This particular one just the latest. But the really big one (IMHO) is the one where they simply started to ignore EFF[0], when they were asking them about the copyright status of co-pilot. If the court decides against EFF, that will have a lot of effect on the legality and enforcement of most of the OSS licenses (though I'm an armchair-lawyer, not even in the US). Fun times ahead.
[0]: if I remember well, it was EFF, who mentioned that MS stopped responding to them. I have found the lawsuit, but filed by not by the EFF. Google is more useless by the day.