definiens: will be defined to mean any and all oncology associated antigens, provided that fromand after the third anniversary of the Effective Date of the Agreement, will be limitedto the oncology associated antigens designated by [COMPANY] in a written notice to Bluebird as thoseoncology associated antigens for which [COMPANY] reasonably intends to Develop Licensed Products, which written notice will be delivered to Bluebird within thirty ( 30 ) days after the third anniversary ofthe Effective Date of the Agreement, provided further that from and after the fifth anniversary of theEffective Date of the Agreement, will be limited to the oncology associated antigens and identified as such by [COMPANY] in a written notice to Bluebird, which written noticewill be delivered to Bluebird within thirty ( 30 ) days after the fifth anniversary of the Effective Date ofthe Agreement . For purposes of this Section 1.8(a)(iii ), an oncology associated antigen will be deemed when at least one in vitro assay of a chimeric antigen receptor ( CAR ) constructtargeting such oncology associated antigen, or of a genetically modified T cell targeting such oncologyassociated antigen, has been initiated ; b