The Apple Watch‘s blood oxygen sensor has been at the center of what feels like a never-ending tennis match of legal back-and-forth.
In 2020, the Apple Watch Series 6 launched with the sensor that measures your blood’s oxygen saturation (SpO2), which is how much oxygen red blood cells pick up from your lungs and transport to the rest of your body. That same year, global medical technology company Masimo filed a lawsuit claiming that Apple’s sensor infringed its patents. In 2023, the US International Trade Commission sided with Masimo and imposed an import ban on Apple Watch Series 9 and Ultra 2 models.
However, on Friday, the ITC declined Masimo’s request for another import ban on the Apple Watch and said it wouldn’t review a preliminary ruling finding that the redesigned Apple Watch doesn’t infringe Masimo’s patents. This is a major win for Apple.
Unless Masimo decides to appeal the decision, Apple can bring blood oxygen monitoring back to its devices.
But based on the history of this case, it may not be the end of this match.
The history of Apple’s blood oxygen ban
The ITC became involved in the Masimo and Apple legal battle in 2021, and in January 2023, it upheld that Apple violated Masimo’s patents. Then, in December 2023, the ITC banned Apple from importing its watches, including the Series 9 and Ultra 2, into the US.
Ahead of the Apple Watch Series 11 launch, Apple reintroduced blood oxygen sensing in August 2025, which was approved by the US Customs and Border Protection. It got around the ban by using a paired iPhone to display blood oxygen levels instead of the Apple Watch. Masimo sued US Customs over this decision.
If relaunched, you’d be able to view your blood oxygen levels in the iPhone’s Health app.
Apple
In November 2025, a jury for the US District Court for the Central District of California found that Apple infringed one of Masimo’s patents and awarded the company $634 million in damages. Apple told AppleInsider that it plans to appeal, claiming that the patent expired in 2022.
Though the ITC has rejected another ban on Apple’s blood oxygen feature and declined Masimo’s request to review the ruling in Apple’s favor, Masimo may continue the battle, especially given its November win, after which the company released a statement saying, “We remain committed to defending our IP [intellectual property] rights moving forward.”
An Apple representative didn’t immediately respond to a request for comment. Masimo declined to comment.
In the meantime, if your curiosity gets the best of you, you could always purchase a pulse oximeter. It’s a device that estimates your blood oxygen level by measuring the light that passes through your finger. No messy legal battles involved.
Rewards cards are frequently rolling out high-value welcome offers. If you’re a travel enthusiast like us at TPG, it’s likely you’re keeping your eyes peeled for standout bonuses.
This month, we’ve compiled five of our favorite cards with stellar offers right now. These range from top-tier business cards to cobranded options for your next trip — and you won’t want to miss out on the value.
Plus, there are even more limited-time offers available, so don’t stop your search here if none of these currently suit your needs.
Our favorite credit card welcome offers in April 2026
Card
Welcome offer
Welcome offer value*
Annual fee
Earn 200,000 bonus points after spending $20,000 on purchases in the first three months of card membership.
$4,000
Earn 100,000 bonus points and a 25,000-point Global Companion Award after spending $6,500 on purchases in the first 90 days from account opening. Plus, receive a 50% flight discount code for a qualifying future flight after opening your new account.
$1,750 (including the value of the Global Companion Award)
$395
Earn 75,000 bonus miles after spending $4,000 on purchases in the first three months from account opening. Plus, upon approval, receive a $250 Capital One Travel credit to use during the first year.
$1,638
$95
Receive a $300 electronic Disney gift card immediately upon approval, plus earn a $300 statement credit after spending $1,000 on purchases in the first three months from account opening.
$600
$149
Earn 200,000 bonus points after spending $6,000 on purchases in the first six months of card membership. This offer ends May 13.
$1,500
*Welcome offer value is determined using TPG’s April 2026 valuations and is not provided or reviewed by the issuer.
