The application fee for invention patent is 900, the publishing and printing fee is 50, and the substantive examination fee is 2500. If the applicant is a natural person and his annual income is less than a certain amount, the above application fee and substantive examination fee can only be paid 15%.
But if you are applying for a patent for the first time and want to get a patent certificate, I suggest you find a formal agency to help you write the application documents.
Because patent application is a legal matter, if you apply for it yourself, you need to know and learn some relevant provisions of the Patent Law and its implementing rules before you can write an application document that basically meets the requirements in form. However, in the process of patent examination, some things may not be handled well.