You can obtain the acceptance notice issued by the Patent Office on the day of application. Different types of patents require different review times: For appearance patents, it takes about seven or seven days from application to obtaining the authorization notice issued by the Patent Office. About eight months later, if the patent document does not meet the requirements and needs to be corrected, you will receive a notice of correction about five months from the filing date. It takes about one year from application to obtaining the authorization notice issued by the Patent Office for a utility model patent. If the patent document does not meet the requirements and needs to be corrected, you can receive the notice of correction approximately eight months after the application. It takes about half a year from the application for an invention patent to the notification of passing the formal examination. If corrections are needed, you can receive the notification of corrections around this time. The time to obtain the authorization notice issued by the Patent Office varies depending on the field covered by the patent. It is usually three and a half to four and a half years after the filing date.