Legal Opinion
Envirotech Corporation v. Al George, Incorporated and Monosep, Inc.
Court of Appeals for the Federal Circuit
Decided March 19, 1984No. Appeal 83-1107PublishedCited by 235 opinions
1Opinion of the Court
DAVIS, Circuit Judge.
Envirotech Corporation (Envirotech) appeals from a judgment, after a jury trial, of the United States District Court for the Western District of Louisiana holding that claims 1, 14 and 15 of its U.S. Patent 4,110,210 (’210) (“Dispersed Gas Flotation Process”) and claims 1, 10, 11 and 12 of its U.S. Patent 4,226,706 ('706) (“Dispersed Air Flotation Machine”) are invalid and not infringed by appellees A1 George, Incorporated and Monosep, Inc. (Monosep). We affirm in part, and vacate and remand in part.
I
Background
A. The General Technology
The Envirotech patents involve…
2Cases cited24 opinions
- Graham v. John Deere Co. of Kansas CitySupreme Court of the United States · 1966
- Graver Tank & Mfg. Co. v. Linde Air Products Co.Supreme Court of the United States · 1950
- American Hoist & Derrick Company, Cross-Appellee v. Sowa & Sons, Inc., Cross-AppellantCourt of Appeals for the Federal Circuit · 1984
- Autogiro Company of America v. The United StatesUnited States Court of Claims · 1967
- Ssih Equipment S.A. v. United States International Trade Commission and Stewart-Warner CorporationCourt of Appeals for the Federal Circuit · 1983
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3Cited by235 opinions
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- Sri International v. Matsushita Electric Corporation of America and Matsushita Electric Industrial Co., Ltd.Court of Appeals for the Federal Circuit · 1985
- Johnson Worldwide Associates, Inc. v. Zebco Corporation and Brunswick CorporationCourt of Appeals for the Federal Circuit · 1999
- Smithkline Diagnostics, Inc. v. Helena Laboratories Corporation, Defendant/cross-AppellantCourt of Appeals for the Federal Circuit · 1989
- Athletic Alternatives, Inc. v. Prince Manufacturing, Inc.Court of Appeals for the Federal Circuit · 1996
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