How long is the validity of the utility model?

How long is the validity period of the utility model 1? The patent right obtained according to the patent application before 19921February 3 1 is protected by the original patent law, that is, the protection period of the invention patent is 15 years from the date of application; The term of protection of utility model patents and design patents is five years from the date of application, and the patentee may apply for renewal three years before the expiration. 2. After 1 993 1 month1day, the protection period of the patent right obtained according to the patent application is applicable to the revised patent law, that is, the protection period of the invention patent is 20 years from the date of application; The protection period of utility model patent and design patent is 10 year from the date of application. Reasons for utility model 1 patent. The reason why the state protects utility models is to encourage small inventions with low cost and short development cycle to meet the needs of economic development more quickly. But this does not mean that only small inventions can apply for utility models, and other highly creative inventions can also apply for utility models as long as they meet the protection objects of utility models. 2. Because the time period of invention patent authorization is generally as long as 2-3 years, the requirements are high and it is difficult to pass the examination. In order to enable the patentee to obtain authorization quickly, a patent for utility model is established. After the patent right is granted first, if there is a patent infringement dispute, the corresponding substantive examination procedure will be started, including the evaluation of the practicality, novelty and creativity of the patent right. Can save a lot of review resources.