On the basis of theoretical demonstration of a legal system's utility,it makes an overall e-valuation on the dynamic utility of China's patent system since its foundation. The empirical analysis shows that there is a connection between the utility of patent system and the degree to which it has developed jthere is a close correlation between the number of patent grants and the GDP of a nation. In addition ,the patemt of utility models and designs has a remarkable impact on China's economic de-velopment while the patent of inventions only has tiny impact. It indicates that at the present,the em...
