A federal judge has entered final judgment against Apple, ordering the tech giant to pay health tech company Masimo $634.3 million for infringing a patent tied to Apple Watch health-monitoring technology.
The July 20 judgment, issued in the U.S. District Court for the Central District of California by Judge James Selna, formalizes a November 2025 jury verdict finding Apple infringed Masimo’s patent claims. Mr. Selna ruled the infringement was not willful and upheld the patent’s validity, according to court records reviewed by Becker’s.
The lawsuit, filed in January 2020, is one front in a multiyear legal fight between Masimo and Apple over pulse-oximetry technology that has also played out at the International Trade Commission.
An Apple spokesperson pointed Becker’s to the company’s statement after the November verdict: “We disagree with this decision, which we believe is contrary to the facts. Masimo is a medical device company that does not sell any products to consumers. Over the past six years they have sued Apple in multiple courts and asserted over 25 patents, the majority of which have been found to be invalid. The single patent in this case expired in 2022, and is specific to historic patient monitoring technology from decades ago. We plan to appeal.”
Editor’s note: Becker’s reached out to Masimo for comment and will update the story if the company responds.
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