definiens: means ( a ) for all countries in the Territory outside North America, theperiod of time beginning on the date of First Commercial Sale in a particular country and ending, on a Licensed Product - by - Licensed Product and country - by - country basis, on the later of ( i ) thedate on which the offering for sale, selling, making, having made, using or importing suchLicensed Product is no longer covered by a Valid Claim of an [COMPANY] Patent Right in suchcountry and ( ii ) the eleventh ( 11th ) anniversary of the First Commercial Sale of such LicensedProduct 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 in North America andending, on a Licensed Product - by - Licensed Product and country - by - country basis, on the date onwhich the Commercialization of such Licensed Product in North America has ceased