Legal Opinion
Kay Patents Corp. v. Martin Supply Co., Inc.
Court of Appeals for the Fourth Circuit
Decided February 19, 1953No. 6531_1PublishedCited by 16 opinions
1Opinion of the Court
DOBIE, Circuit Judge.
This is a civil action for patent infringement with the standard defenses of invalidity of the patents and non-infringement. The patents in suit, originally granted to Eugene Kulka, were assigned to plaintiff on October 27, 1950. The claims in issue are as follows:
Number Filing Date Issue Date Claims in Issue
2,464,643 April 5, 1945 March 15, 1949 1-5, Inclusive
2.495.196 December 18, 1948 January 17, 1950 6
The District Court held that both patents were invalid for lack of invention and that neither patent was infringed by the accused devices. Plaintiff has appealed to us…
2Cases cited10 opinions
- Great Atlantic & Pacific Tea Co. v. Supermarket Equipment Corp.Supreme Court of the United States · 1951
- Lincoln Engineering Co. v. Stewart-Warner Corp.Supreme Court of the United States · 1938
- Concrete Appliances Co. v. GomerySupreme Court of the United States · 1925
- Toledo Pressed Steel Co. v. Standard Parts, Inc.Supreme Court of the United States · 1939
- Imperial Bottle Cap & Machine Co. v. Crown Cork & Seal Co.Court of Appeals for the Fourth Circuit · 1905
5 more not listed; retrieve them via the Exa API.
3Cited by16 opinions
- Entron on Maryland, Inc. v. Jerrold Electronics CorporationCourt of Appeals for the Fourth Circuit · 1961
- Heyl & Patterson, Incorporated, and Cross-Appellee v. McDowell Company, Incorporated, and Norfolk and Western Railway Company, and Cross-AppellantsCourt of Appeals for the Fourth Circuit · 1963
- Interdent Corp. v. United StatesUnited States Court of Claims · 1976
- B. F. Goodrich Co. v. United States Rubber Co.District Court, D. Maryland · 1956
- Johnson & Johnson v. Carolina Lee Knitting Co.Court of Appeals for the Fourth Circuit · 1958
11 more not listed; retrieve them via the Exa API.