definiens: means the Chemistry Patents Controlled by Isis after the Restatement Date andhaving an earliest priority date of no later than [ * * ] or that is necessary to practice a Patent licensed hereunder;provided, however that ( a ) for any such Chemistry Patents that are acquired, licensed or invented that includefinancial or other obligations to a Third Party, the provisions of Section 11.8 will govern whether such ChemistryPatents will be included as an Isis Future Chemistry Patent, except Patents that constitute Isis ExcludedTechnology and ( b ) Isis Future Chemistry Patents do not include Patents that constitute Isis ExcludedTechnology, or Co - Exclusive ssRNAi Patents . Notwithstanding the foregoing, in the event of an Acquisitioninvolving [COMPANY], the date used in this definition will be automatically changed to the date of suchAcquisition