As stated and now restated: The copyright wouldn't transfer, but a company might find it difficult to collect payment or awarded damages from one company if they allow others to behave exactly the same way without consent and do not prosecute. The behavior of misuse of the material would very likely cease. My point all along that I still maintain is that a copyright holder can't just sit around and think that just the possession of said copyright will do the work itself. It won't. Other than that the talk here is splitting hairs. I have had to deal with elements of this issue in the past (not as the offender, of course) and I am currently seeking out the best way to protect a current idea that I would like to see on store shelves a few years down the line.