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By Jeff Ginsberg and Alexander Ivanovic
January 01, 2025

Federal Circuit: District Courts May Impose Deterrence Sanctions Even After They Had Already Awarded Attorney Fees and Costs Under 35 U.S.C. §285


In PS Prods. Inc. v. Panther Trading Co. Inc., the Federal Circuit considered whether a district court may impose deterrence sanctions under its inherent power when it had already awarded attorney fees and costs under 35 U.S.C. §285. No. 2023-1665, 2024 WL 4996328, at *2 (Fed. Cir. Dec. 6, 2024). The Federal Circuit found that it may.

In this case, PS Products Inc. (PSP) accused Panther Trading Co. Inc. (Panther) of infringing one of PSP’s design patents directed to a long-spiked electrode for a stun device. Id. at *1. After PSP filed the instant suit, Panther sent a Rule 11 letter to PSP stating that: 1) the infringement allegations were facially frivolous because the patented design and accused product were plainly dissimilar; and 2) venue was statutorily improper and the suit should not have been filed in Arkansas. Id. PSP later moved to voluntarily dismiss the case with prejudice, and Panther sent them a letter demanding reimbursement for attorney fees and expenses incurred defending the lawsuit. Id. After PSP failed to respond to that letter, Panther filed a motion for attorney fees and costs under 35 U.S.C. §285 as well as deterrence sanctions under the court’s inherent power. The district court granted both.

On appeal, the Federal Circuit affirmed. In doing so, the court found that there is no reason to treat sanctions under the court’s inherent power differently from sanctions under Rule 11 or expert fees under the court’s inherent power. Id. at *2.

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