Is there a charge for giving up the patent right?

First of all, the patentee gives up his patent right in writing, which belongs to the act of giving up the patent automatically. In another case, those who fail to go through the registration formalities at the expiration of the period are deemed to have given up the right to obtain the patent right. After the patent administrative department of the State Council issued the notice of granting the patent right, the applicant shall go through the registration formalities within 2 months from the date of receiving the notice. According to the provisions of China's patent law, the term of invention patent right is 20 years, and the term of utility model patent right and design patent right is 10 years, all of which are counted from the date of application. The patent right that fails to pay the annual fee in accordance with the provisions shall be terminated before the expiration of the time limit, and if the patent right is terminated before the expiration of the time limit, it shall be registered and announced by the patent administration department of the State Council. Article 44 of the Patent Law of People's Republic of China (PRC)? In any of the following circumstances, the patent right shall be terminated before the expiration of the time limit: (1) failing to pay the annual fee as required; (2) The patentee waives his patent right in writing. Where the patent right is terminated before the expiration of the time limit, it shall be registered and announced by the patent administration department of the State Council.