at the time Assignor first has
         rights in such after acquired Collateral, in favor of Assignee a valid
         and perfected first priority security interest in the Collateral in the
         United States securing the payment and performance of the Obligations
         owed to Assignee upon making the filings referred to in clause (i)
         below.

                  (i) Except for, and upon, the filing with the Delaware
         Secretary of State or other appropriate authority of appropriate UCC-1
         financing statements, and the filing with the United States Patent and
         Trademark Office with respect to the Patents and Trademarks and the
         Register of Copyrights with respect to the Copyrights necessary to
         perfect the security interests created hereunder, and, except as has
         been already made or obtained, no authorization, approval or other
         action by, and no notice to or filing with, any governmental authority
         or regulatory body is required either (i) for the grant by Assignor of
         the security interest granted hereby or for the execution, delivery or
         performance of this Agreement by Assignor or (ii) for the perfection in
         the United States or the exercise by Assignee of its rights and
         remedies hereunder.

                  (j) All information heretofore, herein or hereafter supplied
         to Assignee by or on behalf of Assignor with respect to the Collateral
         is accurate and complete in all material respects.

                  (k) Assignor shall not enter into any agreement that would
         materially impair or conflict with Assignor's obligations hereunder
         without Assignee's prior written consent. Assignor shall not permit the
         inclusion in any contract to which it becomes a party of any provisions
         that could or might in any way impair or prevent the creation of a
         security interest in Assignor's rights and interests in any property
         included within the definition of the Collateral acquired under such
         contracts.

                  (l) Upon any officer of Assignor obtaining knowledge thereof,
         Assignor will promptly notify Assignee in writing of any event that
         materially adversely affects the value of any of the Collateral, the
         ability of Assignor or Assignee to dispose of any of the Collateral or
         the rights and remedies of Assignee in relation thereto, including the
         levy of any legal process against any of the Collateral.

         5. Assignee's Rights. Assignee shall have the right, but not the
obligation, to take, at Assignor's sole expense, any actions that Assignor is
required under this Agreement to take but which Assignor fails to take. Assignor
shall reimburse and indemnify Assignee for all costs and expenses incurred in
the reasonable exercise of its rights under this Section 5.

         6. Inspection Rights. Assignor hereby grants to Assignee and its
employees, representatives and agents the right to visit, during reasonable
hours upon prior reasonable notice to Assignor, any of Assignor's and its
subcontractors' plants and facilities that manufacture, install or store
products (or that have done so during the prior six-month period) that are sold
under any of the Collateral, and to inspect the products and quality control
records relating thereto upon reasonable notice to Assignor and as often as may
be reasonably requested.

         7. Further Assurances; Attorney in Fact.

                  (a) On a continuing basis, Assignor will, subject to any prior
         licenses, encumbrances and restrictions and prospective licenses
         disclosed to and/or approved by assignee, make, execute, acknowledge
         and deliver, and file and record in the proper filing and recording
         places in the United States, all such instruments, including
         appropriate financing and continuation statements and collateral
         agreements and filings with the United States Patent and Trademark
         Office and the United States Register of Copyrights, and take all such
         action as may reasonably be deemed necessary or advisable, or as
         requested by Assignee, to perfect Assignee's security interest in all
         Copyrights, Patents and Trademarks and otherwise to carry out the
         intent and purposes of this Agreement, or for assuring and confirming
         to Assignee the grant or perfection of a security interest in all
         Collateral.