The Business Platinum Card from American Express
Luxury-minded travelers who qualify for a business card will love the many perks that come with an Amex Business Platinum Card membership.
THE POINTS GUY
Welcome offer: Earn 200,000 bonus points after spending $20,000 on purchases in the first three months of card membership.
Why we love it: Carly Helfand, TPG’s director of points, miles and credit card content, loves the statement credits on her Amex Business Platinum, especially since they led to her enjoying up to $600 in hotel credits** last year. She said she’s already used the benefit twice — once last December for a stay at Wynn Las Vegas and once in February for a stay at the Andaz Prague.
Carly also loves the card’s Hilton statement credit of up to $50 per quarter on eligible purchases made directly with a property in the Hilton portfolio***. She said she finds these credits super easy to maximize and recently used one to cover poolside dining charges at the Boeira Garden Hotel Porto Gaia, Curio Collection by Hilton in Portugal.
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**The hotel credits are received as two statement credits of up to $300 biannually on prepaid American Express Fine Hotels + Resorts or The Hotel Collection bookings with Amex Travel when you pay with your Amex Business Platinum. The Hotel Collection stays require a two-night minimum.
***Enrollment is required. Separate Hilton for Business program membership is required.
The Atmos Rewards Summit is an excellent card for Alaska and Hawaiian loyalists, but there’s plenty for other types of travelers to love as well.
THE POINTS GUY
Welcome offer: Earn 100,000 bonus points and a 25,000-point Global Companion Award after spending $6,500 on purchases in the first 90 days from account opening. Plus, receive a 50% flight discount code for a qualifying future flight after opening your new account.
Why we love it: Even though senior credit cards editor Giselle Gomez doesn’t live in an Alaska Airlines hub, she decided to open the Summit because she frequently flies with Oneworld alliance partners. She said she loves that she can rack up Atmos Rewards points to redeem them for flights with partner airlines.
Plus, the card earns 3 points per dollar spent on foreign purchases, which makes it an easy go-to option when she’s abroad.
The Venture Rewards stands out as a fantastic option for travelers looking to collect valuable rewards with simplicity.
THE POINTS GUY
Welcome offer: Earn 75,000 bonus miles after spending $4,000 on purchases in the first three months from account opening. Plus, upon approval, receive a $250 Capital One Travel credit to use during the first year.
Disney fans, listen up: The all-new Disney Inspire Visa can unlock massive savings for your next trip to the castle.
THE POINTS GUY
Welcome offer: Receive a $300 electronic Disney gift card immediately upon approval, plus earn a $300 statement credit after spending $1,000 on purchases in the first three months from account opening.
Why we love it: Senior points and miles editor Gabrielle Bernardini visits Disney World a few times a year, so she enjoys receiving a $100 statement credit each anniversary year (after spending $200 on U.S. park tickets) with the Disney Inspire.
This perk helps Gabrielle offset one of the biggest Disney vacation expenses: park tickets.
In the world of cobranded hotel cards, the Marriott Bonvoy Brilliant provides solid top-tier perks for those loyal to the brand.
THE POINTS GUY
Welcome offer: Earn 200,000 bonus points after spending $6,000 on purchases in the first six months of card membership. This offer ends May 13.
Why we love it: Senior editor Christine Gallipeau initially added the Marriott Bonvoy Brilliant to her wallet to receive the card’s automatic Platinum Elite status, which she knew she’d take full advantage of while traveling, as well as during staycations in the Washington, D.C., area with her hotel-loving pup. However, it now stays in her wallet for several other reasons.
In addition to enjoying late checkout and free breakfast at select Marriott properties, Christine also maximizes the card’s dining statement credits (up to $25 each month for eligible dining purchases worldwide). She also loves applying her annual free night award (worth up to 85,000 points; certain hotels have resort fees) toward a staycation each year at one of her favorite local hotels, The Ritz-Carlton Georgetown, Washington, D.C., where rates are often close to or over $1,000 a night.
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