Legal Opinion
Hall Laboratories, Inc. v. Economics Laboratory, Inc.
District Court, D. Minnesota
Decided May 21, 1947No. Civil Action No. 722PublishedCited by 8 opinions
1Opinion of the Court
DONOVAN, District Judge.
This is a suit for infringement of claim 28 of Hall Patent No. 19,719, hereinafter referred to as 719, and claim 10 of Hall Patent No. 2,035,652, hereinafter referred to as 652. Plaintiff seeks injunctive relief against defendant, together with an accounting.
Defendant denies that it committed acts of infringement, and alleges that said patents, and each of them, are invalid.
Patent 719 consists of a composition for softening hard water. Patent 652 is a dish-washing compound. Title to both patents *684is in plaintiff by assignment, and the products of the claimed inventions…
2Cases cited38 opinions
- Cuno Engineering Corp. v. Automatic Devices Corp.Supreme Court of the United States · 1942
- Hotchkiss v. GreenwoodSupreme Court of the United States · 1851
- Mast, Foos & Co. v. Stover Manufacturing Co.Supreme Court of the United States · 1900
- Sinclair & Carroll Co. v. Interchemical Corp.Supreme Court of the United States · 1945
- General Electric Co. v. Wabash Appliance Corp.Supreme Court of the United States · 1938
33 more not listed; retrieve them via the Exa API.
3Cited by8 opinions
- Hall Laboratories, Inc. v. Economics Laboratory, Inc.Court of Appeals for the Eighth Circuit · 1948
- Hall Laboratories, Inc. v. National Aluminate Corp.District Court, D. Delaware · 1951
- Babson Bros. v. Perfection Mfg. Corp.District Court, D. Minnesota · 1949
- Hall Laboratories, Inc. v. National Aluminate Corp.District Court, D. Delaware · 1950
- Hall Laboratories, Incorporated, the Buromin Company, Calgon, Incorporated, and Hagan Corporation v. National Aluminate CorporationCourt of Appeals for the Third Circuit · 1955
3 more not listed; retrieve them via the Exa API.