Apple Continues Working to Get Blood Oxygen Sensing Back in U.S. Apple Watches as Next Masimo Trial Begins - MacRumorsOpen MenuShow RoundupsShow Forums menuVisit ForumsOpen Sidebar
Skip to Content

Apple Continues Working to Get Blood Oxygen Sensing Back in U.S. Apple Watches as Next Masimo Trial Begins

Apple and Masimo are back in a California court this week for a bench trial that will see Masimo arguing that Apple illegally poached its employees and stole trade secrets when developing the Apple Watch.

masimo watch freedom
Masimo first filed the trade secret lawsuit against Apple in 2020, and there was a jury trial in April 2023. During that trial, the court threw out more than half of Masimo's trade secret claims, but the judge ultimately declared a mistrial because the jury was not able to come to a final decision. Six of seven jurors sided with Apple, while one Masimo holdout would not change her opinion.

Apple and Masimo were slated to retry the case with another jury, but Masimo abandoned all claims asking for monetary compensation in order to get a bench trial instead. Masimo originally requested $1.85 billion in damages, along with reasonable royalties, lost profits, and a penalty for willful trade secret appropriation.

With the bench trial, Masimo is no longer claiming any monetary damages, but it wants an injunction against the Apple Watch. The bench trial will first determine if there were any trade secret violations, and then the court will consider Masimo's argument for an injunction. It is unclear what injunctive relief Masimo could ask for in this situation, especially as many of the claims in this case have now been thrown out.

During the case, Masimo accused Apple of infringing on 17 patents. After an ITC review, 15 of the 17 patents were invalidated, with two remaining. The patent portion of the trade secret case is on hold.

Note that the Masimo trade secret lawsuit against Apple is separate from both an ITC injunction preventing the sale of Apple Watch models with a blood oxygen sensor and a patent infringement case that Apple filed against Masimo.

Apple is appealing the ITC's Apple Watch injunction, but it has been able to continue selling the Apple Watch by disabling the blood oxygen sensor that allegedly infringes on Masimo's technology. To get the sales ban in the first place, Masimo had to prove that it was using the patents that Apple was infringing, so Masimo rushed to create its own smart watch in 2022, deliberately copying several of Apple's patents.

Masimo's W1 Freedom smart watch was the subject of the patent lawsuit that Apple filed against Masimo, and just last week, a jury decided that Masimo's devices had infringed on Apple Watch patents. Apple says that it only asked for $250 in damages, as the goal of the lawsuit wasn't profit, it was to get Masimo to stop copying the design of the Apple Watch.

The ITC order is the most damaging to Apple because Apple is prevented from selling Apple Watch models with blood oxygen sensing in the United States. Apple believes the appeals court will overturn the ITC's ruling, and the company said this week that it is exploring all possible methods to get blood oxygen sensing back in U.S. Apple Watch models.

Over the last five years, Masimo has been fighting three separate cases with Apple. Masimo did win the ITC ban of the blood oxygen sensing feature, but it ultimately had no material impact on Apple's business because Apple was able to simply disable the feature and continue selling the device. So far, Masimo has not gained much in its legal battle with Apple, and it isn't looking like the trade secret case will go in Masimo's favor.

Popular Stories

apple watch series 6 blood oxygen monitoring 1

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

Tuesday October 6, 2026 6:09 am PDT by
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 ...
Taptic Engine iPhone 6s

Apple Could Owe Even More After $5.7 Billion Patent Verdict

Tuesday October 20, 2026 8:24 pm PDT by
Apple could face additional payments on top of a $5.7 billion patent verdict, with Taction Technology asking a federal judge for more damages, interest, and royalties on future iPhone and Apple Watch sales. The request follows a September jury verdict that Apple's Taptic Engine infringed two Taction patents covering haptic feedback, the technology that produces taps and vibrations in...
Apple MacBook Pro with PROLED XDR Display family lineup feature

Apple Announces OLED MacBook Pro With Touch Display

Wednesday October 28, 2026 10:11 am PDT by
Apple today announced a new high-end MacBook Pro, which is available in 14-inch and 16-inch sizes. The new device has a PROLED XDR display that supports touch gestures, and a glowing rear Apple logo. Pricing on the MacBook Pro starts at $2,899 for the 14-inch model and $3,399 for the 16-inch model. Apple says the MacBook Pro has the "world's best display in a pro laptop." The PROLED...

Top Rated Comments

26 months ago

"Actions speak louder than words."

Masimo has licensed their tech to countless others. Apple is known for going nuclear. We've seen it with how they work with Qualcomm.
The word is that Kiani was asking an overly ambitious licensing fee...by a lot. Like $100 per watch a lot. It's one thing to say "I'm willing to license" it's entirely another thing to have a reasonable conversation.

Apple has won about 90% of court cases on this matter. And yes, Kiani was essentially kicked out. No need for revisionist history here, it's all been well documented.
Score: 11 Votes (Like | Disagree)
JeffNT326 Avatar
26 months ago

So do current US Apple Watch Series 10 devices have the oxygen sensor and it's just software disabled at the moment? Could they enable it via a software update?
This appears to be the case. Tear down videos have confirmed this. Watches sold outside the US have O2 sensors enabled.
Score: 9 Votes (Like | Disagree)
TheWraith Avatar
26 months ago

Joe Kiani wasn't "kicked out." He resigned as CEO.
Right he resigned...just after the board voted to remove him. So sure, if you want that's a way to technically claim you weren't 'kicked out'...but most normal people would call a spade a spade.
Score: 8 Votes (Like | Disagree)
Drs247 Avatar
26 months ago
Probably the only functionality ever to have existed in an  product that's available all over of the word but not in the US. Usually happens the other way around.
Score: 8 Votes (Like | Disagree)
JPack Avatar
26 months ago

