For the public, pre-publicity can guide units or individuals who are or intend to develop the same or similar products or methods, remind them that the research content belongs to the existing technology, avoid repeated research and development, and give them technical guidance to help them develop more advanced products or technologies on the existing technology.
For the applicant, early disclosure and delayed examination can give the applicant sufficient time to investigate and study whether his patent application is worthy of further examination and authorization, thus saving costs.
There is no so-called instability in the published invention patent application, because no product or method can be novel from the date of filing. Finally, if the applicant wants to end this state, he can also make a request for substantive examination in advance at any time after publication, so as to obtain authorization as soon as possible.