Legal Opinion
Kaspar Wire Works, Inc. v. Leco Engineering and MacHine Inc.
Court of Appeals for the Fifth Circuit
Decided June 21, 1978No. 76-2001PublishedCited by 326 opinions
1Opinion of the Court
ALVIN B. RUBIN, Circuit Judge:
This patent infringement case, involving a type of latch used on coin-operated newspaper vending machines commonly found on street corners, is the third suit relating to the validity of patented devices embodied in the respective products of two competitors. The trial court held that a consent judgment dismissing a prior suit brought for a declaratory judgment of patent invalidity and non-infringement did not bar or estop the defendants from contesting the validity of the plaintiff’s patent in this suit; it then held the patent invalid for obviousness. Because…
2Cases cited59 opinions
- Graham v. John Deere Co. of Kansas CitySupreme Court of the United States · 1966
- Powell v. McCormackSupreme Court of the United States · 1969
- Blonder-Tongue Laboratories, Inc. v. University of Illinois FoundationSupreme Court of the United States · 1971
- Lawlor v. National Screen Service Corp.Supreme Court of the United States · 1955
- United States v. ITT Continental Baking Co.Supreme Court of the United States · 1975
54 more not listed; retrieve them via the Exa API.
3Cited by326 opinions
- Francine Klingman v. Melvin E. LevinsonCourt of Appeals for the Seventh Circuit · 1987
- Robi v. Five Platters, Inc.Court of Appeals for the Ninth Circuit · 1988
- United States of America and Revenue Agents Clarence H. Isabel and John S. Reid of the Internal Revenue Service v. The El Paso CompanyCourt of Appeals for the Fifth Circuit · 1982
- Clarke v. FrankCourt of Appeals for the Second Circuit · 1992
- St. Paul Mercury Insurance Co., Plaintiff-Counter v. Robert T. Williamson Sonya Williamson Arlone Belaire, Defendants-Counter Claimant-Appellants v. Richard Vale Haynes Best Western of Alexandria, Inc. H. L. Haynes Mrs. H. L. Haynes Best Western International, Inc. American General Fire and Casualty Co. Maryland Casualty Co., Counter Robert T. Williamson Sonya Williamson Arlone Belaire v. Richard Vale, Richard Vale Haynes Best Western of Alexandria Best Western International, Inc. H. L. Haynes H. L. Haynes American General Fire and Casualty Maryland Casualty Co. St. Paul Mercury Insurance Company H.L. & H. Holding Co. St. Paul Mercury Insurance Company v. Robert T. Williamson, Robert T. Williamson Arlone Belaire Sonya J. Williamson, Robert T. Williamson Sonya Williamson Arlone Belaire v. Richard Vale, St. Paul Mercury Insurance Company, St. Paul Mercury Insurance Co. Haynes Best Western of Alexandria, Inc. Best Western International, Inc. H. l.haynes H. L. Haynes, Mrs. H & L Holding Co. American General Insurance Co. Richard S. Vale Maryland Casualty Co. v. Sonya Williamson, Individually and on Behalf of Her Minor Children, Robert T. Williamson, Individually and on Behalf of His Minor Children Lawrence J. SmithCourt of Appeals for the Fifth Circuit · 2000
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