Legal Opinion
Duo-Flex Corp. v. Building Service Co.
Court of Appeals for the Fifth Circuit
Decided August 22, 1963No. 20080PublishedCited by 12 opinions
1Opinion of the Court
HUTCHESON, Circuit Judge.
These appeals are from the judgment of the district court that all five claims of the Stanley patent,1 a combination patent for the construction of suspended acoustical ceilings, are valid but were not infringed by the defendants.2 The plaintiff, holder of the Stanley patent, appeals from that part of the judgment holding that claims 2, 3, and 4 of the patent were not infringed by the defendants, and the defendants appeal from that part of the judgment holding the patent to be valid. The plaintiff alleged below, in essence, that the defendant Builders Service had…
2Cases cited13 opinions
- Graver Tank & Mfg. Co. v. Linde Air Products Co.Supreme Court of the United States · 1950
- Great Atlantic & Pacific Tea Co. v. Supermarket Equipment Corp.Supreme Court of the United States · 1951
- Diamond Rubber Co. of New York v. Consolidated Rubber Tire Co.Supreme Court of the United States · 1911
- Topliff v. TopliffSupreme Court of the United States · 1892
- Cameron Iron Works, Inc. v. Robert O. Stekoll, D/B/A Speed-O-Valve Co.Court of Appeals for the Fifth Circuit · 1957
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3Cited by12 opinions
- Ling-Temco-Vought, Inc. v. Kollsman Instrument CorporationCourt of Appeals for the Second Circuit · 1967
- Illinois Tool Works, Inc. v. Continental Can CompanyDistrict Court, N.D. Illinois · 1967
- Eastern Rotorcraft Corporation v. The United StatesUnited States Court of Claims · 1968
- Abbott v. Barrentine Manufacturing CompanyDistrict Court, N.D. Mississippi · 1966
- St. Regis Paper Co. v. Winchester Carton Corp.District Court, D. Massachusetts · 1976
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