Are the examiners of patent substance part-time or professional? Why did he have nothing to say in the process of replying to my patent, but he still rejected my patent?

First of all, the examiners in the substantive examination stage of invention patents are all professionals, including those in the preliminary examination stage, who are not part-time examiners. Each examiner is a full-time employee of China National Intellectual Property Administration Patent Examination Cooperation Center or its subordinate units (the staff of which are civil servants). Therefore, don't doubt that the examiner is not a professional, no different from the place where he works. Patent examination is a legal work, the examination is not meticulous and strict, and the examination opinions are made casually. First of all, it will not pass the examination of the bureau, and the examiner and China National Intellectual Property Administration, as legal departments, will bear corresponding legal responsibilities.

Then, the patent was rejected not because the examiner had nothing to say, but because there was no need to speak. There are two of the four review principles, the hearing principle and the procedure saving principle. Since it was rejected, you should be given at least one opportunity to state your opinions (the first notice of review). If you don't give a targeted reply to this opinion statement, or the targeted reply is not recognized by the examiner, then the examiner can follow the facts listed in the first review notice.

Finally, I guess you should apply for the patent yourself, not entrust a special agency. Personally, I suggest that applying for a patent is a relatively professional technical labor, and professionals should be invited to help. If you think the patent agency offers a higher price, you can also ask a professional to write it for you and then apply for it yourself. It is worthwhile to make a little effort. How to reply to the evaluation opinions in the later stage should also be consulted by professionals. In this line, there are examiners, patent agents and so on, but there are no such acquaintances. The network is so developed and convenient that it can also be found through the network.