If you're looking for Internet advice, search the forum on sportsshooter.com. This sort of question has come up there; however, you won't be able to post there without being a paid member. The pro forum on fredmiranda.com is another source (you must be registered member to post, but is free).
But if you're really serious about this, contact an attorney specializing in copyright matters and intellectual properties. That person will best be able to tell you what you need to do, and how much it will cost. From there you can decide what you want to do.