147 Iowa 180 | Iowa | 1909
The plaintiff alleges: That he devised a rear conveyor to be attached to the Dowden potato diggers, and orally agreed to permit the Dowden Manufacturing Company to use his model of said rear conveyor in manufacturing the same; that in consideration therefor it was agreed that said manufacturing company should make rear conveyors of said type, and pay the plaintiff seventy-five cents for each rear conveyor it made and sold; that the manufacturing company accepted said model, and thereafter made rear conveyors of said type, and voluntarily paid the plaintiff for each one made and sold during 1900, 1901, and 1902, and that plaintiff obtained a judgment against the defendant for the conveyors made from March 1, 1903, to March 1, 1904, and that the defendant paid said judgment, and that said judgment is a conclusive adjudication of the present action. In its answer the defendant denies the contract alleged in the petition, denies that the use of the model was a part of the consideration for the contract it did make, and denies that the former suit involved only a contract for the use of said model, or that said judgment operated as an adjudication of the case at bar. The defendant affirmatively alleges: That, when the plaintiff constructed said model, both parties supposed his device was new and embodied invention; that thereafter the plaintiff applied for and received a patent thereon; that, after said patent was issued to the plaintiff, both parties believing said patent tó be valid, and that said device embodied invention, agreed that the defendant should make rear conveyors of «aid patented
There can be no serious doubt as to the real contract made by the parties. There is no claim that any contract was entered into before the patent was issued to the appellant. The patent was believed to be valid by both parties, and, relying upon its validity and the protection of the defendant thereunder, they entered into an agreement whereby the defendant was to pay a royalty of seventy-five cents for each conveyor made and sold by the company. The company paid all royalties due up to March 1, 1904, and shortly thereafter repudiated the contract and notified the plaintiff that it would no longer be bound thereby, or pay further royalties. This repudiation, as we understand the record, was made at a time when no royalties had been earned that were not paid.
We are also inclined to the view that, when the plaintiff brought an action for the infringement of the patent, he elected to treat the license as at an end, and to rely upon his rights against the defendant as an infringer; but we need not determine the question definitely, and do not do so.
The judgment of the district court is right, and it is affirmed.