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Jury Awards Masimo $634 Million Over Apple Watch as ITC Reviews Blood-Oxygen Redesign

The ruling coincides with a regulatory review of the watch’s updated oxygen-sensing design, raising the prospect of new import limits.

Overview

  • A federal jury in California found Apple infringed Masimo patents through the Apple Watch’s workout mode and heart‑rate notification features.
  • Apple said it will appeal, arguing the patent at issue expired in 2022 and relates to older patient‑monitoring technology.
  • The U.S. International Trade Commission launched a review of Apple’s redesigned pulse‑oximetry feature that could result in a renewed import ban.
  • Apple previously disabled blood‑oxygen readings in U.S. models after a 2023 ITC ruling, then reintroduced a redesigned version in August 2025 with customs approval.
  • Masimo called the verdict an important victory for protecting its innovations, as its wider patent and trade‑secret claims against Apple continue across venues.