One answer or question I am looking for ....You sue you win fine .. next sticker ..they do the same .. again you sue you win.
Sooner or later someone goes out of business & starts all over.
What I am looking for, you stated you are losing 50% from this low life copy cat
What is this can't do by themselves doing to take away sales of 50% that you are not doing well that they seem to be doing well besides being a copy cat ..fair question.
& by the way if they have to copy everything you do to make a living you should have nothing to worry about since you will come up with the better mouse trap 1st, 2nd, 3rd & each time and that is how you make a better living, your employees would rather work with you then them, your banker will be happy with you not them, sooner or later you totally win.
Another option instead of lawsuits ..just buy them out add a non-compete clause.