What does not constitute patent infringement?

Legal analysis: The cases that do not constitute patent infringement are: 1. After the patented product manufactured or imported by the patentee or the product directly obtained by the patented method is sold, the patentee uses, promises to sell or sells the product; 2. Using or selling a product that is manufactured or sold without the permission of the patentee, knowing that it is a patented product or a product directly obtained according to the patented method, can prove the legal source of the product; 3. Having manufactured the same product, used the same method or made necessary preparations for manufacture and use before the patent application date, and continuing to manufacture and use it only within the original scope; 4. Dedicated relevant patents to scientific research and experiments.

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..