On Fri, May 22, 2015 at 2:17 PM, John Gateley <tclug at jfoo.org> wrote:

> SCO bought UnixWare from Novell in 95. UnixWare was in some sense
> the direct descendant from Unix System Laboratories. At that point
> they began claiming they owned the name (and if I remember right,
> Novell came back and said something like "sorry, we sold you
> everything EXCEPT the rights to the name Unix").

And before that SCO bought a different Unix variant(Xenix) from Micro-Soft.