definiens: means all Know - How that is ( a ) Controlled by [COMPANY] Idec or its Affiliates at anytime during the Term ; ( b ) used by or on behalf of [COMPANY] Idec or its Affiliates in the development or commercialization of aCollaboration Product and ( c ) reasonably necessary or useful for PDL to ( i ) perform its obligations under this Agreement or(ii ) develop or commercialize a Collaboration Product or Royalty Product in the Field ; provided that [COMPANY] Idec Know - Howshall not include methods of manufacturing, production and test methods, procedures and batch records, manufacturing andtesting summary data, process and assay validation information, designing, developing or preparing Antibodies includingmethods of humanizing Antibodies, methods of reducing the immunogenicity of Antibodies, methods of modifying effectorfunction, and methods of increasing the affinity or half - lives of Antibodies, unless necessary for PDL to perform itsDevelopment or Commercialization obligations hereunder