Extension of international priority of appearance patent

1 If you want to apply for a patent in a certain country, the current practice can be done through PCT international application.

You can apply for PCT at any time, but after the priority period of 12 months, you can't claim priority when you apply, so when your patent enters the national phase of a country, it may lose novelty (if the same patent you applied for in China has been made public), which may bring trouble to the final authorization of the patent.

The above analysis is a general explanation, and there may be other problems in it that need specific analysis.