In a recent installment of its “Behind the Case” Q&A feature, Managing Intellectual Property highlighted Knobbe Martens’ track record of litigation wins on behalf of medical technology innovators Masimo Corporation and Willow Laboratories in multiple patent and trade secret disputes against Apple. The article underscores the firm’s record of success in consequential, high-stakes IP litigation.
In November 2025, Knobbe Martens guided Masimo and Willow to victory in a patent infringement dispute against Apple, where the jury awarded Masimo $634 million in damages. Last month, the court granted Masimo’s motion for pre- and post-judgment interest in the case, bringing the total damages amount owed to Masimo to $818.5 million.
Partner Brian Horne led the 2025 jury trial team, with Brian Claassen and Sheila Swaroop as other trial presenters. Discussing the trial with Managing IP, Claassen attributed the firm’s success to “a team of exceptional attorneys who all believed in the client and the value of its technology.” In addition to Horne, Claassen, and Swaroop, the team representing Masimo and Willow included Steve Jensen, Mark Kachner, Joseph Re, Douglas Wentzel, Perry Oldham, Jared Bunker, Kendall Loebbaka, Adam Powell, Daniel Hughes, Ben Shiroma, Melis Tirhi and Rhett Ramsey.
Horne said the team met challenges throughout the trial by adapting and persevering. “We collaborated on the details, consistently challenged our assumptions, and relied on our proven ability to translate complex technologies and IP issues for a jury,” he added.
Closing out the piece, Claassen reflected on how the firm’s work in this case “encapsulates some of [Knobbe Martens’] strongest qualities when it comes to IP litigation: first, we are extremely adept at crafting and executing multi-venue litigation strategies, both on the plaintiff and [defense] sides. Second, our litigators have deep technical knowledge that allows us to adapt on the fly during trial and break down highly complex technologies for juries. And lastly, we are passionate about protecting and advancing our clients’ innovations.”
Read the full Q&A, “Behind the Case: Knobbe Adds $184m to Masimo’s Record Win Against Apple,” here.
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