delivered the opinion of the court.
This is a bill in equity brought by the appellants, alleging that Healy is the owner of patents for improvements in boxes and machines for making boxes, and that the Healy Box Corporation is the grantee of the exclusive right to make and use the machines and to make, use and sell the boxes containing the patented improvements. The bill next alleges that the defendant is infringing the patents and will continue to do so unless restrained. Then, anticipating a defence, it sets forth a license to the defendant, a breach of its conditions and a termination of *480 the same. It adds that the license contained a stipulation that in case of any suit for infringement the measure of recovery should be the same as the royalty agreed upon for the use of the inventions, and another for the return of the machines let to the defendant while the license was in force. The bill prays for an injunction against making, using or selling the boxes or machines, for an account of profits received by reason of the infringement, for triple the damages measured as above stated, and for the surrender of the machines. The jurisdiction depended upon this being a case arising under the patent laws, and the District Court thinking that it was merely a matter of contract dismissed the bill. In our opinion its decision was wrong.
It may be that the reasoning of
The Fair
v.
Kohler Die & Specialty Co.,
As appears from the statement of it, the plaintiffs’ case arose Under the patent law. It was not affected by *481 the fact that the plaintiffs relied upon a contract as fixing the mode of estimating damages or that they sought a return of patented machines to which if there was no license they were entitled. . These were incidents. The essential features were the allegation of an infringement and prayers for an injunction, an account of profits and triple damages —the characteristic forms of relief granted by the patent law. The damages were grounded on the infringement,- and the contract was relied upon only as furnishing the mode in which they should be ascertained.
Decree reversed.
