Mercoid Corp. v. Minneapolis-Honeywell Regulator Co.,
320 U.S. 680 (1944)

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U.S. Supreme Court

Mercoid Corp. v. Minneapolis-Honeywell Regulator Co., 320 U.S. 680 (1944)

Mercoid Corporation v. Minneapolis-Honeywell Regulator Co.

Nos. 58 and 59

Argued December 9, 10, 1943

Decided January 3, 1944.

320 U.S. 680


An owner of a combination patent may not so use it as to control competition in the sale of an unpatented device, even though the unpatented device may be the distinguishing part of the invention, and a court of equity will grant or withhold relief accordingly. Mercoid Corp. v. Mid-Continent Investment Co., ante, p. 320 U. S. 661. P. 320 U. S. 684.

133 F.2d 811 reversed.

Certiorari, 319 U.S. 739, to review a decree which reversed in part and affirmed in part a decree of the District Court, 43 F.Supp. 878, in a patent infringement suit.

Page 320 U. S. 681

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