Legal Opinion
General Electric Co. v. De Forest Radio Co.
District Court, D. Delaware
Decided January 3, 1928No. Nos. 589, 598PublishedCited by 4 opinions
1Opinion of the Court
MORRIS, District Judge.
These two suits, of General Electric Company against De Forest Radio Company, were tried together. In the first suit all the claims of patent No. 1,558,436, granted to Irving Langmuir, assignor to the plaintiff, October 20, 1929, for “electrical discharge apparatus and process of preparing and using the same,” upon an application filed October 16, 1913, and renewed March 14, 1916, are in issue. It is known as the high-vacuum tube patent. Infringement is conceded, if the claims are valid. Validity is denied for want of invention and novelty, and because of prior…
2Cases cited4 opinions
- Potts v. CreagerSupreme Court of the United States · 1895
- Badische Anilin & Soda Fabrik v. KalleCourt of Appeals for the Second Circuit · 1900
- Westinghouse Electric & Mfg. Co. v. De Forest Radio Telephone & Telegraph Co.Court of Appeals for the Third Circuit · 1927
- McCormick Harvesting Mach. Co. v. Minneapolis Harvester WorksU.S. Circuit Court for the District of Minnesota · 1890
3Cited by4 opinions
- United Shoe Machinery Corp. v. Industrial Shoe Machinery Corp.District Court, D. Massachusetts · 1963
- Radio Corp. of America v. Majestic Distributors, Inc.District Court, D. Connecticut · 1934
- (PS) Halajian v. JP Morgan Chase Bank, NADistrict Court, E.D. California · 2025
- Moody v. California Department of Corrections and RehabilitationDistrict Court, S.D. California · 2022