How long is the patent protection period?

The term of patent protection is twenty years. According to the query in Article 42 of the Patent Law of People's Republic of China (PRC), the term of the invention patent right is 20 years, the term of the utility model patent right is 10 year, and the term of the design patent right is 15 year, all of which are counted from the date of application. The meaning of patent in intellectual property rights: 1. Patent right means that the patentee enjoys the exclusive right to use his invention and creation for a certain period of time after applying in accordance with legal procedures and being examined and approved by the statutory authorities. In this heavy sense, the emphasis is on rights, which is an exclusive right, exclusivity and exclusivity. Without authorization, others have no right to exploit their own patents. Second, patented technology. That is, inventions protected by the patent law refer to original proprietary technologies and inventions that are recognized by the state and protected by law on the basis of openness; Third, patent certificates and patent documents. Refers to the official document issued by the Patent Office that can confirm the applicant's patent right for his invention-creation, or the patent document that specifically records the content of the invention-creation. This is a specific material document.