definiens: shall mean collectively Afecta ’s right, title and i nterest in the following intellectual property rights : ( a ) the patents liste d in Exhibit C ; ( b ) any and all extensions or resto rations by existing or future extension or restoration mechani sms, including without limitation, supplementary pr otection certificates or the equivalent thereof, substitutio ns, confirmations, re - registrations, reexaminations, revalidations, reissues, renewals, extensions or additions to any such foregoing patents that existed prior to execut ion of the Notice Letter and ( c ) any improvements, modificatio ns or expansions to the patent(s ) as a result of wo rk produced solely by Afecta in fields other than the Field with regard to Afecta Products . Notwithstandi ng the foregoing, the definition of Afecta Patent Rights s hall exclude any improvements, modifications or exp ansions to the patent(s ) by work produced solely by Supernus o r in collaboration with Afecta, after the execution of the Notice Letter, which rights shall belong to Supernu s