John Simmons Co. v. Grier Brothers Co.

Background

A New York inventor and his licensee sued a Pennsylvania lamp maker, saying the maker copied a patented acetylene miner’s lamp and also sold lookalike lamps. The district court initially ordered an injunction for unfair competition and later, after hearings, found one reissued patent claim valid and infringed. The appeals court in that circuit reversed the patent finding, and the case in that court was dismissed as to the patent. Meanwhile, a separate suit involving the same patent in another circuit resulted in the Supreme Court’s decision that the reissued claim was valid.

Reasoning

The core question was whether the patent owners could reopen the Pennsylvania case after the Supreme Court’s decision in the other suit. The district court treated the filing to reopen as a request to rehear the case because the earlier decree had been interlocutory (not final). This Court agreed, holding that because the suit was not finally concluded, the district court properly reconsidered the patent issue in light of the Supreme Court’s ruling. The Court found the reissued patent claim valid and that the defendant had infringed, reversing the appeals court’s decision.

Real world impact

The ruling restores the district court’s judgment that the lamp maker copied the patented design and requires further proceedings to fix damages and profits and to enforce a perpetual injunction against continued copying. The decision shows that patent owners may seek rehearing before final decree when a higher court’s decision changes the law, and that lower courts should conform to intervening Supreme Court rulings.