                  (b) Assignor hereby irrevocably appoints Assignee as
         Assignor's attorney-in-fact, with full authority in the place and stead
         of Assignor and in the name of Assignor, Assignee or otherwise, from
         time to time in Assignee's discretion, to take any action and to
         execute any instrument which Assignee may deem necessary or advisable
         to perfect or to give public notice of the security interest in the
         Collateral granted hereunder or, during the continuance of an Event of
         Default, to exercise rights and remedies with respect to the
         Collateral, including:

                           (i) to modify, in its sole discretion, this Agreement
                  without first obtaining Assignor's approval of or signature to
                  such modification by amending Exhibit "A", Exhibit "B" and
                  Exhibit "C" hereof, as appropriate, to include reference to
                  any right, title or interest in any Copyrights, Patents or
                  Trademarks acquired by Assignor after the execution hereof or
                  to delete any reference to any right, title or interest in any
                  Copyrights, Patents or Trademarks in which Assignor no longer
                  has or claims any right, title or interest;

                           (ii) to file, in its sole discretion, one or more
                  financing or continuation statements and amendments thereto,
                  relative to any of the Collateral without the signature of
                  Assignor where permitted by law; and

                           (iii) upon an Event of Default, to execute and file
                  any documents and to take any actions deemed necessary or
                  appropriate by Assignee to cause the Collateral to be assigned
                  or transferred to Assignee or any purchaser of the Collateral
                  at a foreclosure sale, and to cause title to any of the
                  Collateral to be registered in the name of Assignee or any
                  purchaser of the Collateral at a foreclosure sale.

         8. Remedies. Upon the occurrence of an Event of Default, Assignee shall
have the right (a) to declare all Obligations owed to Assignee immediately due
and payable, (b) to exercise any rights and remedies Assignee may have under
this Agreement or any other Loan Document, or applicable law, and (c) to
exercise all the remedies of a secured party under the applicable Uniform
Commercial Code, as amended or in effect from time to time, including without
limitation the right to require Assignor to assemble the Collateral and any
tangible property in which Assignee has a security interest and to make it
available to Assignee at a place designated by Assignee. Assignee shall have a
nonexclusive, royalty free license to use the Copyrights, Patents and Trademarks
to the extent reasonably necessary to permit Assignee to exercise its rights and
remedies upon the occurrence of an Event of Default. Assignor will pay any
expenses (including attorneys' fees) incurred by Assignee in connection with the
exercise of any of Assignee's rights hereunder, including without limitation any
expense incurred in disposing of the Collateral. All of Assignee's rights and
remedies with respect to the Collateral shall be cumulative.
         9. Indemnity. Assignor agrees to defend, indemnify and hold harmless
Assignee and its officers, employees, and agents against: (a) all obligations,
demands, claims, and liabilities claimed or asserted by any other party in
connection with the transactions contemplated by this Agreement, and (b) all
losses or expenses in any way suffered, incurred, or paid by Assignee as a
result of or in any way arising out of, following or consequential to
transactions between Assignee and Assignor, whether under this Agreement or
otherwise (including without limitation attorneys fees and expenses), except for
losses arising from or out of Assignee's gross negligence or willful misconduct.

         10. Termination. At such time as Assignor shall completely satisfy all
of the Obligations secured hereby, Assignee shall execute and deliver to
Assignor all deeds, assignments and other instruments as may be necessary or
proper to terminate Assignee's security interest in the Collateral hereunder,
subject to any disposition thereof which may have been made by Assignee pursuant
hereto.

         11. Course of Dealing. No course of dealing, nor any failure to
exercise, nor any delay in exercising any right, power or privilege hereunder
shall operate as a waiver thereof.

         12. Amendments. This Agreement may be amended only by a written
instrument signed by Assignor and Assignee.

         13. Counterparts. This Agreement may be executed in two or more
counterparts, each of which shall be deemed an original but all of which
together shall constitute the same instrument.

         14. Governing Law and Jurisdiction. To the extent not governed by
Federal law, this Agreement shall be governed by the laws of the State of
Missouri, without regard for choice of law provisions. Assignor and Assignee
consent to the nonexclusive jurisdiction of any state or federal court in the
State of Missouri.

         IN WITNESS WHEREOF, the parties hereto have executed this Agreement on
the day and year first above written.

                         SIRICOMM, INC.

