Why should the invention patent be made public?

The purpose of this should be to use the power of the public to examine patent applications. After the patent application is published for a period of time, the Patent Office will conduct a formal review of the patent application, such as whether the patent claim is clear, whether the specification is fully disclosed, whether the invention has three characteristics, and whether there is oneness between multiple inventions in the same application. After the application meets the above requirements, it can be authorized.