Apple Poached Employees and Used Underhanded Tactics to Steal Trade Secrets, Alleges Masimo

Apple's legal battle with pulse oximetry company Masimo has been taking place over the course of the last two weeks, but we've heard little about it. The judge overseeing the case sealed some parts of the trial, but legal affairs journalist Meghan Cuniff, who has been following the dispute, today shared some details on what the two sides are arguing over in court.

apple watch series 8 red
For a refresher, Masimo has accused Apple of poaching employees and stealing trade secrets for the Apple Watch. Masimo believes that Apple developed five pulse oximetry patents using trade information stolen from Masimo. Masimo wants co-ownership of the patents and a payout of $3.1 billion. It is worth noting that Masimo previously targeted Apple with patent infringement claims, but the United States Patent and Trademark Office invalidated all but two of the patents, which is when Masimo turned to theft of trade secrets.

Apple hired Masimo Chief Medical Officer Michael O'Reilly in July 2013 and Cercacor Chief Technical Officer Marcelo Lamego in early 2014 (Cercacor is a Masimo spinoff company) to work on the Apple Watch. Masimo claims that Apple was deliberately stealing employees and that Lamego in particular shared secret Masimo information with Apple, while Apple claims that the hiring of the two had nothing to do with their prior experience at Masimo and was based on their talent. Apple maintains that the former Masimo employees did not divulge Masimo's intellectual property rights when they worked on the Apple Watch, despite Masimo's accusations.

Lamego was only at Apple for six months, but he filed for 12 patents in that time and was named as an inventor on several future Apple patents. He worked on the same kind of sensor that he had worked on at Masimo, which Masimo has taken issue with. Lamego was hired at the recommendation of O'Reilly, who at the time warned Apple that "most of his knowledge" would be "considered confidential information of Cercacor or Masimo." Apple, meanwhile, pointed to an email Lamego sent to Apple CEO Tim Cook where he said that he could "add significant value" to Apple without relying on the work he did for Masimo. Hiring emails suggest that Apple was interested in his "specialized experience" needed for Apple Watch sensors.

Lamego claims that when he worked on the Apple Watch's heart rate detection algorithm, he had to "exercise extra care to avoid IP conflict." Lamego said that his work for Apple was stunted after Masimo sent a threatening letter not long after his hiring, which caused Apple to pull back on the resources provided to him. He ultimately left, but Masimo maintains that what he shared with Apple during that time was instrumental to the development of the Apple Watch. The patents that were issued to Apple in 2019 were "on [Masimo's] stuff," according to Masimo CEO Joe Kiani.

Prior to when Lamego worked at the company, Apple's internal emails reflected trouble with the development on the Apple Watch. "Frankly, I think this is a mess," wrote now-retired Apple executive Bob Mansfield about early work on the Apple Watch sensor, adding that the sensor would "fail" on its "current path." Apple vice president of corporate development Adrian Perica also expressed concerns about the device, writing that the Apple Watch was "already way behind" other wearables on the market.

Masimo presented emails between Mansfield and Perica, who discussed acquiring Masimo during the time period when the Apple Watch was in development. Apple decided against it because the company's large size isn't Apple's "style" and wouldn't "accelerate [Apple's] roadmaps and products," according to Perica. Perica at one point referred to extending an "olive branch" to Masimo by offering tickets to an Apple event, which Masimo lawyers cited as evidence that Apple knew it had wronged Masimo in some way.

Apple claims that Masimo is targeting it with the lawsuit because Masimo saw the success of the Apple Watch and decided to make its own smart watch. Masimo has largely been focused on large medical devices created for hospitals rather than wearables. In a trial brief, Apple said that what Masimo claims are "trade secrets" are ideas "long known and used by multiple companies."

The eight-person jury hearing the case is expected to begin deliberations as soon as next week as Apple and Masimo finish their legal arguments. The U.S. International Trade Commission has already ruled that Apple infringed on Masimo patents with the Apple Watch, a ruling that Apple is fighting.

Popular Stories

iPhone 17 Pro Blue Feature Tighter Crop

iPhone 17 Pro Launching in Three Months With These 12 New Features

Saturday June 21, 2025 2:45 pm PDT by
The iPhone 17 Pro and iPhone 17 Pro Max are around three months away, and there are plenty of rumors about the devices from credible sources. Below, we recap key changes rumored for the iPhone 17 Pro models as of June 2025:Aluminum frame: iPhone 17 Pro models are rumored to have an aluminum frame, whereas the iPhone 15 Pro and iPhone 16 Pro models have a titanium frame, and the iPhone X...
iPhone 16 Battery Life Feature

iOS 26's New Battery Life Mode Available Only on These iPhone Models

Saturday June 21, 2025 9:02 am PDT by
Last week, we reported that iOS 26 introduces an opt-in Adaptive Power Mode on the iPhone, alongside the existing Low Power Mode. Apple says that Adaptive Power Mode can make "small performance adjustments" when necessary to extend an iPhone's battery life, including slightly lowering the display brightness or allowing some activities to "take a little longer." The full description of...
All Screen iPhone 2027 Feature 1

iPhone Reportedly Moving to All-Screen Design in Two Stages

Sunday June 22, 2025 3:58 pm PDT by
Apple has long been working towards an iPhone with an all-screen design, and it might finally achieve the feat in a few more years from now. In his Power On newsletter today, Bloomberg's Mark Gurman said that Apple will shrink the size of the Dynamic Island on new iPhone models released next year. A year after that, he expects Apple to release a redesigned 20th-anniversary iPhone model....
ios 26 control center b2

