Extension: China's first patent law was promulgated in March of 1984 and came into effect in April of 1. 1September 4, 992, the first revision was mainly to expand the scope of patent protection and extend the term of patent protection; It was revised for the second time on August 25th, 2000, and the revised Patent Law came into effect on July 1 2006. The main changes are as follows: the provisions of "holding" patents by units owned by the whole people have been abolished, service inventions have been reasonably redefined, and service inventors have been given rewards or remuneration, which has strengthened protection and simplified and improved the procedures for patent examination and approval and rights protection; It was revised for the third time on February 27th, 2008, and the revised Patent Law came into effect on October 27th, 2009, which mainly improved the patent authorization standard, strengthened the protection of the patentee, introduced the defense against the existing technology, and further coordinated with international conventions.