This excerpt taken from the XMSR 8-K filed Jul 24, 2006.
PATENTS AND COPYRIGHTS
6.1. Ownership of Inventions and Works of Authorship. EMPLOYEE agrees that all Inventions made, conceived, discovered, developed or reduced to practice by EMPLOYEE and all software and other works of authorship created by EMPLOYEE, either alone or with others, at any time, within or without normal working hours, during the term of this Agreement, arising out of such employment or based upon Confidential Information, or pertinent to any field of business or research in which, during such employment, XM is engaged or (if such is known or ascertainable by EMPLOYEE) is considering engaging, whether or not patented or patentable, shall be and remain the sole property of XM with respect to all rights of EMPLOYEE arising from any discovery, conception, development, reduction to practice, or creation by EMPLOYEE. XM shall have the full right to assign, license, or transfer all rights thereto.
6.2. Disclosure of Inventions and Works of Authorship. EMPLOYEE shall promptly make full disclosure to XM or to an authorized representative thereof of all information relating to the making, conception, discovery, development, creation or reduction to practice of Inventions, or of software and other works of authorship owned by XM pursuant to Section 6.1 above.
6.3. Patent and Copyright Applications. At the request of XM and at XMs expense, EMPLOYEE shall execute such documents and perform such acts as XM deems necessary to obtain patents or the like on such Inventions or copyright registrations for such software and other works of authorship in any jurisdiction or jurisdictions. Such obligation shall continue beyond the term of this Agreement. In the event that XM is unable because of EMPLOYEEs mental or physical capacity or for any other reason to secure EMPLOYEEs signature to apply for or to pursue any applications for patent or copyright covering Inventions, software and other works of authorship owned by XM pursuant to Section 6.1, then EMPLOYEE hereby irrevocably designates and appoints XM as EMPLOYEEs agent and attorney in fact, upon prior notice, to act for and in his behalf and stead to execute and file any such applications and to do all other lawfully permitted acts to further the prosecution and issuance of patents and copyright registrations thereon with the same legal force and effect as if executed by EMPLOYEE. EMPLOYEE further agrees not to file any patent applications relating to or describing or otherwise disclosing any Confidential Information or any such Inventions, or to claim any copyright or file any applications to register any copyright in such software or other works of authorship, except with the prior written consent of XM.
6.4. Assignment of Inventions and Works of Authorship. EMPLOYEE agrees to assign to XM or it Affiliates all of EMPLOYEEs right, title and interest in and to any and all such Inventions and the patent applications and patents relating thereto and to the copyright in any and all such software and other works of authorship and any copyright applications and registrations relating thereto conceived, reduced to practice, discovered, created or otherwise developed by EMPLOYEE and owned by XM pursuant to Section 6.1 above.