Patent/copyright lawyers and would depend a lot upon just what was included in the sale agreement, which would have probably been drawn up by lawyers. Once that situation is clarified to everyone's satisfaction then the patent/copyright laws will not be aplicable because ownership of the material would have been established in the sale agreement, which BTW should have a non-compete clause in it. I would think that as long as the code wasn't the same there shouldn't be too big of a problem settling this but you have to accept that lawyers are going to be involved.
[b]Dawg[/b] ]:)