What happened to the patent examination opinions? How to avoid it?

What happened to the patent examination opinions? Before you know the patent examination opinions, you need to know the patent application process, because if you tell us the patent examination opinions directly, friends who don't know the patent application process may be confused; The process of patent application focuses on invention patent application: patent application, acceptance, preliminary examination, substantive examination, authorization and issuance of certificates; If it is a utility model patent or an appearance patent, the substantive examination link can be omitted in the middle. What will happen to the patent examination opinions? What are the reasons for the patent examination opinions? For example, if the patent application documents do not conform to the relevant provisions of the Patent Law or the detailed rules for the implementation of the Patent Law, the examiner will issue a notice of examination opinions, and the applicant shall state his opinions on the defects or problems pointed out by the examiner or modify the application documents accordingly. If no reply is made within the time limit, the patent application shall be deemed to have been withdrawn. In the process of patent application examination, the applicant may receive notice of examination opinions many times. The reply to the notice of examination opinions will directly affect the process and result of patent application. If the defects or problems still exist after repeated statements or amendments, the patent application will be rejected. The time limit for the first reply to the notice of review opinions is 4 months, and then 2 months at a time. When calculating the time limit, 15 days will be added, and 15 days will be the estimated arrival time. So a phone call is 15 days plus 4 months, and Zhongtong is 15 days plus 2 months. Therefore, we can learn from it that patent examination opinions actually occur in two links: preliminary examination and substantive examination. If it is an invention patent, it may go through two review opinions, while the other two patents will only occur in the preliminary examination; Of course, there are not only one or two patent examination opinions, but also more than two; It is suggested that the patentee apply for a patent through an agency to avoid too many patent examination opinions.