Specifically US law, but many countries have agreed on copyright protection laws. EULA and copyrights are very different things. As always, an intellectual property attorney in the proper country should be consulted.

>Which law? US law? Let me remind you that this is an international forum where different laws apply depending on the country you're operating in. There are several examples (e.g. MS and Oracle) who found out the hard way that their EULA's and MS laws are not universally recognised.