Advantages and disadvantages of the current system of utility models. Proposals for revision of utility model legislation: A. Adopting a registration system. B. Adopting a substantive examination system. C. Adopting a documentation seaching system D. Adopting a registration plus substantive examination system. E. Adopting a system of preliminary examination plus domestic novelty examination by patent agency. F. The scope will not be limited to the model. G. Final judicial review.