definiens: means any Improvement of a Phage Display process or any other technology, proce ~ s, or methodology ( each as claimed in or covered by any of the CAT Licensed Patents, [COMPANY] Supplemental Patents, Enzon Supplemental Patents, CAT Background Know - How, [COMPANY] Supplemental Know - How or Enzon Supplemental Know - How, as the case may be ) that satisfies all of the following criteria : ( A ) is first conceived or reduced to practice withinDltj~,;{'rO)yearf of the Effective Date ; provided, however, that upon the request of [COMPANY] or Enzon, as the case may be, at any time during the fil'Jf;:(l)-yeaj / Period following the date that is / itile(9)yeari / from the Effective Date and upon demonstratIon by [COMPANY] or Enzon, as the case may be, of good commercial, technical, or legal reasons for extension of the foregoingtip's(l())::ye < iperiod, the Parti ~ sagree to negotiate in good faith the potential extension of such period for one ( 1 ) additionall\re(~)-ye ~ eriod, with the consent by the Parties to such extension not to be withheld absent demonstration of good commercial, technical, or legal reasons for opposing such extension ; and ( B ) is developed by or on behalf of CAT or its Affiliates ; provided, lwwever, that the foregoing will exclude any such Improvement to the extent that CAT is not permitted to disclose, license or sublicense such improvement, modification or adaptation to [COMPANY] or Enzon, as applicable, as a result of an obligation of CAT to a Third Party