definiens: shall mean the period commencing upon the Effective Date, and expiring, on a Licensed Product - by - Licensed Product, Niche Ca ndidate - by- Niche Candidate, and Residual Product - by - Residual Product basis, upo n the later to occur of the expiration, on a countr y - by -country basis, of : ( a ) the last -to -expire Valid Claim of all : ( i ) Collaboration Patents ; ( ii ) Patents within the Background IPH IPR ; ( iii ) Patents within the Background NN IPR ; ( iv ) Patents within the Independent IPH IPR listed in Sc hedule 9.5.4(a ) ; and ( v ) Patents within the Independent NN IPR listed in Sch edule 9.5.4(b ) ; that would be infringed by the unlicensed manufa cture, use, importation or sale in or into such country of such Licensed Product, Nich e Candidate or Residual Product, or ( b ) a period of ten ( 10 ) years following immediately after the First Commerc ial Sale of a Licensed Product, Niche Candidate or Residual Pro duct in the relevant country