Intellectual property rights mainly include copyright, patent right and trademark right, and intellectual property rights also have a time limit.
According to copyright law
Article 20? The term of protection of the author's right of authorship, modification and protection of the integrity of the work is unlimited. That is, these three rights are permanently protected by law.
Article 21? For a citizen's work, the term of protection of his right of publication and the rights stipulated in Item (5) to Item (17) of Paragraph 1 of Article 10 of this Law shall be the author's life and fifty years after his death, ending at 65438+February 3 1 day in the fiftieth year after his death; If it is a cooperative work, the deadline is 65438+February 3 1 50 years after the death of the last dead author.
The term of protection for the works of a legal person or other organization and the works in which a legal person or other organization enjoys the right to publish and the rights stipulated in Items (5) to (17) of Paragraph 1 of Article 10 of this Law is fifty years, ending at 65438+February 3 1 day in the fiftieth year after the first publication of the works, but the works have not been published within fifty years after the completion of the creation.
For cinematographic works and works created by similar cinematographic or photographic methods, the term of protection of the right of publication and the rights stipulated in Items (5) to (17) of Paragraph 1 of Article 10 of this Law is fifty years, ending at 65438+February 3 1 day in the fiftieth year after the first publication of the works. However, if the work is not published within 50 years after the creation is completed, this law will no longer protect it.