Overview

• Masimo filed suit in the U.S. District Court for the District of Columbia seeking a temporary restraining order and preliminary injunction against CBP’s August 1 ruling.
• The complaint says CBP reversed a prior January enforcement position without notice through an ex parte process, violating the Administrative Procedure Act and due process.
• CBP’s decision allowed Apple to restore blood‑oxygen readings by offloading calculations to paired iPhones, which Apple enabled on August 14 via iOS 18.6.1 and watchOS 11.6.1.
• Masimo argues Customs exceeded its authority and effectively nullified the ITC’s limited exclusion order, and it asks the court to reinstate the requirement that the functionality remain disabled on imports.
• Apple’s appeal of the ITC infringement finding and import ban remains pending at the U.S. Court of Appeals for the Federal Circuit.