Everything New in iOS 26 Beta 2

Monday June 23, 2025 2:57 pm PDT by
Apple provided developers with the second beta of iOS 26, introducing the first changes and refinements to the new operating system since it debuted after the WWDC keynote. Because we're early in the beta testing process, there are quite a few tweaks to iOS 26, which we've rounded up below. Subscribe to the MacRumors YouTube channel for more videos. Control Center The background behind the...
ios 26 control center b2

iOS 26 Beta 2 Fixes Control Center Design

Monday June 23, 2025 10:58 am PDT by
With the second beta of iOS 26 that Apple provided to developers today, Apple addressed one of the major complaints that people have had with Liquid Glass. iOS 26 beta 1 on left, iOS 26 beta 2 on right The Control Center buttons are now slightly more opaque, making it easier to see the different control options even on a multicolored background. The new, more opaque look is apparent with the ...
iPhone 17 Pro Blue Feature Tighter Crop

iPhone 17 Pro's Alleged Vapor Chamber Cooling System Partly Revealed

Sunday June 22, 2025 6:37 am PDT by
Apple's upcoming iPhone 17 Pro and iPhone 17 Pro Max models are rumored to be equipped with a vapor chamber cooling system, and a leaker known as Majin Bu today shared a photo of an alleged copper thermal plate for the system. Many high-end Android smartphones like Samsung's Galaxy S25 Ultra are equipped with a vapor chamber cooling system, which can manage heat dissipation inside the...
Wi Fi WiFi General Feature

iOS 26 Adding Two New Wi-Fi Features, Allows AirDrop and AirPlay Alternatives

Saturday June 21, 2025 7:02 am PDT by
iOS 26 is gaining two new Wi-Fi features, including Captive Assist and Wi-Fi Aware. MacRumors contributor Aaron Perris discovered a reference to Captive Assist within the code for the first iOS 26 developer beta, but Apple has yet to enable the feature. It should be available by the time the software update is released later this year. In his Power On newsletter last month, Bloomberg's...
iOS 26 on Three iPhones

iOS 26 Includes These Five Smaller Features You Might Have Missed

Saturday June 21, 2025 11:18 am PDT by
While the dust is beginning to settle on the first iOS 26 beta, we continue to take a closer look at new features coming with the update. Below, we recap five smaller changes that you might have missed. Emoji Game Apple News+ subscribers in the U.S. and Canada can play a new Emoji Game, which tasks players with completing words and phrases with emoji. This is the fifth game that is...
airpods 4 blue

Apple Offering Free AirPods — Here's How to Get Them

Tuesday June 17, 2025 6:33 am PDT by
Apple is running a new promotion that offers free AirPods to qualifying customers. Now through September 30, college and university students in the U.S., Canada, Mexico, and Singapore can receive free AirPods 4 when they purchase an eligible new Mac or iPad from Apple. AirPods Pro 2 are also available at a discount. If you do not want AirPods, the promotion also offers various other...

Top Rated Comments

JitteryJimmy Avatar
29 months ago
"Poaching" is a sad term that implies that a hiring company did something wrong or distasteful. "Poaching" is just the hiring an employee. It is not illegal or immoral to hire employees from a competitor or from anywhere else. Changing jobs is how workers can make more money.
Score: 23 Votes (Like | Disagree)
macduke Avatar
29 months ago
I hate it when companies try to own their employees and think of them as being "poached" which seriously limits our ability to go elsewhere and further advance our careers. We are not pawns, we are not toys that you collect.

My company tried to get me to sign an NDA after I had worked there a while. It included language that I couldn't leave to work for competitors or otherwise companies that worked with our clients. I told them no, lol. Fortunately I'm in a position to have leverage and seniority, unlike most workers. We need a workers bill of rights to make this garbage illegal.
Score: 15 Votes (Like | Disagree)
roar08 Avatar
29 months ago
Oh no, someone hired your employees away. The *general* corollary of this of course is the obvious: you failed to retain your employees. And of course, now comes the WE MAD.
Score: 11 Votes (Like | Disagree)
frenchcamp49er Avatar
29 months ago
Companies "poach" employees all the time. How many Apple employees have been hired by other companies.
Score: 9 Votes (Like | Disagree)
Baritone_Guy Avatar
29 months ago
It’s amazing just how much he was able to do from scratch in 6 months.

/s
Score: 7 Votes (Like | Disagree)
Analog Kid Avatar
29 months ago
This will be interesting to watch. As written here it feels like this person carried out Masimos IP and patented it for Apple but there are two obvious questions: did he carry out physical documents or just the understanding of how to do something, and if it was precious and patentable why didn't Masimo do that?

Trade secrets are generally things that aren't patentable or that you wouldn't want to disclose though a patent because it would teach your competition. Teaching the competition would be bad if the patent is easily circumvented. If it's easily circumvented then the patent isn't anything to get upset about. If Masimo has already done what Apple has patented then it's prior art and the patent is invalid.

Another possibility is that this employee thought their ideas were worth pursuing, Masimo didn't, Apple did, Apple made bank on those ideas, now Masimo is regretting their decision to not move forward with it. Apple patents stuff all the time they don't intend to pursue though, so that would suggest Masimo saw so little value in the ideas that they didn't want to fund the patents. If they held that little value for Masimo, then are they really trade secrets?
Score: 5 Votes (Like | Disagree)