Maximo doesn’t seem to want to settle. They are out for blood.
Presumably to measure its oxygen content.
Masimo already said multiple times they would be more than happy to settle. All they want is their patents back that Apple stole and a royalty fee. It really is not that complicated. Apple decided NOT to go that route and would rather take the hard way.

Masimo keen to get a settlement, but Apple won't call
Masimo CEO Joe Kiani claims the medical device company is open to a settlement discussion over the upcoming U.S. Apple Watch sales ban, but Apple allegedly hasn't made any moves to do so.