Domestic priority-inventions and utility models 12 months; Design has no priority in China.
An applicant who files an application for a patent for invention or utility model with the Patent Office on the same subject within 12 months from the date when he first filed a patent application in China may enjoy priority. That is, the date of the first application in China is the date of application.
If the filing date of two patent applicants is the same day, both parties shall negotiate. If negotiation fails, the Patent Office will reject all of them and will not grant the patent right.