So what are the actual chances blood oxygen comes back to the Apple Watch? Or would Apple have to completely redesign how it reads blood oxygen before it returns?
Probably slim, but it's anyone's guess.
This dispute has been ongoing since January 2020. If Apple wanted to settle by licensing, they would have done it by now. If there were a commercially feasible way to use another sensor, it probably would have been done by now.
The two infringing patents are set to expire August 2028.