all-claims  rule.Patents.  The  now-abandoned  doctrine  that  a  patent  is  invalid  unless  every

inventor named in the patent made an inventive contribution to every claim in the patent. • Section

116 of the Patent Act now expressly  provides that inventors  may apply for a patent jointly even

though each did not make a contribution to the subject matter of every claim. [Cases: Patents    92.

C.J.S. Patents §§ 126, 134.] [Blacks Law 8th]