definiens: means the period from the Closing Date until the latest of ( a ) theexpiration of the last to expire Valid Claim of the Rhofade Assigned Patents, Non - RhofadeAssigned Patents, Rhofade Licensed Patents or In - Licensed Aspect IP ( including, foravoidance of doubt, any continuations, divisions, continuations - in - part, registrations, reissues, reexaminations or extensions of such Patents ) Covering the Non - OxymetazolinePurpura Product, the Oxymetazoline Purpura Product, the Oxymetazoline RosaceaProduct, the Rhofade Product or the Rhofade Purpura Product, as applicable, and ( b ) thedate that is ten ( 10 ) years following the Closing Date, in each case for clauses ( a ) and ( b),on a country - by - country basis