Apple customers have been wanting this blood oxygen feature on the watch and have been asking for it but because Apple are such a greedy company, they refuse to pay Masimo a license to use the patent behind this blood-oxygen feature thereby denying Apple customers what they want.
Just pay the damn patent license Apple instead of trying to bully your way into making the patent invalid thus not having to pay Masimo anything because that is what all this faff us about, is about Apple not wanting to pay a rival company (Apple wanted to use a blood-oxygen feature in their watches, thus making them a rival) any money to use that companies patent.
This is what we have come to see of Apple, a company who refuses to pay other companies for their technology. If they cannot use it for free Apple will either buy the company or try and get patents ruled invalid. Look at what Apple tried to do with Qualcomm. Spent years trying to get Qualcomm's wifi patents ruled invalid and when that didn't work they bought Intel's wifi division so they could try and make their own wifi hardware. When that failed they went back to try and Qualcomm's wifi patents ruled invalid again.
This is how it works in the corporate world, you either buy out the competition or you bully them into working with you. Apple are masters at it.
Where have you gotten your information that "they refuse to pay Masimo a license to..."? Apple has numerous agreements in place to pay patent holders for IP. I think more likely than Apple refusing to pay a license fee is that Apple and Masimo can't agree on what a "reasonable" fee is.
Since Masimo's patents aren't SEP, they can claim they are worth whatever they want. In court filings, Masimo originally asked for 1.85 billion dollars. Which would lead a reasonable person to suspect they believe they are entitled to a significant per device fee.
Keep in mind that Apple doesnt sale nearly as many watches as they do phones. In 2020 for example, they sold around 43 million watches as compared to almost 200 million phones. It is estimated that Apple pays licensing fees to ARM at a rate of around .30 per chip, so around 60 million for the phones that year. You mentioned Qualcomm, it is estimated that Apple pays them about 1.6 to 1.8 billion a year, which is uncommonly high even for a SEPs royalty. That being the case, Masimo is not negotiating from a position of good faith when claiming they are owed 1.85 billion for a single (non-marquee) feature on a relatively low volume product.
You say "This is how it works in the corporate world, you either buy out the competition or you bully them into working with you. Apple are masters at it." The only reason this sounds even a little off if because you used the word "bully", like Tim is shoving Joe's head into a toilet and giving him a wedgie or something. These are two massive companies who are in the midst of a business dispute over IP, they've both made financial assessments of the situation and have come to dramatically different conclusions about the value of the IP.
Also, don't pretend that Masimo is some small company being run by a pair of scrappy upstarts out of a garage somewhere, the private jet that Kiani flys on is probably just as nice as the one Tim flys on, or at least not noticeably different to most people who are not Billionaires, which both Kiani and Tim are. So to suggest that he is in a position to be bullied is simply not accurate.