definiens: means any composition of matter or article of manufacture, including without limitation any diagnostic, prophy lactic or therapeutic or product, which ( a ) contains a Licensed Immunoglobul in ; or ( b ) was discovered or created by or arose directly out of use of Licensed Antibody Phage Display Materials or the conduct of Antibody Phage Display by CAT or a CAT Collaborator ; or ( c ) is sold by or on behalf of CAT or a CAT Coll aborator under conditions which, if unlicensed, would constitute infringement of one or more Valid Claims within the XOMA Patent Rights . For the avoidance of doubt, any composition of matter or article of manufacture arising out of CAT 's practice of cell - free ribosome display or yeast display is not included i n the definition of Product but only to the extent such practice or the develop ment or manufacture of such composition of matter or article of manufacture doe s -7- not include the use of any Licensed Antibody Phage Display Materials or the infringement of any Valid Claim of any XOMA Patent Rights