Legal Opinion
Ingersoll-Rand Co. v. Black & Decker Mfg. Co.
Court of Appeals for the Fourth Circuit
Decided November 5, 1951No. 6261_1PublishedCited by 10 opinions
1Opinion of the Court
DOBIE, Circuit Judge.
This is a typical suit for patent infringement. The patent in question is United States Patent No. 2,012,916, August 27, 1935, issued to Robert H. Pott for an impact tool. Black & Decker Manufacturing Company, defendant here, put the accused device, an automatic wrench, upon, the market in 1949. This was done after years of study by defendant’s research department and after an opinion by competent patent attorneys that defendant’s wrench, did not infringe any prior patents. The District Judge, in an elaborate opinion, found the Pott patent invalid for lack of invention…
2Cases cited17 opinions
- Great Atlantic & Pacific Tea Co. v. Supermarket Equipment Corp.Supreme Court of the United States · 1951
- General Electric Co. v. Wabash Appliance Corp.Supreme Court of the United States · 1938
- Reckendorfer v. FaberSupreme Court of the United States · 1876
- United Carbon Co. v. Binney & Smith Co.Supreme Court of the United States · 1942
- Halliburton Oil Well Cementing Co. v. WalkerSupreme Court of the United States · 1946
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3Cited by10 opinions
- Technograph Printed Circuits, Ltd. v. Bendix Aviation Corp.District Court, D. Maryland · 1963
- Carl Otto v. Koppers Company, Inc., a Delaware Corporation, and Wheeling Steel Corporation, a Delaware CorporationCourt of Appeals for the Fourth Circuit · 1957
- B. F. Goodrich Co. v. United States Rubber Co.District Court, D. Maryland · 1956
- The American Monorail Company v. Parks-Cramer CompanyCourt of Appeals for the Fourth Circuit · 1957
- Daniel v. O. & M. Mfg. Co.District Court, S.D. Texas · 1952
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