242 F. 941 | 2d Cir. | 1917
This is a suit against the Roto Company and Philip J. Darlington, its president, for infringement of United States letters patent No. 983,032, for turbines, and No. 1,045,134, for rotary motor, duly assigned to the complainant.
The sole question to be determined is whether the defendants are bound by a decree in favor of the complainant in a prior suit instituted by it on the same patents in the District Court of the United States for the Western District of Pennsylvania against one Robertson, a seller of the same motor manufactured by the defendant, the
When the defense is not open or avowed, the estoppel becomes matter of proof. If the plaintiff relies upon it, he must show that the defendant actually did conduct the defense in the prior suit. If the defendant relies on it, he must show not only that he did conduct the defense, but that the plaintiff knew he did. In the present case the Roto Company did not directly avow that it was defending the suit against Robertson, nor authorize him to inform the Elliott Company of that fact. Its intention was to conceal what it was doing. All the same, it was defending the suit. Robertson did inform the Elliott Company of the fact, and the defendant Darlington, president of the Roto Company, did openly participate to some extent. We do not think it was necessary that the defendant should have known that the claimant was aware that it was defending the suit against Robertson to make the estoppel effective. If the decree had been in favor of Robertson, and the Roto Company could have proved that the complainant knew that it had defended that suit, which we have little doubt it could have done, then the decree would have been res adjudicata against the complainant in a subsequent suit.
Decree affirmed.