A newsletter dating back in 1985 surfaced, providing evidence that AT&T had agreed, back in August 1985, that they will claim no ownership over code developed by the licensees of the product, only over the protions AT&T had developed. This means that SCO's case against IBM, which is based all on the assumption that SCO owns all the code within IBM's AIX does not rest on solid grounds at all.

And to add to that...,00.htm An industry group claims that SCO cannot revoke the licences they have already issued.