Document:

January
      13, 2008

    

     

    Vycor
      Medical LLC

    80
      Orville Drive

    Suite
      100

    Bohemia,
      NY 11716

    Att:
      Kenneth Covello

    

    
      	 	
              Re:
                

            	
              Retainer
                for Legal Representation for Registration
                Statement

            

    

    

    Dear
      Mr.
      Coviello

    

    This
      letter sets forth our understanding whereby Vycor Medical LLC. or successors
      (“You” or the “Company”) has engaged this firm to represent the Company in
      connection with (i) preparing and filing the Company’s selling shareholder
      Registration on Form SB-2 and responding to all SEC legal comments in connection
      therewith until the comment process is complete as well as acting as liaison
      with Company’s management and outside accountants and consultants. (hereinafter
      collectively referred to as the “Matter”). In connection therewith, our
      understanding and agreement and fee structure is as follows: 

    

    
      	 	
              1.

            	
              (i)
                

            	
              If
                Regent invests than $60,000 in connection with the preparation and
                filing
                of the Registration Statement and continuing until the end of the
                Securities and Exchange Commission (“SEC”) Comment process.
                

            

    

    
      	 	
              (ii)

            	
              The
                fees shall be paid as follows: (a) $20,000 upon the signing of this
                agreement (b) $20,000 upon the filing of the Registration Statement
                and
                (c) $20,000 upon the effectiveness of the Registration Statement.
                

            

      	 	(iii)	In the event Regent does not invest we will agree
              to take
              up to half of this fee ($30,000 in value) in common stock of the Company
              at a market capitalization of $1,750,000. We will seek to register
              the
              stock on the aforementioned registration statement. Payments will be
              $10,000 upon signing, $10,000 upon filing and $10,000 upon effectiveness.
              All common stock would be due upon filing of Registration
              Statement

    

     

    2.
      At
      your request, we may also undertake to represent you with respect to other
      ongoing and new matters ("New Matters"). We will discuss such New Matters with
      you before work is commenced by us. Such New Matters will be billed to you
      at
      either our hourly rate or at a fixed project rate or monthly rate to be agreed
      to in advance of such work being performed. 

    

    For
      any
      New Matters, which are billed on an hourly basis, we shall keep records of
      the
      time we expend on your matter and will bill you for this time on a monthly
      basis. You will receive a monthly statement, detailing the services performed.
      New
      Matters may include documentation relating to financing transactions, converting
      the company to a C corporation, Blue Sky filings and preparation of Form 15c-211
      for NASD listings and other general corporate matters.

     

    

     

    

      61
        Broadway New York, New York 10006 212-930-9700 212-930-9725 Fax

      www.srff.com

    

    
      
         

      

      
         

        
          

        

      

      
         

      

    

     

    

    

    We
      assign
      hourly rates for each member of our legal staff based upon years of experience,
      specialization and level of professional attainment. The rates per hour of
      those
      persons who are expected to work on your matters are $175.00 per hour for
      paralegals, $375.00 to $450.00 per hour for associates, and $500.00 to $600
      for
      partners.

     

    3.
       The
      fees
      set forth above do not include out-of-pocket expenses associated with the
      Matter, which the Company may pay directly.

    

    4.
      This
      Agreement shall be governed by the laws of the State of New York and venue
      for
      any action hereunder shall be in New York County, New York. In the event there
      is a fee dispute, you may be entitled to have the dispute resolved through
      arbitration, pursuant to Part 137 of the Rules of the Chief Administrator of
      the
      Courts of the State of New York. 

     

     

    5. The
      payment of fees to us in the form of shares of common stock of the Company
      necessitates our informing you or reminding you of several things.

    

     

    
      	 	
              (i)

            	
              Our
                firm may generally be retained on either an hourly or flat fee basis,
                and
                that in either such case we may be paid in the form of cash and/or
                securities of the Company. After discussing these matters with you,
                and at
                your request, we may agree to accept payment from you for our services
                in
                the form of a combination of cash and securities of the Company.
                For the
                specific services outlined herein, we have reached this arrangement
                after
                giving consideration to the Company’s need to preserve and maintain cash
                for its continued business
                operations.

            

    

     

    
      	 	
              (ii)

            	
              You
                acknowledge and understand that the value of the securities may increase
                or decrease and you also recognize that the value that we may ultimately
                receive from the sale of such securities may be greater or lesser
                than the
                fees that we would otherwise have charged for such matters if you
                were to
                have paid us cash for such services. As a result, you agree that
                such fee
                arrangements are reasonable in light of such circumstances and
                considerations.

