Xinuos sues IBM

They limit their claims to 1995 and later, so only SCO code. In the abstract, I could see IBM taking code from a smaller partner in Project Monterrey, but I'd be a lot more convinced if it was specific, instead of acting like some (not clearly specified) code from 1995 is critical to a large range of things in IBM. As it is, of course, it's an extension of the SCO lawsuits, so how they can claim (as they do in the suit) that they didn't realize this until 2019?