definiens: shall mean, with respect to a Shared Product, [COMPANY] Product, Unshared Product or TCL Product ( outside the US if SQZ has not exercise d the First TCL Opt Out or the Second TCL Opt Out o r worldwide if SQZ has exercised the First TCL Opt Ou t or the Second TCL Opt Out ), as applicable, on a Licensed Product - by - Licensed Product and country -b y - country basis, the period commencing on the First Commercial Sale of such Licensed Product in the app licable country until the later of ( i ) [ * * * * * * * * ] a fter First Commercial Sale in such country of such Licensed Pr oduct ( with regards to TCL Products, such period sh all expire [ * * * * * * * * ] after First Commercial Sale in su ch country of the first TCL Product that is a Licen sed Product ), or ( ii ) the last to expire Valid Claim of any SQZ Patent Rights, Joint Patent Rights or Roch e Product Specific Patent Rights ( and in the case of Shared P roducts, SQZ Patent Rights, Joint Patent Rights, Ro che Product Specific Patent Rights, or the Patent Right s of [COMPANY] or its Affiliates ) that Covers such Lice nsed Product