Legal Opinion
Mercoid Corp. v. Milwaukee Gas Specialty Co.
District Court, E.D. Wisconsin
Decided June 13, 1940No. 5293PublishedCited by 4 opinions
1Opinion of the Court
DUFFY, District Judge.
Defendant was the owner of the original Leins Patent No. 1,958,482, issued May 15, 1934, covering a magnetic switch. The plaintiff is the manufacturer of a thermostatically actuated, magnetically operated electric switch, sold under the trade-mark “Sensatherm.” On March 16, 1938, the defendant wrote to the plaintiff that the Mercoid catalogue sheets of August, 1935, show a Mercoid “Sensatherm” which employs Mercoid Switch No. 9-81, and was an infringement of Leins Patent No. 1,958,482, and that unless the manufacture of same was discontinued, suit would be commenced. On…
2Cases cited9 opinions
- Topliff v. TopliffSupreme Court of the United States · 1892
- Motion Picture Patents Co. v. Universal Film Manufacturing Co.Supreme Court of the United States · 1917
- Carnegie Steel Co. v. Cambria Iron Co.Supreme Court of the United States · 1902
- Mahn v. HarwoodSupreme Court of the United States · 1884
- American Fruit Growers, Inc. v. Brogdex Co.Supreme Court of the United States · 1931
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3Cited by4 opinions
- In re RogoffCourt of Customs and Patent Appeals · 1958
- Matter of the Application of Julian RogoffCourt of Customs and Patent Appeals · 1958
- Application of Benjamin J. Chromy and Philip H. AllenCourt of Customs and Patent Appeals · 1963
- Mercoid Corp. v. Milwaukee Gas Specialty Co.Court of Appeals for the Seventh Circuit · 1941