Legal Opinion
American Chain Co., Inc. v. Cox Brass Mfg. Co.
District Court, N.D. Ohio
Decided May 26, 1922No. 652PublishedCited by 3 opinions
1Opinion of the Court
WESTENHAVER, District Judge.
Plaintiff’s bill charges infringement by defendant of United States letters patent No. 1,374,893, issued April 12, 1921, to William J. Pancoast and William J. Grotenhuis, and by them assigned to the plaintiff. Claims 6 to 11, inclusive, only are in issue. The defenses mainly relied on and urged in argument are: (1) Invalidity for want of invention. (2) Invalidity because the patent contains a needless multiplication of nebulous and indefinite claims calculated to mislead and deceive the public. (3) Invalidity because the alleged invention was sole and not joint. If…
2Cases cited9 opinions
- Atlantic Works v. BradySupreme Court of the United States · 1883
- Hollister v. Benedict & Burnham Manufacturing Co.Supreme Court of the United States · 1885
- Railroad Supply Co. v. Elyria Iron & Steel Co.Supreme Court of the United States · 1917
- Boston Pencil Pointer Co. v. Automatic Pencil Sharpener Co.Court of Appeals for the Second Circuit · 1921
- Sparks-Withington Co. v. JayCourt of Appeals for the Sixth Circuit · 1921
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3Cited by3 opinions
- Brodie v. United StatesUnited States Court of Claims · 1926
- Leishman v. Associated Wholesale Electric Co.District Court, S.D. California · 1941
- American Chain Co. v. Cox Brass Mfg. Co.Court of Appeals for the Sixth Circuit · 1924