Majority
Headnote
1. Sale of Patent—Invalidity of Patent, as Defense to Action for Purchase Price. The vendee of a patent may defend an action for the purchase price (which may consist of royalties) by showing a failure of consideration through the invalidity of the patent.The agreement of April, 1888, was, in its main purpose, an agreement for the sale by the plaintiffs to the defendants of the patent Ho. 367,212, for an improved filter, issued by the United States to one Klein, July 26th, 1887, which had been assigned by the patentee to the plaintiffs. The agreement of the defendants to pay to the plaintiffs a royalty of fifty dollars on each machine which should, be sold by them was the consideration which the plaintiffs were to receive for the sale and assignment of the patent. The contingency which would change the obligation of the defendants from a royalty to a percentage of profits has not happened, and need not be considered. The seventh defense demurred to by the plaintiffs embraces the defense of want of consideration. It alleges that on about the 8tli day of July, 1889, a suit was brought in the United States Circuit Court in Pennsylvania by Simon Uhlmann and Fred Uhlmann, against the Arnholt & Schaefer Brewing Company, for an alleged infringement of a patent issued by the United States to one Stockheim, for a filtering process, February 21st, 1888, of which patent the said Uhlmanns were assignees; that the alleged infringement consisted in the use by the brewing company of one of the filters made under the Klein patent, sold to the company by the defendants; that the defendants on the sale guar- . an teed the company against suits for infringement based upon its use of the Klein machine; that they appeared and defended this suit, which resulted in a decree January 4th, 1893, adjudging that the use of the Klein filter by the brewing company
We think the defense demurred to was on its face a good answer to the action. The plaintiffs not being jaarties to the suit in Pennsylvania are not bound by the judgment rendered therein. But so long as the judgment stands, it is conclusive as between the defendants and the owner of the Stockheim patent, that the Klein patent was an infringement of the Stockheim patent. The defendants can neither manufacture nor sell the Klein machine, and they are liable to the owner of the Stockheim patent for damages for all machines sold by them, whether before or after the commencement of the suit in the United States court. If, therefore, it should also be established as against the plaintiffs on the trial of this present action that the Klein patent infringes the Stockheim patent, it will follow that there was no consideration for the promise of the defendants. The doctrine that the purchaser of a patent may defend an action for the purchase price, if the patent is void, has been recognized in many cases. (Marston v. Swett, 66 N. Y. 212 , and cases cited; S. O., 82 id. 526.) This is especially true where a decree has been found against the purchaser, rendered by a court of competent jurisdiction, adjudging the patent to be an infringement, thereby depriving him of any beneficial use thereof, and subjecting him to account to the owners of another patent for damages upon all sales hy him of the infringing machine, whenever they may have been made. It is insisted, however,
The point that the defense involved an'inquiry by a state court as to the validity of a patent, and whether as between two patents one was an infringement of the other, which a state court has no jurisdiction to consider or determine, is not new. The issue made was that the agreement sued upon
It was not necessary for the defendants to reassign the patent as a condition of interposing the defense. If they were seeking some affirmative relief, as a rescission of the agreement, or to recover money paid under the agreement, an offer to return the patent might be a condition precedent.
We think the demurrer was properly overruled, aud the order should, therefore, be affirmed.
All concur.
Order affirmed.
Cases cited
- Herzog v. Heyman 8 Misc. Rep. 27 p. 587
- Hyatt v. Ingalls 124 N. Y. 93 p. 588, p. 589, p. 592
- Saltus v. Belford Co. 133 N. Y. 499 p. 588
- Marston v. Swett 66 N. Y. 206 p. 588
- Marston v. Swett 82 N. Y. 526 p. 588, p. 589
- Maitland v. Drew 14 Misc. Rep. 60 p. 588
- Littlefield v. Perry 21 Wall. 205 p. 588
- Stone v. State 138 N. Y. 124 p. 588
- Collins v. Hydorn 135 N. Y. 320 p. 588
- Hartell v. Tilghman 99 U. S. 547 p. 588, p. 589
- Lovejoy v. Murray 3 Wall. 1 p. 588
- Robbins v. Chicago City 4 Wall. 657 p. 588
- Dale Tile Manufacturing Co. v. Hyatt 125 U. S. 46 p. 589
- Hoyt v. United States 51 U. S. 109 p. 589
- Brown v. Shannon 61 U. S. 55 p. 589
- Albright v. Teas 106 U. S. 613 p. 589
- Brown v. Atwell 92 U. S. 327 p. 589