                         By:  /s/ Mark L. Grannell
                             -------------------------------------------------
                             Mark L. Grannell, President

                         SUNFLOWER CAPITAL, LLC

                         By: /s/ William P. Moore, III
                             --------------------------------------------
                             William P. Moore, III, not individually, but in his
                             capacity as Trustee of the William P. Moore III
                             Revocable Trust Dated October 9, 2001, Member

STATE OF                                 )
                                         )       SS.
COUNTY OF                                )

         On this ____ day of March, 2007, before me appeared
_________________________, to me personally known, who being by me duly sworn
did say that he/she is the ________________________________ of SiriCOMM, Inc., a
Delaware corporation, and that said instrument was signed and sealed on behalf
of said corporation by authority of its Board of Directors, and he/she
acknowledged said instrument to be the free act and deed of said corporation.

         IN WITNESS WHEREOF, I have hereunto set my hand and affixed my official
seal in the County and State aforesaid, the day and year first above written.

                                                      --------------------------
                                                      Notary Public
My Commission Expires:
--------------------------

<PAGE>

                                   EXHIBIT "A"
                                   COPYRIGHTS

<PAGE>

                                   EXHIBIT "B"
                                     PATENTS

<PAGE>

                                   EXHIBIT "C"
                                   TRADEMARKSQuickLinks
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Exhibit 4.13    
    

[JANA
PARTNERS LLC LETTERHEAD] 

January 7,
2007 

Forest
Oil Corporation

707 17th Street, Suite 3600

Denver, Colorado 80202

Attention: H. Craig Clark

President and Chief Executive Officer 

Ladies &
Gentlemen, 

JANA
Partners LLC ("JANA"), on behalf of various funds and accounts under its management and control, has agreed pursuant to a Voting Agreement dated January 7, 2007 by and among Forest Oil
Corporation, MJCO Corporation, JANA Master Fund, Ltd. and JANA Piranha Master Fund, Ltd. (the "Voting Agreement") to vote all shares owned beneficially or of record by the Stockholders
in favor of the Mergers and as otherwise set forth in the Voting Agreement, and to certain related terms and conditions. All terms used herein and not defined shall have the same definition as in the
Voting Agreement. 

JANA
hereby agrees that, from the date hereof until one year from the Merger I Effective Time, neither it nor the Stockholder nor any of their affiliates or associates (as each such term is defined in
Rule 12b-2 of the Securities Exchange Act of 1934, as amended (the "Exchange Act")), directly or indirectly, shall (and neither it nor its affiliates or associates shall assist or
encourage others to), without the prior written consent of Parent: (i) seek or propose to influence or control the management or policies of Parent or obtain representation on Parent's Board of
Directors, or solicit, or participate in the solicitation of, any proxies or consents with respect to any securities of Parent, or make any public announcement with respect to Parent (except as
required by law) or any of the foregoing or request permission to do any of the foregoing; (ii) submit a proposal for, or offer of (without or without conditions) any extraordinary transaction
(including, but not limited to, a tender offer, exchange offer, merger, acquisition or consolidation) involving Parent or its securities or assets; or (iii) enter into any discussions,
negotiations, arrangements or understandings with any third party with respect to any of the foregoing, or otherwise form, join or in any way participate in a "group" (as defined in
Section 13(d)(3) of the Exchange Act) in connection with any of the foregoing, or otherwise encourage any third party to do any of the foregoing. As used in this Section 5(c), the
term "securities" shall mean any securities of a party and any direct or indirect warrants, rights or options to acquire securities of such party. 

This
letter agreement shall be governed by the laws of the state of New York. 

	

JANA PARTNERS LLC	
 	

 
	

/s/  BARRY ROSENSTEIN      
 Name:  Barry Rosenstein

Title:    Managing Partner	
 	

 
	
ACKNOWLEDGED AND AGREED:	
 	

 
	

FOREST OIL CORPORATION	
 	

 
	

/s/  H. CRAIG CLARK      
 Name:  H. Craig Clark

Title:    President & CEO	
 	

 

QuickLinks

Exhibit 4.13

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