1 EXHIBIT 3.3 SECRETARY OF STATE DIVISION OF CORPORATIONS FILED 09:00 AM 07/21/1993 713202013 - 2344595 CERTIFICATE OF LIMITED PARTNERSHIP OF ORBCOMM U.S. PARTNERS, L.P. This Certificate of Limited Partnership of ORBCOMM U.S. Partners, L.P. (the "Partnership"), dated as of June 30, 1993, has been duly executed and is being filed by the undersigned for the purposes of forming a limited partnership under Section 17-101 through 17-1109 of Chapter 17, Title 6 of the Code of the State of Delaware. I. Name The name of the Partnership is ORBCOMM U.S. Partners, L.P. II. Registered Office Registered Agent The registered office of the partnership in the State of Delaware in located at 1013 Centre Road, City of Wilmington, County of New Castle, Delaware 19801. The name of the registered agent of the Partnership at that address is Corporation Service Company. III. Name and Address Of General Partners The name and mailing address of the general partners of the Partnership are: Orbital Communications Corporation 21700 Atlantic Boulevard Dulles, Virginia 20166 Teleglobe mobile Partners 1000 rue de La Gauchetiere ouest Montreal, Quebec H3B 4X5 Canada 2 IN WITNESS WHEREOF, each of the undersigned general partners has duly executed this instrument as of the date first written above. ORBITAL COMMUNICATIONS CORPORATION By: /s/ ALAN L. PARKER ---------------------------------- Alan L. Parker, President TELEGLOBE MOBILE PARTNERS By: Teleglobe Mobile Investment Inc., its Managing Partner By: /s/ GUTHRIE J. STEWART ------------------------------ Guthrie J. Stewart, Secretary -2- 3 CERTIFICATE OF AMENDMENT OF CERTIFICATE OF LIMITED PARTNERSHIP OF ORBCOMM U.S. PARTNERS, L.P. This Certificate of Amendment of Certificate of Limited Partnership of ORBCOMM U.S. PARTNERS, L.P., a limited partnership formed pursuant to the Revised Uniform Limited Partnership Act of the State of Delaware (the "Act"), is filed pursuant to Section 17-202(c)(3) of the Act. FIRST: The name of the limited partnership is ORBCOMM U.S. Partners, L.P. SECOND: The general partners of said partnership, at a meeting duly convened and held, adopted the following amendment to the Certificate of Limited Partnership: RESOLVED, that the name of the partnership be changed to "ORBCOMM USA, L.P." IN WITNESS WHEREOF, the undersigned general partner has duly executed this instrument as of April 4, 1995. ORBITAL COMMUNICATIONS CORPORATION By: /s/ ALAN L. PARKER ----------------------------------- Alan L. Parker, President STATE OF DELAWARE SECRETARY OF STATE DIVISION OF CORPORATIONS FILED 09:00 AM 04/13/1995 950082565 - 2344595