What is an invention patent application?

This is a specification published according to China's Patent Law 1985, which has been examined in substance (patentability) and has not been granted a patent right. 1985 patent law stipulates that within three years from the date of filing, the patent office may, upon the request of the applicant at any time, conduct substantive examination of the application. If it actually passes the examination, it shall be examined and approved, and the explanation of examination and approval of the application for a patent for invention shall be announced and published. What are the criteria for examination and approval of invention patent applications? The objection period is within three months from the date of announcement. If there is no objection or the reason for objection is not established at the expiration of the period, the patent application will be authorized. In order to reduce repeated publication, patent specifications are generally not published. 1993 the patent law canceled the objection procedure, and the examination and approval instructions of the invention patent application also stopped being published. Charter bulletins published by Japan also belong to this category.