Why SCO Does Not Own the Unix Copyrights

For many years the IT industry presumed that Santa Cruz Operation was the sole and rightful owner of the original Unix. Unix, of course was developed originally at AT&T and spun off into their USL division, which was later sold to Novell. In 1995 there was the sale of Unix assets to Santa Cruz Operation. It was widely assumed that all enforceable copyrights followed that sale. We now know that is apparently not so.

Why SCO Does Not Own the Unix Copyrights.