Legal Opinion
American Lecithin Co. v. Warfield Co.
District Court, N.D. Illinois
Decided November 10, 1941No. Civil Action 1505PublishedCited by 5 opinions
1Opinion of the Court
BARNES, District Judge.
The plaintiff, American Lecithin Company, as owner of Working Patent No. 1,- 781,672, for "chocolate material and method of making same,” charged infringement of said patent by the defendant, The War-field Company, and sought an injunction and accounting. The defendant denied the infringement and charged that the patent is invalid, and in a counter-claim prayed that the patent be adjudged invalid and that the defendant does not infringe any valid claim thereof.
An earlier case between the same parties, charging infringement of the same patent, resulted in a finding and…
2Cases cited7 opinions
- American Lecithin Co. v. Warfield Co.Court of Appeals for the Seventh Circuit · 1939
- Pittsburgh Iron & Steel Foundries Co. v. Seaman-Sleeth Co.Court of Appeals for the Third Circuit · 1917
- McKee v. Graton & Knight Co.Court of Appeals for the Fourth Circuit · 1937
- J. C. Ferguson Mfg. Works, Inc. v. American Lecithin Co.Court of Appeals for the First Circuit · 1938
- Potter v. MayoSupreme Court of the United States · 1939
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3Cited by5 opinions
- Hartford-Empire Co. v. United StatesSupreme Court of the United States · 1945
- Sylvania Industrial Corporation v. Visking CorporationCourt of Appeals for the Fourth Circuit · 1943
- American Lecithin Co. v. Warfield Co.Court of Appeals for the Seventh Circuit · 1942
- Metals Disintegrating Co. v. Reynolds Metals Co.District Court, D. Delaware · 1951
- Hartford-Empire Co. v. United StatesSupreme Court of the United States · 1945