Legal Opinion
HENGST SE v. Champion Laboratories, Inc.
District Court, N.D. Illinois
Decided December 10, 2024No. 1:23-cv-00794Unknown
1Opinion
UNITED STATES DISTRICT COURT NORTHERN DISTRICT OF ILLINOIS EASTERN DIVISION HENGST SE, ) ) Plaintiff, ) ) No. 23 C 794 v. ) ) Judge Sara L. Ellis CHAMPION LABORATORIES, LLC, ) ) Defendant. ) OPINION AND ORDER Plaintiff Hengst SE (“Hengst”) filed this lawsuit against Defendant Champion Laboratories, LLC (“Champion”), alleging that Champion infringed on Hengst’s patent for a removable and replaceable oil filter,
U.S. Patent No. 9,023,203
(the “’203 Patent”). After claim construction proceedings here, the Patent Trial and Appeal Board (“PTAB”) has instituted inter partes review (“IPR”) on Hengst’s…
2Cases cited5 opinions
- Landis v. North American Co.Supreme Court of the United States · 1936
- Clinton v. JonesSupreme Court of the United States · 1997
- Procter & Gamble Co. v. Kraft Foods Global, Inc.Court of Appeals for the Federal Circuit · 2008
- Trading Technologies International, Inc. v. BCG Partners, Inc.District Court, N.D. Illinois · 2016
- United States v. DiggsDistrict Court, E.D. Illinois · 2019