The time required for patent application varies depending on the type of patent and the examination process.For an invention patent application, it generally takes about one to three years. The examination process includes preliminary examination and substantive examination. During the substantive examination stage, there may be multiple responses to examination opinions, which is relatively complex and time-consuming.A utility model patent usually takes around six to twelve months. The main examinations are formal examination and a relatively simple novelty examination.A design patent generally takes about six to night months. The focus of the examination is on the novelty and uniqueness of the appearance.However, these time frames are only approximate. The actual application process may be lengthened or shortened due to various factors.