by Tim Hardwick
Medical technology company Masimo on Wednesday filed a lawsuit against U.S. Customs and Border Protection in which it challenged the agency’s decision to allow Apple to restore blood oxygen monitoring to its Apple Watch models (via Bloomberg Law).
In a complaint filed Wednesday in the US District Court for the District of Columbia, Masimo said that Customs acted unlawfully when it ruled on August 1 that Apple can import watches with pulse oximetry technology – a reversal of the agency’s decision from last year – without notifying Masimo. Masimo said it only discovered the ruling on August 14, when Apple publicly announced it would be reintroducing the pulse oximetry functionality through a software update.
The medical device maker claims Customs and Border Protection exceeded its authority when it issued the ruling permitting Apple’s redesigned approach. Apple’s workaround offloads blood oxygen calculations from the Apple Watch to a paired iPhone, where it performs similar functionality to what the ITC originally judged to have infringed Masimo’s patents.
Masimo is seeking a temporary restraining order and preliminary injunction to block the Customs decision. “CBP’s function is to enforce ITC exclusion orders, not to create loopholes that render them ineffective,” Masimo said.
The dispute originates from an International Trade Commission ruling in December 2023 that found Apple’s blood oxygen sensors infringed Masimo’s patents, leading to an import ban on Apple Watch Series 9 and Ultra 2 models that have the feature enabled.
Apple paused sales in the U.S. for several days before resuming them on January 18, 2024. The Series 9 and Ultra 2 models then went back on the market without blood oxygen monitoring, up until Apple’s release of iOS 18.6.1 and watchOS 11.6.1 last week, which shifted the feature’s calculations to paired iPhones.
Popular Stories
Apple Working on All-New Operating System
Saturday August 16, 2025 6:45 am PDT by Joe Rossignol
Apple is developing an all-new operating system codenamed “Charismatic,” according to Bloomberg’s Mark Gurman. Apple smart home hub concept This is likely Apple’s long-rumored “homeOS” operating system. In a report this week, Gurman said both Apple’s rumored smart home hub in 2026 and tabletop robot in 2027 will run the new operating system. He said the software platform will blend…
Here’s Everything New in iOS 26 Beta 7
The seventh developer beta of iOS 26 is now available. While we are now in the later stages of the iOS 26 beta cycle, there are still some changes. Below, we outline everything new that we have found in iOS 26 beta 7 so far. Redesigned Blood Oxygen Feature The seventh developer betas of iOS 26 and watchOS 26 include a redesigned Blood Oxygen feature on Apple Watch Series 9, Apple Watch …
Apple Releases New Beta Firmware for AirPods Pro 2 and AirPods 4
Tuesday August 19, 2025 11:25 am PDT by Juli Clover
Apple today provided developers with updated beta firmware for the AirPods Pro 2 and AirPods 4, allowing them to test the new AirPods features in iOS 26, iPadOS 26, and macOS Tahoe. The firmware is only available to developers at the current time, and a device running iOS 26, iPadOS 26, or macOS 26 is required to install the update. The firmware has a build number of 8A5343a, up from 8A5324b. …
iOS 18.6.2 Update Coming Soon for iPhones
Apple’s software engineers are testing iOS 18.6.2, according to the MacRumors visitor logs, which have been a reliable indicator of upcoming iOS versions. Yesterday, an anonymous source with a proven track record said iOS 18.6.2 was incoming, but the update was not present in our logs at that time. Last year, the same anonymous source claimed that iOS 17.5.2 was in the pipeline, but Apple …
No iPhone 18 in 2026, Another Report Claims
Apple is expected to delay the launch of its base iPhone 18 model until spring 2027, marking a major shift in the company’s long-established release cycle, according to South Korea’s ETNews. The report claims that Apple has informed some of its suppliers that the iPhone 18 will not be part of the September 2026 iPhone lineup. Instead, the company will unveil only higher-end models in the…
Apple Watch Ultra 3 Just Weeks Away: Eight Reasons to Upgrade
Wednesday August 20, 2025 6:44 am PDT by Tim Hardwick
We’re only weeks away from Apple’s annual iPhone event – rumored to take place on September 9 – and along with the new iPhone 17 series, we’re going to get a new version of the Apple Watch Ultra for the first time since 2023. By the time the Ultra 3 is unveiled, it will have been two years since the previous model arrived. The intervening period has left plenty of room for enhancements,…
Apple Rumored to Launch ‘TechWoven’ Cases for iPhone 17 With ‘Crossbody Strap’ Option
Wednesday August 20, 2025 8:21 am PDT by Joe Rossignol
Apple is planning to launch a new “TechWoven” line of cases for the iPhone 17 series, according to a leaker known as “Majin Bu.” Two years ago, Apple stopped selling leather iPhone cases, as part of the company’s efforts to reduce its carbon emissions. As an alternative, Apple introduced a new “FineWoven” line of fabric iPhone cases made from 68% post-consumer recycled content, but they were …
iPhone Driver’s Licenses in Apple Wallet Now Available in 10 U.S. States
Wednesday August 20, 2025 12:00 pm PDT by Joe Rossignol
In select U.S. states, residents can add their driver’s license or state ID to the Wallet app on the iPhone and Apple Watch, providing a convenient and contactless way to display proof of identity or age at select airports and businesses, and in select apps. This week, Apple announced the 10th U.S. state that has implemented the feature: Montana. Below, we have recapped key details about…
