Search Supreme Court Cases

GARRETSON V. CLARK, 111 U. S. 120 (1884)

U.S. Supreme Court

Garretson v. Clark, 111 U.S. 120 (1884)

Garretson v. Clark

Argued January 15, 1884

Decided March 24, 1884

111 U.S. 120


When a patent is for an improvement of an existing machine or contrivance, the patentee in a suit for damages for infringement must either show by reliable, tangible proof that the value of the machine or contrivance as a whole is due to the use of his patented invention or he must separate and apportion, by proof of the same character, the part of the defendant's profits which are derivable from the use of it in order to establish a claim for more than nominal damages.

This was a suit in equity for infringement of a patent for an improved mop head. The sole question raised was whether the evidence of damages warranted a judgment for more than nominal damages.

Powered by Justia US Supreme Court Center: GARRETSON V. CLARK, 111 U. S. 120 (1884)

Official Supreme Court caselaw is only found in the print version of the United States Reports. Justia caselaw is provided for general informational purposes only, and may not reflect current legal developments, verdicts or settlements. We make no warranties or guarantees about the accuracy, completeness, or adequacy of the information contained on this site or information linked to from this site. Please check official sources.