Legal Opinion
Hap Corporation v. Heyman Manufacturing Company, Heyman Manufacturing Company v. Hap Corporation
Court of Appeals for the First Circuit
Decided January 9, 1963No. 5939_1PublishedCited by 19 opinions
1Opinion of the Court
ALDRICH, Circuit Judge.
Heyman Manufacturing Company sued Hap Corporation for infringement of two patents. Hap counterclaimed for infringement of four others. The district court found for plaintiff on one patent, and for plaintiff in counterclaim on two. 196 F.Supp. 447. On these appeals each party has accepted one defeat, so that now four patents are involved.
Both parties have been engaged for many years in the metal stamping business making, inter alia, blades to be inserted (in pail’s) in plugs by which household electrical cords, or conductors, can be connected with wall receptacles, or…
2Cases cited13 opinions
- The Barbed Wire PatentSupreme Court of the United States · 1892
- Altvater v. FreemanSupreme Court of the United States · 1943
- Hawley Products Company v. United States Trunk Co., Inc.Court of Appeals for the First Circuit · 1958
- Moon v. Cabot Shops, Inc.Court of Appeals for the Ninth Circuit · 1959
- Carter Products, Inc., Joseph G. Spitzer, and Marvin Small v. Colgate-Palmolive CompanyCourt of Appeals for the Fourth Circuit · 1959
8 more not listed; retrieve them via the Exa API.
3Cited by19 opinions
- High Tech Medical Instrumentation, Inc. v. New Image Industries, Inc.Court of Appeals for the Federal Circuit · 1995
- Ormco Corporation v. Align TechnologyCourt of Appeals for the Federal Circuit · 2006
- General Instrument Corporation v. Hughes Aircraft CompanyCourt of Appeals for the First Circuit · 1968
- Lucent Technologies, Inc. v. Newbridge Networks Corp.District Court, D. Delaware · 2001
- State v. BrownTennessee Supreme Court · 1977
14 more not listed; retrieve them via the Exa API.