definiens: shall mean ( a ) all patents and patent applications claiming any invention or discoverywhich was conceived or reduced to practice during the Collaboration Term and in the course of the Collaboration, byemployees or agents of Ambit, [COMPANY] or any of their respective Affiliates, either alone or jointly ( including, withoutlimitation, the synthesis and composition of matter of any Collaboration Compound or any Collaboration Product, or methodof use thereof ) ; and ( b ) any divisions, continuations, continuations - in - part, reissues, reexaminations, extensions or othergovernmental actions which extend any of the subject matter of the patent applications or patents in ( a ) above, and anysubstitutions, confirmations, registrations, revalidations, or additions of any of the foregoing ; provided, however, thatCollaboration -4 - Patents shall not include any Ambit Patents, [COMPANY] Patents or Licensed Compound Patents