What is the examination and authorization process of invention patents?

What is the examination and authorization process of invention patents? China's patent law stipulates that the application for a patent for invention shall be subject to the system of early publication and request examination. So what is the examination and authorization process of invention patents? What is the examination and authorization process of invention patents? First of all, the preliminary examination stage includes the steps of accepting patent applications, collecting patent fees, examining classification and obvious defects, examining formats, and publishing patent applications. Secondly, the substantive examination stage includes the start of the substantive examination procedure, the verification of the application documents, the preparation and retrieval of the substantive examination, the substantive examination and the issuance of the first notice of examination opinions, the applicant's reply, modification and the examiner's continued examination, and the examiner will issue a notice of granting the patent right on behalf of China National Intellectual Property Administration. Finally, the authorization stage includes China National Intellectual Property Administration's two authorization and registration notices, the applicant's registration, China National Intellectual Property Administration's authorization decision, the issuance and registration of patent certificates and the announcement of China National Intellectual Property Administration's decision to grant patent rights. What is the examination and authorization process of invention patents?