either way, I would try and document, (ie. submit to some exterior time indexed service) some branding details, drawing etc these things can only help a litigo

either way, I would try and document, (ie. submit to some exterior time indexed service) some branding details, drawing etc these things can only help a litigous battle should it arise, and reserve for yourself, as long as they can't prove your infringing on a trade mark, a defense under copywrite...