City of New York v. Ransom - 64 U.S. 487 (1859)
U.S. Supreme Court
City of New York v. Ransom, 64 U.S. 23 How. 487 487 (1859)
City of New York v. Ransom
64 U.S. (23 How.) 487
In an action for damages for the infringement of a patent right, the plaintiff must furnish some data by which the jury may estimate the actual damage. If he rests his case after merely proving an infringement of his patent, he may be entitled to nominal damages, but no more.
The case is stated in the opinion of the Court.