Apple's $634 Million Apple Watch Patent Bill Just Got Even Bigger

Apple's $634 million patent loss to medical technology company Masimo has just gotten even bigger, after a federal judge ordered Apple to pay an additional $184 million in interest on what it owes (via Bloomberg Law). The ruling takes Apple's bill to around $818 million, but that doesn't include any post-judgment interest continuing to accrue until the judgment is paid. Judge James Selna rejected Apple's argument that adding prejudgment interest would constitute a windfall for Masimo, citing U.S. Supreme Court guidance that "interest from the time that the royalty payments would have been received merely serves to make the patent owner whole." Put another way, Masimo is being compensated for as long as it was deprived of royalty payments that it theoretically would have received during the infringement period. It didn't all go Masimo's way, though. Selna also declined Masimo's request to calculate it at a 7 percent rate, which would have put Apple's interest bill at $243 million. Instead, the court used Masimo's own borrowing rate, compounding annually from when the infringement began. U.S. import ban on certain Apple Watch models and resulted in Apple disabling blood oxygen functionality on affected newly sold models. Apple in 2025 introduced a redesigned version of the feature. infringed Masimo's patent and awarded the company $634 million. Related Roundup: Apple Watch 12 Tags: Apple Lawsuits, Masimo Buyer's Guide: Apple Watch (Buy Now) Related Forum: Apple Watch This article, "Apple's $634 Million Apple Watch Patent Bill Just Got Even Bigger" first appeared on MacRumors.com Discuss this article in our forums

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