Well, first, I said Samoans and patent, not movies and copyrights. However, the situation with a tattoo is vastly and obviously different as well as being unenforceable since any completed tattoo could be visible anytime the bearer has their picture taken. So, how would anyone license that? That being said, if a tattoo artist were to steal or copy another artist's 'flash' (the artwork itself) or claim it as his own, it would indeed fall under the heading of plagiarism and copyright infringement. It probably happens a lot more than anyone really knows, but since the Samoan print isn't defined as such, I doubt that such a case would stand up in court.