2. Preliminary examination: It is easier to examine the formal content, such as whether the document is complete, whether it is the object of patent protection, whether the format meets the requirements and whether it is novel (new and newly added preliminary examination content) ... Generally speaking, it is easier than invention authorization. Do not meet the requirements, issued a notice of correction or review comments, the applicant needs to reply and make the necessary changes. If the utility model and appearance meet the requirements of preliminary examination, a notice of authorization and a notice of registration shall be issued, waiting for the applicant to pay the fee. After receiving the fee, the patent certificate will be issued to the applicant, and the application procedure will end. 3. Substantive examination: After entering the actual examination procedure, the examiner will search any relevant technologies that TA can search globally before the application date, so as to evaluate the novelty, creativity and practicality of the application ... and a series of other inspection items that need to be carried out in the actual examination procedure.
4. Factors affecting the progress of the examination: the quality of the patent application documents, the speed of replying to the notice, whether it is required to be disclosed and examined in advance, and whether the applicant applies for speeding up the examination (the last two items are only applicable to inventions).