Tol-O-Matic, Inc. v. Proma Produkt-Und Marketing Gesellschaft m.b.H.

Name: Tol-O-Matic, Inc. v. Proma Produkt-Und Marketing Gesellschaft m.b.H.
Cite: 945 F.2d 1546
Year: 1991
Bluebook cite: Tol-O-Matic, Inc. v. Proma Produkt-Und Marketing Gesellschaft m.b.H., 945 F.2d 1546 (Fed. Cir. 1991).
Author
URL: 945 F.2d 1546
Item Type: case
Summary: Action for infringement of patent for rodless piston cylinder. The jury found that one of the claims was invalid for lack of utility, because the invention of the claim did not work in the way the patentee had argued that it did when distinguishing it from the prior art. The Federal Circuit reversed this judgment.

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