The agency fees are different for different patent types and patent requirements, different regions, different firms, and different patent attorneys (professional, educational background, experience). The following is the approximate fee situation. Invention patents: the lowest agency fee can be 4,000, and the highest is more than 10,000. It should be noted that it is necessary to know whether the agency fee includes the cost of responding to the review opinion; utility model: generally 1,800-2,200, and the highest is more than 3,000. ; Appearance patents: less than 1,000.