Legal Opinion
National Tube Co. v. Steel & Tubes, Inc.
Court of Appeals for the Third Circuit
Decided May 6, 1937No. 5873PublishedCited by 11 opinions
1Opinion of the Court
DAVIS, Circuit Judge.
This is an appeal from a decree of the District Court in which it was determined that the Johnston “method” patent No. 1,388,434, the Johnston “product” patent, No. 1,435,306, and the Belmont patent, No. 1,611,875, were valid; that the defendant-appellant had infringed claims 1, 2, 4, 5, 10, 14, 17, and 19 of the Johnston method patent, claims 3, 5, 6, and 9 of the Johnston product patent, and claims 1, 2, 3, 4, and 6 of the Belmont patent; and that the defendant was liable to the plaintiff for damages.
The two Johnston patents were held to be valid by this court in the…
2Cases cited9 opinions
- The Barbed Wire PatentSupreme Court of the United States · 1892
- Barber v. Otis Motor Sales Co.Court of Appeals for the Second Circuit · 1916
- American Laundry Machinery Co. v. Prosperity Co.Court of Appeals for the Second Circuit · 1924
- Elyria Iron & Steel Co. v. Mohegan Tube Co.Court of Appeals for the Second Circuit · 1925
- Wirebounds Patents Co. v. Saranac Automatic MacHine Corp.Court of Appeals for the Sixth Circuit · 1933
4 more not listed; retrieve them via the Exa API.
3Cited by11 opinions
- Robert C. Watson, Commissioner of Patents v. Thomas J. AllenCourt of Appeals for the D.C. Circuit · 1958
- Helen Russell Pierce, of the Last Will and Testament of George Washington Pierce, Deceased v. Allen B. Du Mont Laboratories, IncCourt of Appeals for the Third Circuit · 1961
- Piet v. United StatesDistrict Court, S.D. California · 1959
- Sperry Rand Corp. v. Bell Telephone Laboratories, Inc.District Court, S.D. New York · 1962
- Tampax, Inc. v. Personal Products CorporationDistrict Court, E.D. New York · 1941
6 more not listed; retrieve them via the Exa API.