This is an interesting topic. Like many delimmas in life, there is the question of what is legal and what is considered ethical/morally responsible. Anyone familiar with copy right protection understands that it extends to written copy, musical and cinematic productions, etc. not durable goods such as a grinder. Many people are equally confused as to patent protection. There are many such grinders on the market, so getting something like this patented would be virtually impossible, unless there is something truly novel in the design. Another hurdle is that obtaining patents are often prohibitively expensive for something like this and enforcing them is even more expensive. As a whole, the knifemaking community seems to disapprove of one maker outright copying another maker's knife designs, so why doesn't this same courtesy extend to knifemaking tools such as grinders? The maker's knife design isn't protected by a patent, so legally speaking, copying it isn't illegal, but has the copier done anything wrong? At the end of the day, my rule of thumb is the sage "do unto others as you'd have them do unto you". In my mind, Enrique has done such here once he learned that Tom had purchased the rights to this design.