This is an appeal from an order of the District Court for the District of Delaware enjoining National Electric Products Corporation from proceeding with its cause of action in the District Court for the Eastern District of Michigan against Sears, Roebuck & Company, Inc. The better to understand the present controversy it will be helpful to recapitulate some of the facts which gave rise to our prior decision in the case, 3 Cir., 1942,
Triangle commenced an action in the District Court for the District of Delaware seeking a declaratory judgment of invalidity with respect to eleven patents owned by National which National claimed had been infringed by Triangle. While this action was pending National filed a patent infringement suit in the District Court for the Eastern District of Michigan charging Triangle with having infringed ten of the National patents by manufacture, sale and use and charging Sears, Roebuck & Company, Inc. with having infringed by reselling articles manufactured in violation of six of the National patents. All of the enumerated patents were already involved in the declaratory judgment suit. The Delaware district court denied Triangle’s petition for an order restraining National from prosecuting the patent infringement suit so as to await an adjudication in the declaratory judgment suit. Upon appeal this court reversed and held that it was the duty of the Delaware Court to enjoin National from proceeding with the cause'
*47
of action stated in the Michigan suit against Triangle until after the declaratory judgment action had been decided. Triangle Conduit & Cable Co., Inc., v. National Elec. P. Corp., 3 Cir. 1942,
The question before us in that case was whether under the circumstances there disclosed the United States district court which first obtained jurisdiction of the parties and issues should enjoin the further prosecution of proceedings involving the same parties and issues begun thereafter in another United States district court. We held that it should, under the rule which we had previously enunciated in Crosley Corporation v. Hazeltine Corporation,
We think that the injunction against the prosecution of the severed cause of action against Sears should not have issued. It must be remembered that the duty of a United States district court to enjoin further prosecution of a proceeding later instituted in another United States district court arises only if the controversy in each court involves the same issues and the same parties. Crosley Corporation v. Hazeltine Corporation, supra. It is true that the validity and infringement of the same six patents are at issue in both courts. The parties, however, are not the same. In the Delaware district court the litigants are National, the owner of the patents and Triangle, the alleged infringing manufacturer. In the Michigan district court the litigants are National, the owner of the patents, and Sears, a retail dealer whose tort is alleged to be the resale
*48
of products manufactured in infringement of the National patents. It will not do to say that the suit against Sears is in reality a suit against Triangle. It is well settled that a patent owner has a cause of action, separate and independent from that against an infringing manufacturer, to recover profits and damages and to restrain one who resells a product which he purchased from an infringing manufacturer. Birdsell v. Shaliol, 1884,
It is only if a suit against the manufacturer results in a final judgment in its favor that the manufacturer may restrain suits against its customers for reselling the same product. Kessler v. Eldred, 1907,
It is important to note that the action against Sears is to recover for profits and damages to which National claims to be entitled by reason of Sears’ resale of wire and cable products which infringed National’s patents, whether those products were manufactured by Triangle or others. Although National stipulated that it would confine its evidence of infringement to wire and cable of the types sold by Triangle to Sears the scope of the relief sought is broad enough to include all wire and cable products sold by Sears having the construction held to be an infringement of National’s patents, whether purchased by Sears from Triangle or from some other manufacturer.
The Delaware district court is called upon to determine in the declaratory suit whether Triangle infringed the patents by manufacture, sale and use of certain wire and cable products. The Michigan district court is called upon to determine in the severed action against Sears whether to restrain Sears from reselling wire and cable products of the type manufactured by Triangle and to what if any profits and damages National is entitled by reason of such sales. Neither the causes of action nor the parties are the same. It follows that unless and until final judgment in-favor of Triangle is entered in the Delaware suit the district court of Delaware ought not to restrain the further prosecution of the severed action brought by National against Sears in the district court of Michigan.
The order of the district court is reversed.
