Can I continue to use the appearance patent after it expires?

Legal analysis: 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. Unfortunately, the patent cannot be extended after it expires. Patent has entered the public domain and become an open technology with no legal effect, and anyone can implement it for free. This article explains that patent right is different from movable property and immovable property. The ownership of movable and immovable property has no time limit, but the patent right is only valid within the time limit prescribed by law. This feature of patent right is determined by its essence and purpose. The purpose of establishing a patent system is to encourage inventions through the protection and use of inventions, and it must seek a balance between the interests of inventors and the public.

Legal basis: Intellectual Property Law of the People's Republic of China

Article 45 Anyone who commits one of the following acts of infringement shall bear civil liabilities such as stopping the infringement, eliminating the influence, publicly apologizing and compensating for the losses according to the circumstances:

(1) publishing his work without the permission of the copyright owner;

(2) publishing a work created in cooperation with others as a work created by oneself without the permission of a co-author;

(three) did not participate in the creation, in order to seek personal fame and fortune, signed other people's works;

(4) distorting or tampering with other people's works;

(5) Using a work by means of performance, broadcasting, exhibition, distribution, shooting, video recording, adaptation, translation, annotation or editing without the permission of the copyright owner, except as otherwise provided by this Law;

(six) the use of other people's works, not in accordance with the provisions of the payment;

(seven) live broadcast of their performances without the permission of the performers;

(eight) other acts of infringement of copyright and copyright-related rights and interests.

Article 46 Anyone who commits one of the following acts of infringement shall, according to the circumstances, bear civil liabilities such as stopping the infringement, eliminating the influence, publicly apologizing, and compensating for losses, and may be given administrative penalties such as confiscation of illegal income and fines by the copyright administrative department:

(1) Plagiarism and plagiarism;

(2) reproducing and distributing his works for profit without the permission of the copyright owner;

(3) publishing books with exclusive publishing rights enjoyed by others;

(four) without the permission of the performer, recording and publishing his performance;

(five) without the permission of the producer of audio and video recordings, reproducing and distributing the audio and video recordings made by him;

(six) unauthorized reproduction and distribution of radio and television programs produced by radio stations and television stations;

(seven) the production and sale of counterfeit works of art..