definiens: shall mean ( i ) U.S. Patent No . 4,816,567, issued March 28, 1989 from U.S. pate nt application serial no . ( USSN ) 06/483,457, and ( ii ) any claims directed to chimeric antibodies or any m ethod of making or using chimeric antibodies, which claims a re found in any patent(s ) issuing from divisionals, continuations, or continuations - in - part of any appl ication from which U.S. Patent No . 4,816,567 claims priority, ( iii ) any claims directed to chimeric antibodies or any method of making or using chimeric antibodies, which claims are found in any patents that are reissues, reexaminations, or extensions of any of the foregoi ng ( i ) and ( ii ), and ( iv ) foreign counterparts of any of the f oregoing ( i ), ( ii ), or ( iii )