definiens: means, collectively, ( i ) the Patent Security Agre ement, dated November 2, 2012, made by Defined Diagnostics ( f / k/ a Wellstat Diagnostics LLC ) in favor of PDL BioPhar ma, Inc., ( ii ) the Patent Security Agreement, dated Aug ust 20, 2013, made by Wellstat Therapeutics LLC in favor of PDL BioPharma, Inc., ( iii ) the Patent Security Agre ement, dated August 20, 2013, made by Wellstat BioC atalysis LLC in favor of PDL BioPharma, Inc., ( iv ) the Paten t Security Agreement, dated August 20, 2013, made b y Wellstat Vaccines LLC in favor of PDL BioPharma, In c., ( v ) the Patent Security Agreement, dated August 20, 2013, made by Wellstat Ophthalmics LLC in favor of PDL BioPharma, Inc., ( vi ) the Patent Security Agree ment, dated August 20, 2013, made by Hyperion Catalysis I nternational, ( vii ) the Patent Security Agreement, dated August 20, 2013, made by Wellstat Schedule A - 4 Biologics LLC, ( viii ) the Patent Security Agreement, dated August 20, 2013, made by Wellstat ImmunoTherapeutics, LLC in favor of PDL BioPharma, Inc., ( ix ) the Trademark Security Agreement, dated August 20, 2013, made by Wellstat Management Compan y, LLC in favor of PDL BioPharma, Inc., ( x ) the Trademark Security Agreement, dated August 20, 2013, made by Wellstat Therapeutics Corporation, ( xi ) t he Trademark Security Agreement, dated August 20, 2013, made by Wellstat Biologics LLC in favor of PDL BioPharma, Inc., and ( xii ) the Patent Security Agre ement, dated August 15, 2013, made by Defined Diagn ostics ( f / k / a Wellstat Diagnostics LLC ) in favor of PDL Bi oPharma, Inc