Home/S.D. New York/Vance v. Campbell

Vance v. Campbell

28 F. Cas. 956
District Court, S.D. New York·Decided July 1, 1868·Published

Opinion

Patents—Utility—Estoppel by Use.

The use by a defendant of the plaintiff’s invention, or something substantially like it, es-tops him denying the utility of such invention. The use of the thing patented implies that the party thought it of some utility.

[Cited in Law’s Pat. Dig. 281, to the point stated above. Nowhere more fully reported; opinion not now accessible.]

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Vance v. Campbell, 28 F. Cas. 956 (S.D.N.Y. 1868).

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