In China, there is no special professional certification of "patent lawyer", that is, every lawyer can of course represent patent litigation, but without the qualification of patent agent, he can't represent patent application, patent reexamination and patent invalidation. At present, there is no such profession as "patent lawyer" in Chinese mainland, because according to the laws of Chinese mainland, lawyers mainly engage in judicial-related practice activities, mainly dealing with judges, public security, prosecutors and other judicial personnel, while patentees mainly deal with examiners and inventors in China National Intellectual Property Administration, mainly engaged in administrative-related affairs. Lawyers and patentees are essentially different, both are very professional occupations, and it is difficult for normal people to make achievements in both industries at the same time.