The Federal Circuit’s recent decision in PowerBlock Holdings, Inc. v. iFit, Inc., No. 2024-1177 (Fed. Cir. Aug. 11, 2025), a rare opinion finding challenged claims eligible, offers new guidance on the boundaries of patent eligibility under 35 U.S.C. § 101. While the case centers on selectorized dumbbells—a mechanical invention—the court’s reasoning provides valuable lessons for patent practitioners, particularly those drafting claims for AI and software-based inventions.…