Legal analysis: the term of patent intellectual property protection is 20 years; The term of utility model patent and design patent is 10 year, counting from the date of application. Article 44 of the Patent Law shall be terminated before the expiration of the time limit under any of the following circumstances: (1) Failing to pay the annual fee as required; (2) The patentee waives his patent right in writing. In these two cases, the patent terminates, and of course there is a third case, that is, the patent expires and the protection naturally terminates. Then we finally concluded that the protection period of a patent is shorter than that of a patent, the starting date is the announcement date of patent authorization, and the ending date depends on the patentee, but the longest time is until the patent expires.
Legal basis: Article 44 of the Patent Law of People's Republic of China (PRC) is under any of the following circumstances, and the patent right shall be terminated before the expiration of the time limit:
(a) failing to pay the annual fee in accordance with the provisions;
(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.