Examination system and protection period of American patents

The American patent examination system and protection period, and the patent agency service specification effectively regulate the American patent agency market. We have a detailed understanding of the American patent examination system and protection period. American patent examination system and protection period American patent examination system and protection period (1) invention patents: American invention patent applications are made public from the filing date or priority date 18 months, and novelty examination and sufficient substantive examination system generally automatically enter substantive examination, and the earliest notice of examination opinions is received from the filing date 1.5 years, and the examination period is about 2.5-3 years. General invention patents are granted in about 3-5 years. The protection period of invention patents and plant patents is 20 years, counting from the date of application. After the invention patent is granted, the time limit for paying the maintenance fee is: the annual fee or maintenance fee must be paid in the third and a half years, the seventh and a half years and 1 1 year and a half from the date of grant, otherwise the patent right will be invalid. After the plant patent is granted, there is no need to pay maintenance fee or annual fee. (2) Design patent: The design patent system in the United States protects some designs, and the scope of protection not only covers the products embodied in the design application document itself, but also can be extended to multiple embodiments with some designs as the design point. The design adopts the substantive examination system, and the general authorization is 1- 1.5 years. The protection period of appearance patent is 14 years, counting from the date of authorization, and there is no need to pay maintenance fee or annual fee after authorization.