Legal Opinion
Shaffer v. Rector Well Equipment Co.
Court of Appeals for the Fifth Circuit
Decided May 3, 1946No. 11305PublishedCited by 33 opinions
1Opinion of the Court
WALLER, Circuit Judge.
Appellants brought suit to enjoin alleged infringement of four patents and for an accounting for profits and damages. The defenses interposed were: (1) That plaintiffs’ patents were invalid. (2) That they had not been infringed. (3) That the plaintiffs were equitably estopped by laches from maintaining suit. After the taking of testimony and final hearing on all the issues, the lower Court decided the case solely on the issue of laches and dismissed the complaint.
The cases dealing with the defense of laches in patent infringement actions are many and varied, with the…
2Cases cited10 opinions
- Kelley v. BoettcherCourt of Appeals for the Eighth Circuit · 1898
- Halstead v. GrinnanSupreme Court of the United States · 1894
- France Mfg. Co. v. Jefferson Electric Co.Court of Appeals for the Sixth Circuit · 1939
- Stearns-Roger Mfg. Co. v. BrownCourt of Appeals for the Eighth Circuit · 1902
- Alliance Securities Co. v. De Vilbiss Mfg. Co.Court of Appeals for the Sixth Circuit · 1930
5 more not listed; retrieve them via the Exa API.
3Cited by33 opinions
- SCA Hygiene Products Aktiebolag v. First Quality Baby Products, LLCSupreme Court of the United States · 2017
- Billy K. Watkins v. Northwestern Ohio Tractor Pullers Association, Inc.Court of Appeals for the Sixth Circuit · 1980
- Studiengesellschaft Kohle Mbh, as Trustee for the Max-Planck-Institut Fur Kohlenforschung v. Eastman Kodak CompanyCourt of Appeals for the Fifth Circuit · 1980
- Baker Manufacturing Company v. Whitewater Manufacturing CompanyCourt of Appeals for the Seventh Circuit · 1970
- Potash Co. of America v. International Minerals & Chemical Corp.Court of Appeals for the Tenth Circuit · 1954
28 more not listed; retrieve them via the Exa API.