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ARTICLE · 22 OCTOBER 2021

Patent Case Summaries | Week Ending October 15, 2021

A weekly summary of the precedential patent-related opinions issued by the Court of Appeals for the Federal Circuit and the opinions designated precedential or informative by the Patent Trial and Appeal Board.

United StatesIntellectual Property

A weekly summary of the precedential patent-related opinions issued by the Court of Appeals for the Federal Circuit and the opinions designated precedential or informative by the Patent Trial and Appeal Board.


Energy Heating LLC, et al. v. Heat On-The-Fly, LLC, et al., No. 2020-2038 (Fed. Cir. (D.N.D.) Oct. 14, 2021). Opinion by Prost, joined by Moore and Stoll.

In an earlier appeal, the Federal Circuit affirmed a judgment that a patent owned by Heat On-The-Fly (HOTF) was unenforceable due to inequitable conduct. The Federal Circuit also vacated the district court's denial of attorneys' fees under 35 U.S.C. § 285 and remanded. On remand, the district court found the case to be exceptional under § 285 and awarded attorneys' fees. HOTF then filed this appeal, challenging only the district court's exceptionality determination.

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