Imperial Machine & Foundry Corp. v. United States

This is a suit to recover damages for infringement of the plaintiff’s patents by the defendant. The claim is based upon the purchase and use of machines which infringed these *495patents. There are two questions for present purposes to be passed upon, viz, the validity of the patents, and the infringement thereof by the defendant by purchase and use.

Under the practice of this court the question of the amount of damages was postponed, no evidence to be taken thereon until these two question^ have been disposed of; that is to say, if the court should decide the two questions in the affirmative, the…