definiens: means ( a ) the United States and foreign Patent Rights listed in Schedule 1.5 and, if any, the Option Patent Rights, ( b ) any Patent Rights arising from those Patent Rights during the Agreement Term, ( c ) any PatentRights resulting from [COMPANY] Improvements or [COMPANY] Collaboration IP, and ( d ) any other Patent Rights Controlled byAcceleron as of the Effective Date or during the Agreement Term ( but, in the case of Third Party Intellectual PropertyControlled by [COMPANY] during the Agreement Term, subject to Section 5.6.3(d ) ) ; all of the above ( a ) through ( d ) solely to theextent that such Patent Rights claim the manufacture or use of a Licensed Compound or a Licensed Product, claim acomposition of matter of or including a Licensed Compound or a Licensed Product, or are necessary or useful to Develop, Manufacture or Commercialize a Licensed Compound or a Licensed Product, in each case in the Field . For the avoidance ofdoubt, any Patent Rights that claim the use of a Licensed 3 THIS EXHIBIT HAS BEEN REDACTED AND IS THE SUBJECT OF A CONFIDENTIAL TREATMENTREQUEST