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Jury Orders Apple to Pay Masimo $634 Million Over Apple Watch Blood‑Oxygen Patent

Apple plans to appeal the verdict covering past sales under an expired Masimo pulse‑oximetry patent.

Overview

  • Jurors found Apple infringed U.S. Patent No. 10,433,776 covering low‑power pulse‑oximetry methods used in certain Apple Watch models.
  • The verdict determined that Apple integrated the capabilities into more than 43 million devices and awarded $634 million in damages.
  • The jury concluded some Apple Watch models qualify as a legal 'patient monitor,' a definition central to Masimo’s claims.
  • Apple said most other Masimo assertions were ruled invalid, noted the patent expired in 2022, and confirmed it will appeal the decision.
  • The ruling lands as related proceedings continue, including an ITC review of Apple’s 2025 redesign that shifts some processing to a paired iPhone after CBP initially cleared imports.