This excerpt taken from the ATVI 10-K filed Jun 9, 2005.
Infringement of SCEA Intellectual Property Rights By Third Parties.
In the event that Publisher discovers or otherwise becomes aware that any SCEA Intellectual Property Rights have been or are being infringed upon by any third party, Publisher shall promptly notify SCEA. SCEA shall have the sole right, in its discretion, to institute and prosecute lawsuits against third parties for such infringement of SCEA Intellectual Property Rights. Any lawsuit shall be prosecuted solely at the cost and expense of SCEA and all sums recovered in any such lawsuits, whether by judgment, settlement or otherwise shall belong solely to SCEA. Upon request of SCEA, Publisher shall execute all papers, testify on all natters aid otherwise cooperate in every way necessary and desirable for the prosecution of any such lawsuit. SCEA shall reimburse Publisher for the reasonable expenses incurred as a result of such cooperation, but unless authorized by other provisions of this Agreement, not costs and expenses attributable to the conduct of a cross-claim or third party action.