definiens: mean the following pate nts and patent applications known generally as the Cabilly patents and patent applications : ( a ) U.S. Patent No . 4,816,567 and the claims relati ng to chimeric antibodies found in patents or patent applications arising from divisionals, continuations or continuations - in - part of any application from which U.S. Patent No . 4,816,567 claims priority or any substitute applications therefor, any patent issued with respe ct to any such patent application, any reissue, extension or patent term extension of any such patent, and any confirmation patent or registration patent or patent of addition based on any such patent as well as the f oreign counterparts of the foregoing and any and all reissues, reexaminati ons or extensions of the foregoing ( but in any event excluding U.S.S.N. 07/2 05,419 and foreign counterparts thereof ) ( ) and ( b ) any patent issuing based on U.S.S.N. 07/205,41 9 ( a continuation of the application maturing into U.S. Patent No . 4,816,567 ) relating to the coexpression of immunoglobulin chains in recombinan t host cells, as well as the divisionals, continuations or continuations - in- part of such U.S.S.N