U.S. Supreme Court
Rosenwasser v. Spieth, 129 U.S. 47 (1889)
Rosenwasser v. Spieth
Argued December 11-12, 1888
Decided January 14, 1889
129 U.S. 47
The improvement in percolators for which letters patent were granted April 18, 1882, to Nathan Rosenwasser, was anticipated by an apparatus described in Geiger's Handbuch der Pharmacie, published at Stuttgart in 1830.
In equity for an alleged infringement of letters patent. The bill prayed for a discovery and an accounting and the payment of all gains and profits discovered on the accounting, and for injunctions, both interlocutory and final. The answer denied that the plaintiffs invented the patented improvement or that the alleged invention was patentable. The final decree chanroblesvirtualawlibrary
dismissed the bill, from which the plaintiffs appealed. The case is stated in the opinion.