2024 brought exciting developments at the Federal Circuit. The court issued its first en banc decision in a patent case in five years in LKQ, which significantly altered the standard for proving obviousness of a design patent. The court also granted an en banc petition in another patent case with EcoFactor, which will address the standard for admissibility of expert testimony on damages based on allegedly comparable licenses.

Turning to the statistics, the number of appeals from the U.S. Patent and Trademark Office (USPTO) dipped dramatically in 2024, while appeals from district court patent cases held steady. Pendency for Patent Trial and Appeal Board (PTAB) appeals increased for the third consecutive year to almost 20 months. The pendency for appeals from the U.S. International Trade Commission (ITC) and district courts also grew.

Appellate results continued to heavily favor appellees, particularly in cases arising out of the ITC and PTAB. Overall, in 2024, in patent cases, the court affirmed 77% of the time, vacated and remanded 14% of the time, and reversed only 7% of the time. While the affirmance rate was higher for ITC and PTAB decisions, the court affirmed district court cases nearly 70% of the time. Additionally, the Federal Circuit issued Rule 36 summary affirmances more than 30% of the time in patent cases. The court issued a precedential opinion less than 30% of the time; the remaining decisions were made via non-precedential opinions.

We have chosen an assortment of cases from 2024. They include the en banc cases discussed above—but they also include cases concerning patent eligibility, claim construction, antisuit injunctions, damages, and the effect of patent term adjustment on obviousness-type double patenting. We cover cases coming from the PTAB, the ITC, and district courts.

The summaries and statistics in this review are the results of a collaborative process. We want to thank our co-authors—Jennifer Meyer Chagnon, Richard Crudo, Kristina Caggiano Kelly, Anna Phillips, Byron Pickard, Trey Powers, and Deirdre Wells. We’d also like to thank Patrick Murray for his contributions to the data and statistics.

We appreciate your interest in this report, and we encourage you to see our firm’s other 2024 year-in-review reports and on-demand webinars, available at sternekessler.com or by request. Please feel free to reach out if you have questions about this report or wish to discuss the future of Federal Circuit appeals.

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