How to calculate the annual fee for invention patents?

Algorithm of annual fee for invention patent: The payment standard shall be calculated according to the regulations of the State Council price management department, finance department and the State Council patent administration department. Payment time is generally before the expiration of the previous year. If the annual fee is overdue, it shall be notified to pay it back within 6 months from the date when the annual fee expires, and a late fee shall be charged. If it is not paid at the expiration of the time limit, the patent right shall be terminated.

legal ground

Article 93 of the Detailed Rules for the Implementation of People's Republic of China (PRC) Patent Law

When applying for a patent and going through other formalities with the patent administration department of the State Council, the following fees shall be paid:

(1) Application fee, application surcharge, publication and printing fee and priority claim fee;

(2) Examination fee and reexamination fee for an application for a patent for invention;

(3) Patent registration fee, announcement printing fee and annual fee;

(four) the right to recover the claim fee and the extension of the claim fee;

(five) the specification change fee, the patent evaluation report request fee and the request fee for invalidation.

The payment standards of the fees listed in the preceding paragraph shall be stipulated by the price management department of the State Council and the financial department in conjunction with the patent administration department of the State Council.