Two, the invention patent substantive examination fee for individuals to apply for 375 yuan, the company to apply for 2500 yuan (not extended) and 750 yuan (extended); According to what you said, the examination fee actually paid to the State Patent Office is 750 yuan, so the application will be slowed down.
Third, the agency fees of different places and patent agencies are different, depending on the difficulty of applying for a patent.
Fourth, the firm is equivalent to the agency of the State Patent Office. It is relatively familiar with the patent law and the file format of patent applications, and it is relatively easy to apply, which can guarantee the one-time application. At the same time, you can quickly grasp the time; However, it is also a bit troublesome (e-mail exchange between the applicant company and the patent agency).
Fifth, if the company has many patents, it is recommended to apply for them; If not, you'd better find a patent agency.