definiens: means ( a ) for all countries in the Territory outside North America, theperiod of time beginning on the date of First Commercial Sale of a Licensed Product in theCelgene Field in a particular country and ending, on a Licensed Product - by - Licensed Productand country - by - country basis, on the later of ( i ) the date on which the offering for sale, selling, making, having made, using or importing such Licensed Product in the [COMPANY] Field is nolonger covered by a Valid Claim of an [COMPANY] Patent Right in such country and ( ii ) theeleventh ( 11th ) anniversary of the First Commercial Sale of such Licensed Product in theCelgene Field in such country ; and ( b ) for all countries in North America, to reflect Acceleron’scontribution in connection with the Development Costs and co - Promotion of the LicensedProduct, the period of time beginning on the date of First Commercial Sale of a Licensed Productin the [COMPANY] Field in North America and ending, on a Licensed Product - by - Licensed Productand country - by - country basis, on the date on which the Commercialization of such LicensedProduct in the [COMPANY] Field in North America has ceased