Court of Appeals for the Sixth Circuit June 27, 1977, 76-1096 (John R. Willingham, Star Cutter Company, Joined as v. Norman B. Lawton, and Star Cutter Company, Party)

PHILLIPS, Chief Judge.

The principal issue presented on this interlocutory appeal is whether the owner of a two-thirds undivided interest in a patent can maintain an action for infringement without the voluntary joinder of the co-owner, where the co-owner is joined in the litigation as involuntary party plaintiff pursuant to Fed.R.Civ.P.