Legal Opinion
F. W. Wakefield Brass Co. v. Mitchell Mfg. Co., Inc
Court of Appeals for the Seventh Circuit
Decided September 28, 1951No. 10313_1PublishedCited by 3 opinions
1Opinion of the Court
LINDLEY, Circuit Judge.
Its suit for infringement of Claim 2 of Patent 1,963,218, June 19, 1934, to Wake-field, having resulted in a judgment dismissing the cause, plaintiff prosecutes this appeal. The District Court’s decision, 94 F.Supp. 650, explains the essential facts and principles of law involved. What is said there need not be repeated here.
The trial court determined that the claim is not infringed; that if interpreted as plaintiff construes it, it is invalid and that plaintiff, by virtue of file wrapper estoppel, may not properly assert infringement here. Plaintiff urges that the…
2Cases cited4 opinions
- Great Atlantic & Pacific Tea Co. v. Supermarket Equipment Corp.Supreme Court of the United States · 1951
- Sinclair & Carroll Co. v. Interchemical Corp.Supreme Court of the United States · 1945
- Holland Co. v. American Steel FoundriesCourt of Appeals for the Seventh Circuit · 1951
- F. W. Wakefield Brass Co. v. Mitchell Mfg. Co.District Court, N.D. Illinois · 1950
3Cited by3 opinions
- Director of Revenue, State of Colorado v. United StatesCourt of Appeals for the Tenth Circuit · 1968
- Hamilton Mfg. Co. v. Illinois Surgical Supply Co.Court of Appeals for the Seventh Circuit · 1952
- Silvray Lighting, Inc. v. VersenDistrict Court, D. New Jersey · 1962