General Motors Corp. v. Leishman

McCORMICK, Chief Judge.

■ This action is for a declaratory • judgment. The, relief the plaintiff seeks is. a judicial determination that certain radio tuning devices' manufactured and sold by plaintiff do not infringe Claims 7 to 11, inclusive, of United States Reissue Letters Patent No. 20,827 applied for -by- defendant May 23, 1938, and granted to him August 16, 1938, and also that such patent claims are invalid. Issue was joined by defendant’s- answer, and his counterclaim whereby he denied the allegations of plaintiff’s complaint and affirmatively alleged validity of the patent claims in…