я именно это и имел ввиду.
Вот хороший ресурс:
http://www.publaw.com/copyright/
How much do I have to change in order to claim copyright in someone else’s work?
Only the owner of copyright in a work has the right to prepare, or to authorize someone else to create a new version of that work. Accordingly, you cannot claim copyright to another’s work, no matter how much you change it, unless you have the owner’s consent.
Короче, при желании докопаться можно всегда.