            

    

     

    
      	 	
              (iii)

            	
              As
                a result of our arrangement to be paid, in part, in the form of securities
                of the Company, we are required to inform you of the potential for
                a
                conflict of interest that may arise by virtue of our financial, business
                or personal interests that may result from our being a shareholder
                of the
                Company, which interests may be different from the interests typically
                present in an attorney-client relationship. Accordingly, we are required
                to advise you of your right to seek independent counsel with respect
                to
                our fee arrangement, and to obtain your written consent to such
                arrangement. Please note that we are not aware of anything that would
                indicate that our activities have been in any way limited by a financial
                interest of the firm or any lawyer in the firm. Nonetheless, before
                proceeding further, we felt that it was important that you consider
                the
                matters discussed in this letter.

            

    

     

    If
      this
      arrangement meets with your approval, please sign the enclosed copy of this
      letter and return it to us. Naturally, if you have any questions, please feel
      free to contact us at any time.

     

    

     

    

      61
        Broadway New York, New York 10006 212-930-9700 212-930-9725 Fax

      www.srff.com

    

    
      
         

      

      
         

        
          

        

      

      
         

      

    

     

    

    

    Very
      truly yours,

    

    

    SICHENZIA
      ROSS FRIEDMAN FERENCE LLP

    

    

    By:
      ____________________________

     

    Agreed
      and Accepted this

    ____
      Day
      of January, 2008

    

    Vycor
      Medical LLC

    

    By:_______________________________

    

    Wire
      to:   Citibank

    666
      Fifth
      Avenue

    New
      York,
      NY 10103

    A/C
      of
      Sichenzia Ross Friedman Ference LLP

    A/C#:  
      49206659

    ABA#:  
      021000089

    SWIFT
      Code: CITIUS33

     

    

    

      61
        Broadway New York, New York 10006 212-930-9700 212-930-9725 Fax

      www.srff.comHarbinger
      Capital Partners Master Fund I, Ltd.

    Harbinger
      Capital Partners Special Situations Fund, L.P.

    Harbinger
      Capital Partners Fund I, L.P.

    Harbinger
      Co-Investment Fund, L.P.

    555
      Madison Avenue, 16th Floor

    New
      York,
      NY 10022

    

    

    

    August
      22, 2008

     

    SkyTerra
      Communications, Inc.

    Mobile
      Satellite Ventures Subsidiary LLC

    Mobile
      Satellite Ventures L.P.

    10802
      Parkridge Boulevard

    Reston,
      VA 20191

    Attention:
      General Counsel

    

    Gentlemen:

    

    Reference
      is made to that certain Master Contribution and Support Agreement, dated as
      of
      July 24, 2008 (the “MCSA”)
      by and
      among (i) HARBINGER CAPITAL PARTNERS MASTER FUND I, LTD, an exempted company
      organized under the Laws of the Cayman Islands ("Harbinger
      Master"),
      (ii)
      HARBINGER CAPITAL PARTNERS SPECIAL SITUATIONS FUND, L.P., a Delaware limited
      partnership ("Harbinger
      Special"),
      (iii)
      HARBINGER CAPITAL PARTNERS FUND I, L.P., a Delaware limited partnership
      ("Harbinger
      Fund"),
      (iv)
      HARBINGER CO-INVESTMENT FUND, L.P., a Delaware limited partnership (the
      "Harbinger
      Satellite Fund",
      and
      together with Harbinger Master, Harbinger Special and Harbinger Fund,
      "Harbinger"),
      (v)
      SKYTERRA COMMUNICATIONS, INC., a Delaware corporation (the "Company"),
      (vi)
      MOBILE SATELLITE VENTURES SUBSIDIARY LLC, a Delaware limited liability company
      ("MSV
      LLC"),
      and
      (vii) MOBILE SATELLITE VENTURES L.P., a Delaware limited partnership
      ("MSV").
      Capitalized terms used in this letter agreement (this “Letter
      Agreement”)
      and
      not otherwise defined shall have the meanings accorded them in the
      MCSA.

    

    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, each of the Parties hereby agrees as follows.

    

    The
      undersigned shall, as promptly as practicable, take all actions necessary to
      consummate the actions set forth herein, including to amend the MCSA in
      accordance with Section 21.10 thereof, and to amend the Registration Rights
      Agreement in accordance with Section 5.7(b) thereof, as applicable, in order
      to
      reflect the matters set forth in Sections 1-3 below.

    

    
      
         

      

      
         

        
          

        

      

      
         

      

       

    

    1. TVCC.
      The
      MCSA and all exhibits, schedules and other documents to be delivered in
      connection with the consummation of the transactions contemplated thereby,
      shall
      each be amended such that TVCC, the TVCC Contribution Closing, and all
      references, terms, conditions, representations, warranties, covenants,
      liabilities or other obligations of the Parties with respect thereto, including
      without limitation the transfer of all of the TVCC LLC Interests from Harbinger
      Master and Harbinger Special to the Company in exchange for shares of Voting
      Common Stock in accordance with Section 2.1(c) of the MCSA, shall be deleted
      from the MCSA and all exhibits, schedules and other documents to be delivered
      in
      connection with the consummation of the transactions contemplated thereby.
      

