Are there design copyrights? Or would it be feasible to copy my 1995 GT Xizang (a titanium mountain bike) in another titanium clone? Only improvement I could think of might be lengthening the wheelbase a tad, and adding lugs on the chainstays for disc brakes, as well as the standards for V-brakes. Maybe lugs for a rear rack. Result: Mountain bike, commuter bike, touring bike hybrid.
Would that be feasible? If so, how much would something like that cost?