A patent agent refers to a person who has obtained the qualification to apply for a patent and handle other patent affairs on behalf of others. A patent agent should have certain practicing conditions. After approval, China National Intellectual Property Administration will issue a patent agent qualification certificate and practice for one year, and record the practice through the patent agent management system [8]. According to international practice, patent agents must be industrial property workers with excellent academic performance. In the laws and regulations on patent agency formulated by various countries, it is stipulated that the qualification of patent agent can be revoked at any time according to its behavior. The specific business of patent agents can be roughly divided into providing patent consultation, handling application procedures, maintaining patent validity, and representing litigation. Where the applicant entrusts a patent agency to apply for a patent to the Patent Office and handle other patent affairs, it shall also submit a power of attorney, indicating the authorization authority.