U.S. Court of Appeals for the Fourth Circuit, 1971

Filterite Corporation, a Body Corporate of the State of Maryland v. Tate Engineering, Inc., and the Carborundum Company

U.S. Court of Appeals for the Fourth Circuit · Decided May 27, 1971 · Sobeloff, Winter, Craven

447 F.2d 62; 170 U.S.P.Q. (BNA) 190; 1971 U.S. App. LEXIS 9963 (Federal Reporter, Second Series)

Counsel

Harry John Staas, Washington, D. C., Z. Townsend Parks, Jr., Baltimore, Md., for appellant., William H. Webb, Pittsburgh, Pa., for appellees.

Cases that cite this one

3 later published cases cite this decision.

Ralston Purina Co. v. Far-Mar-Co, Inc. (District Court, D. Kansas 1984)
Pfizer, Inc. v. International Rectifier Corp. (United States District Court for the Central District of California 1980)
Deering Milliken Research Corporation v. Beaunit Corporation (4th Cir. 1976)

This list shows which later cases cite this one. It does not say how they treated it, and no review of that has been done. Not a substitute for Shepard’s or KeyCite — verify before relying.

Opinion

PER CURIAM:

Filterite Corporation, assignee of United States Letters Patent No. 3,356,-226, brought this action alleging infringement of its patent. The District Court, 318 F.Supp. 584, held the patent valid, but not infringed because of differences between the method of construction of the accused filter units and the specifications of the patent claim. Upon careful consideration of the record, the briefs, and oral arguments, we affirm the judgment of the District Court.

Affirmed.

Case-law data current through December 31, 2025. Source: CourtListener bulk data.