Do all the other wearables with similar pulse oximeters somehow not violate Masimo’s patents? Or is this an example of Masimo simply going after the biggest fish? Either way, it’s wild that Apple is stuck shipping a hobbled wearable while all its competitors continue to measure blood oxygen with abandon.
Fitbit (Google), Garmin, Philips, and countless others license from Masimo. It's clear Masimo is willing to license their tech. When people suggest Masimo or the CEO wasn't willing to license, it's a random-ass guess with nothing backing it.
Score: 7 Votes (Like | Disagree)
jz0309 Avatar
26 months ago
this is a mess and it seems no party is giving an inch. Too bad that the customer is being punished here and not getting this feature, but then again, it doesn't seem to impact sales much.
Maybe the fact that the previous Masimo CEO was kicked out a couple months ago will make them more open for reasonable licensing fees
Score: 7 Votes (Like | Disagree)
Latest Stories
Apple Reveals New iPad Mini's Battery Capacity
Apple Reveals New iPad Mini's Battery Capacity
20 minutes ago
Top Stories: Apple's Big MacBook Pro, iPad mini and iMac Updates
Top Stories: Apple's Big MacBook Pro, iPad mini and iMac Updates
2 hours ago
'Pluribus' Season 2 Reportedly Starts Production Today
'Pluribus' Season 2 Reportedly Starts Production Today
8 hours ago
iPhone 18 Pro Sales Surge in China, Offsetting Decline in U.S. and Japan
iPhone 18 Pro Sales Surge in China, Offsetting Decline in U.S. and Japan
9 hours ago
HomeView Software 27.2: Wallpapers, Control Center, and More
HomeView Software 27.2: Wallpapers, Control Center, and More
15 hours ago
Apple Alerts Stores to iPhone Duo's Display Cracking Issue
Apple Alerts Stores to iPhone Duo's Display Cracking Issue
16 hours ago
iOS 27.3 Will Enable These Apple Intelligence Features in China
iOS 27.3 Will Enable These Apple Intelligence Features in China
17 hours ago
Apple Says iOS 27.3 Beta Coming Next Week
Apple Says iOS 27.3 Beta Coming Next Week
17 hours ago
Apple's Flash Storage Suppliers Are Finally 'Getting Their Revenge'
Apple's Flash Storage Suppliers Are Finally 'Getting Their Revenge'
18 hours ago
14 New Things Your iPhone Can Do in iOS 27.2
14 New Things Your iPhone Can Do in iOS 27.2
19 hours ago
iPhone Duo Review: One Week Later
iPhone Duo Review: One Week Later
20 hours ago
Samsung Mocks iPhone Duo Display Cracks in New Ad Campaign
Samsung Mocks iPhone Duo Display Cracks in New Ad Campaign
21 hours ago
The MacRumors Show: OLED MacBook Pro, iPad Mini 8, and More
The MacRumors Show: OLED MacBook Pro, iPad Mini 8, and More
22 hours ago
MacBook Pro With Touch Display: 15 More Details Revealed
MacBook Pro With Touch Display: 15 More Details Revealed
22 hours ago
Russia Places Apple on State Surveillance Registry
Russia Places Apple on State Surveillance Registry
1 day ago
Halloween Weekend Brings Discounts on Apple Accessories and Pre-Orders
Halloween Weekend Brings Discounts on Apple Accessories and Pre-Orders
1 day ago
Apple Has Released More Than 25 New Products in the Past Two Months
Apple Has Released More Than 25 New Products in the Past Two Months
1 day ago
Local Code Launches as Free, Private AI Assistant Tool for Mac
Local Code Launches as Free, Private AI Assistant Tool for Mac
1 day ago
Apple Acquires Ascend.io
Apple Acquires Ascend.io
1 day ago
HomePod Mini 2 Launches Today: All the New Features
HomePod Mini 2 Launches Today: All the New Features
1 day ago
AirTag 2 4-Pack Drops to New Low Price of $69.99
AirTag 2 4-Pack Drops to New Low Price of $69.99
1 day ago
Rian Johnson's iPhone Camera App Goes Viral
Rian Johnson's iPhone Camera App Goes Viral
1 day ago
Where Did All the iPhone Duos Go? Mostly to Apple's Stores
Where Did All the iPhone Duos Go? Mostly to Apple's Stores
1 day ago
Apple's Touchscreen MacBook Pro Could Ship 1.5M Units in 2027
Apple's Touchscreen MacBook Pro Could Ship 1.5M Units in 2027
1 day ago
New Apple TV 4K and iPad Mini: RAM Amounts Revealed
New Apple TV 4K and iPad Mini: RAM Amounts Revealed
2 days ago
Apple Executive Comments on New iPad Mini Lacking 120Hz Display
Apple Executive Comments on New iPad Mini Lacking 120Hz Display
2 days ago
Here's a Hands-On Look at HomePod Mini 2's New Two-Tone Colors
Here's a Hands-On Look at HomePod Mini 2's New Two-Tone Colors
2 days ago
Apple Lowers App Store Fees in Taiwan Starting October 31
Apple Lowers App Store Fees in Taiwan Starting October 31
2 days ago
HomeView Pre-Order Returns to $289.99 on Amazon
HomeView Pre-Order Returns to $289.99 on Amazon
2 days ago
Apple Avoids Showing Pinched Fingers on iPad Mini Page in South Korea
Apple Avoids Showing Pinched Fingers on iPad Mini Page in South Korea
2 days ago

🔗 Related Apple News & Rumors

Stay updated with the latest Apple ecosystem news and verified rumors