The patent documents of international applications should be made public, and there will be a number when they are made public, which can be inquired in PCT or WIPO system.
When an international application enters a country or region, it will be reviewed according to the patent-related laws of that country or region, or it may enter the public stage of that country or region. At this time, there will be a WeChat official account on the official website of the patent administration department of that country or region.
For example, if a patent application in China is for a utility model or a design patent, it will be announced when the patent is granted, and there will be an open number at this time. If it is an invention patent, it will be published before the substantive examination, and there will be an open number at this time. The authorization text will be published when the invention patent is authorized, and there will be an open number at this time.
As for the authenticity of WeChat official account, the simplest thing is to go to the corresponding official website to check whether there are corresponding patent application documents.