Hann

On July 26, 1930, Edwin Anderson filed his application in the United States Patent Office for letters patent for what is claimed to be a new and useful invention known as “Venetian Blind Bracket.” On October 27, 1931, letters patent No. 1,829,718 were granted to him for the invention. Anderson, by an assignment in writing, sold and assigned to Francis Hann, the plaintiff, all his right, title, and interest in the letters patent. By his bill of complaint in equity, Francis Hann, after making general allegations relating to the value, commercial utility, wide use of the patented article and of its manufacture and sale by him under the letters patent, charges the defendants with infringement by the manufacture, without the plaintiff’s license and consent, of devices embodying the inventions disclosed by the letters patent. The bill also alleges notification of the defendants of the exclusive right of the plaintiff to the patent, gains and profits realized by the defendant from the sale of the infringed article, and seeks injunctive relief and an accounting. The defendants have pleaded the general issue and certain special defenses, to be noted more fully further on in the discussion.…