definiens: shall mean, subject to Section 5.4.1 or 5.4.3, as applicable, ( i ) all PatentsControlled by [COMPANY] as of the Effective Date that are reasonably necessary or useful for the Parties toconduct their respective activities under the Discovery Program and Global Development Plan, ( ii ) Amgen’sinterest in Patents claiming Collaboration Technology, and ( iii ) any other Patents Controlled by Amgenduring the term of this Agreement that are reasonably necessary or directly useful for the conduct of theDiscovery Program ; provided, however, that with respect to Patents licensed by [COMPANY] from Third Partiesthat are within the foregoing clause ( iii ), and not clause ( i ) or ( ii ), such Patents shall not be included withinthe [COMPANY] Patents for purposes of the licenses to [COMPANY] hereunder unless and until [COMPANY] agrees withAmgen in writing to assume such payment obligations as they relate to Compounds and Products