    

    2. Termination
      Fee.
      As
      consideration for the amendment to the MCSA as set forth in Section 1 of this
      Letter Agreement, on the Closing Date, the Company shall issue to Harbinger
      10,300,000 fully-paid, non-assessable shares of Voting Common
      Stock.

    

    3. Registration
      Rights Agreement.
      As
      promptly as practicable, the Parties shall take all actions necessary to amend
      the definition of “Registrable Shares” in the Registration Rights Agreement to
      include the shares of Voting Common Stock to be issued to Harbinger pursuant
      to
      Section 2 hereof. 

    

    Except
      as
      expressly amended and modified in accordance with the terms of this Letter
      Agreement, the MCSA and the Registration Rights Agreement shall each remain
      unchanged and in full force and effect and are hereby ratified and confirmed
      in
      all respects.

    

    This
      Letter Agreement, together with the MCSA, the Stock Purchase Agreement, the
      Securities Purchase Agreement, the Registration Rights Agreement, the Consulting
      Agreement, the Confidentiality Agreement and the Confidentiality Side Letter
      (together with the schedules and exhibits thereto and the other documents
      delivered or to be delivered in connection herewith and therewith), constitutes
      the entire agreement among the Parties hereto, and supersedes all prior
      agreements and contemporaneous, arrangements, covenants, promises, conditions,
      undertakings, inducements, representations, warranties and negotiations,
      expressed or implied, oral or written, between the Parties, with respect to
      the
      subject matter hereof.

    

    This
      Letter Agreement shall be governed by and construed in accordance with the
      laws
      of the State of New York applicable to contracts made and performed in such
      state and without regard to the conflicts or choice of law provisions thereof
      that would give rise to the application of the domestic substantive law of
      any
      other jurisdiction.

    

    This
      Letter Agreement may be executed in several counterparts, each of which shall
      be
      deemed an original, but all of which together shall constitute one and the
      same
      Letter Agreement. Facsimile and electronic signatures on this Letter Agreement
      shall be deemed original signatures.  

     

    
      
         

      

      
         

        
          

        

      

      
         

      

    

    
 

    IN
      WITNESS WHEREOF, the
      Parties have duly executed this Letter Agreement as of the date and year first
      above written.

     

     

    
      	 	
              HARBINGER
                CAPITAL PARTNERS MASTER FUND I, LTD.

              

              By:
                Harbinger Capital Partners Offshore Manager, LLC, as investment
                manager

              

              By:
                /s/
                William R. Lucas,
                Jr.                               

              

              Name:
                 William
                R. Lucas, Jr.

              Title: Executive
                Vice President

              

              HARBINGER
                CAPITAL PARTNERS SPECIAL SITUATIONS FUND, L.P.

              

              By:
                Harbinger Capital Partners Special Situations GP, LLC, as general
                partner

              

              By:
                /s/ William R. Lucas,
                Jr.                               

              

              Name: William
                R. Lucas, Jr.

              Title: Executive
                Vice President

              

              HARBINGER
                CAPITAL PARTNERS FUND I, L.P.

              

              By:
                Harbinger Capital Partners GP, LLC, as general partner

              

              By:
                /s/ William R. Lucas,
                Jr.                               

              

              Name: William
                R. Lucas, Jr.

              Title: Executive
                Vice President

              

              HARBINGER
                CO-INVESTMENT FUND, L.P.

              

              By:
                Harbinger Co-Investment GP, LLC, as general partner

              

              By: HMC
                - New York, Inc., as managing member

              

              By:
                /s/ William R. Lucas,
                Jr.                               

              

              Name: William
                R. Lucas, Jr.

              Title: Executive
                Vice President

            

    

     

    
      
         

      

      
         

        
          

        

      

      
         

      

       

      
        	 	
                SKYTERRA
                  COMMUNICATIONS, INC.

                

                By:
                  /s/
                  Scott
                  Macleod                                         
                  

                Name: Scott
                  Macleod

                Title: Chief
                  Financial Officer

                

                MOBILE
                  SATELLITE VENTURES SUBSIDIARY LLC

                

                By:
                  /s/ Scott
                  Macleod                                         
                  

                Name: Scott
                  Macleod

                Title: Chief
                  Financial Officer

                

                MOBILE
                  SATELLITE VENTURES L.P.

                

                By:
                  /s/ Scott
                  Macleod                                         
                  

                Name: Scott
                  Macleod

                Title: Chief
                  Financial Officer

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