If you don't pay the annual patent fee (not once) after obtaining the national patent, what will be the serious consequences? thank you

If the application for a patent for invention is not found to be rejected after the preliminary examination and substantive examination by the Patent Office, and if the application for a patent for utility model or design is not found to be rejected after the preliminary examination, the Patent Office will issue a Notice of Granting Patent Right and a Notice of Handling Registration Procedures to notify the applicant to handle the registration formalities. If the applicant goes through the registration formalities on schedule, the Patent Office will grant the patent right, issue a patent certificate (including the decision to grant the patent right) and announce it at the same time. The patent right shall take effect as of the date of announcement.

If the annual patent fee is not paid (not once), it will not be announced and the patent will not take effect. I did it for nothing in the early stage.

Individual applicants can apply for delaying the payment of official fees such as application fees, which are very large. The specific policies are as follows: Web links.

Article 2 Where it is really difficult for the applicant or patentee to pay the relevant patent fees, he may request the China National Intellectual Property Administration Patent Office (hereinafter referred to as the Patent Office) to postpone the payment of the relevant fees in accordance with these Measures.

Article 3 With the approval of the Patent Office, the following patent fees may be reduced or exempted:

1. application fee (including publishing and printing fee and application surcharge will not be slowed down);

2. Examination fee for application for patent for invention;

Annual fee (within three years from the year when the patent right is granted);

4. Maintenance fee for invention patent application;

5. Review fee.

Article 4 Where the applicant or the patentee is an individual, he may request that 85% of the application fee, examination fee and annual fee for an application for a patent for invention be deferred, and 80% of the maintenance fee and examination fee for an application for a patent for invention be deferred.

Where the applicant or the patentee is a unit, it may request a postponement of 70% of the application fee, examination fee and annual fee for an application for a patent for invention, and 60% of the maintenance fee and examination fee for an application for a patent for invention.

Where two or more individuals or individuals and units apply for a patent at the same time, they may request that 70% of the application fee, examination fee and annual fee for an application for a patent for invention and 60% of the maintenance fee and examination fee for an application for a patent for invention be deferred.

If more than two * * * units apply for a patent at the same time, the patent fee will not be slowed down.