A California jury has ordered Apple to pay medical technology company Masimo $634 million in a closely watched patent fight over Apple Watch blood oxygen features, a verdict that cuts to the heart of ...

Apple said the single patent at issue in the case expired in 2022 “and is specific to historic patient monitoring technology ...

A California federal jury sided with the Irvine-based medical device maker, finding that Apple infringed on Masimo's patented technology.

Apple said it plans to appeal the verdict, which could delay Masimo’s collection of the damages by as much as two years, one ...

Amid its multi-front legal battle with Apple over its smartwatch’s blood oxygen sensors, Masimo has claimed new ...

In the latest chapter of the legal war between Apple and Masimo, a federal jury has ordered the former to pay $634 million in ...

Apple has suffered a major defeat in its long-term legal dispute with the medtech firm Masimo and has been ordered to pay ...

A federal jury has ruled in favor of Masimo, finding that the Apple Watch infringed on the company’s pulse-oximetry patent ...

Apple faces a new US International Trade Commission investigation over its redesigned blood oxygen feature, potentially ...

Apple has been ordered to pay $634 million to medical device maker Masimo after a federal jury in California concluded that features built into the Apple Watch infringed on one of Masimo’s ...

A federal jury in California sided with medical tech company Masimo in its suit alleging that the Apple Watch infringed on its patent covering low-power pulse oximeter features. The victory hinged on ...

On Nov. 14, 2025, 4D Advisors, LLC disclosed in a regulatory filing that it sold out its entire position in Masimo ( MASI 0.92%). The sale was valued at $7.57 million.