What is the basis for the duration of patent protection?

China's patent law is formulated on the basis of learning from other countries and combining with China's actual situation, and the time limit is not arbitrary. Article 1 of the Patent Law stipulates that this Law is formulated in order to protect the patent right of invention and creation, encourage invention and creation, facilitate the popularization and application of invention and creation, promote the progress and innovation of science and technology, and meet the needs of socialist modernization.

Time limitation is not only to protect patent rights, but also to promote the development of science and technology. In a short time, the patentee can't get the benefits he deserves. American President Lincoln said that patent law is to add interest to the fire of genius. However, for a long time, this technology has been in the hands of a few people, and it cannot be widely popularized and applied, which is not conducive to the development of science and technology.

Each country determines the duration of protection according to its own situation.