Pretty sure any legal action against a European club would be futile & expensive if not even possible. Copyright protection is a mine field, having said that the bases for any action is loss or deception, be that financial or reputation. I very much doubt the Cardiff Devils have incurred either. Also the logo is not exact, it’s a poor similar logo, you can’t claim against similar, the club l doubt own the rights to Lucifers features. That’s all assuming the Devils have protected the logo, it wouldn’t be unusual considering the cost when you consider the chances of the U.K. having more than one Devils ice hockey team.