They registered it over 10 years ago. […] or did they see and copy it?
You can see patents once they get published, not when the provisional claim gets filed… so no, Apple could not see and copy it.
Apple just magically come up with the same idea
According to Masimo, Apple lured some engineers from Masimo to develop a solution… that happened to be similar enough that Masimo could file, and this time publish a patent after the fact that made Apple infringe it.
a lot of people ready to defend the big multi-billion dollar corp.
Even more people look at the finger and miss the Moon of a broken patent aystem.