Why do you even worry about those lunitoons?
If and when they sue you (your club, your group, your whatever) they have to make a claim for DAMAGES. Don't settle. Let them prove that you have done damage to their commercial interests.
Have fun with them.
They can keep nice citizens in court for ever. Make it your entertainment project for your group to do the same to them. You don't need a lawyer. Just question their damage claim.
Sooner or later THEY will be thrown out of court.