Western Battery & Supply Co. v. Hazelett Storage Battery Co.

KENYON, Circuit Judge.

Appellees (herein at times called plaintiffs) brought their respective suits in the District Court of the United States for the Western District of Missouri to restrain appellant (henceforth frequently called defendant) from further infringement of certain letters patent held by plaintiffs, and to obtain an accounting for past infringement. Defendant did not question the validity of the patents sued on, and admitted the doing of acts which, unless authorized, would constitute infringement; but pleaded license and estoppel as affirmative defenses. The two cases wore…