Lawyers are way too expensive. When I first looked into copyrighting several pieces of my work for a private company I contacted several lawyers and they were asking something in the neighborhood of between $600 - $1,500 U.S.D. where all I needed to do was file and register with the copyright office for a nominal fee of $25 bucks (at the time) and that was for several pieces (batch filing). It's that registration number that will win your case for you if it should come to litigation. If it should then come to litigation it is then that I would suggest that you hire a lawyer since you can then counter sue for legal expenses and it wont have to come out of your pocket.