Legal Opinion
Bourns v. Edcliff Instruments
District Court, S.D. California
Decided July 15, 1954No. Civ. No. 14764PublishedCited by 1 opinion
1Opinion of the Court
YANKWICH, Chief Judge.
Action for infringement of patent No. 2,515,981, issued to M. E. Bourns on July 18, 1950. The defendants have denied infringement and have attacked the validity of the patent. ' No claim of invention by them is asserted by the defendants. Their challenge of the validity of the patent is based on claimed anticipation.
I
The Validity of the Patent in Suit.
The issues, as narrowed by the proof, concern the validity of the single claim of the patent, which reads:
“An adjustable resistor comprising a base having a groove therein, a shaft reciprocably mounted in said groove, a…
2Cases cited23 opinions
- E. I. Du Pont De Nemours Powder Co. v. MaslandSupreme Court of the United States · 1917
- Permutit Co. v. Graver Corp.Supreme Court of the United States · 1931
- Smith v. Dravo Corp.Court of Appeals for the Seventh Circuit · 1953
- Pagliero v. Wallace China Co., LimitedCourt of Appeals for the Ninth Circuit · 1952
- Universal Oil Products Co. v. Globe Oil & Refining Co.Supreme Court of the United States · 1944
18 more not listed; retrieve them via the Exa API.
3Cited by1 opinion
- Sarkes Tarzian, Inc. v. Audio Devices, Inc.District Court, S.D. California · 1958