definiens: shall mean, with respect to ( a ) any Back Data Sets or Proposed Target Gene Data Sets Delivered to [COMPANY] hereunder, the period commencing when such Back Data Sets or Proposed Target Gene Data Sets are Delivered to [COMPANY] and ending on the later of ( i ) the [ * ] of the date of such Delivery, or ( ii ) such later date as may be obtained if [COMPANY] exercises its rights of extension under Section 2.9.2, or its option for a license under Sections 2.10.1 or 2.10.2 and/or 4.2 ; or ( b ) any Data Set ( other than any Data Se t included in the Back Data Sets or Proposed Target Gene Data Sets ) Delivered to [COMPANY] hereunder during the Subscription Term, the period commencing when such Data Set is Delivered to [COMPANY] and ending on the later of ( i ) the second ( 2nd ) anniversary of the date of such Delivery, ( ii ) the third ( 3rd ) anniversary of the Effective Date of this * Confidential portions of this document have been redacted and have been filed separately with the Commission