How to start the substantive examination procedure of invention patent application

Before an application for a patent for invention is granted a patent right, it must undergo substantive examination (that is, examination of its novelty, creativity and practicality). The substantive examination is generally not initiated by itself and requires the applicant to make a request. Within three years from the date of application, or if priority is claimed, the applicant may make a request for substantive examination of his application at any time; Otherwise, the application is deemed to be withdrawn. Where an application for a patent for invention is filed in a foreign country, the applicant shall, when requesting substantive examination, submit the search report or examination results of one or two major national patent offices for examining his application; Such as the European Patent Office, the United States Patent Office or the Japanese Patent Office. According to experience, it is limited to submitting retrieval reports and examination results, and it is not necessary to submit documents cited in retrieval reports and examination results unless required by the Patent Office.