I think it would cost more in sales to basically protect the shape than it would be worth. It is a little different story with the name issue . The last time that happened during my days as a business a lot of the mom and pop stores pulled Blakemore products of their shelves .They continued to make and sell the house lure or anglers bought molds and made them themselves .They sure didn't get anywhere with Do-It the molds are still being made .