According to relevant laws and regulations, the right of priority is valid for six months. Within six months from the date when the design is first applied for patent abroad, if the patent applicant applies for a patent on the same subject in China, the application People have priority within this period.
Legal Basis
Article 29 of the Patent Law of the People's Republic of China
The applicant's self-invention or utility model is the first in a foreign country If, within twelve months from the date of filing the first patent application for a design in a foreign country, or within six months from the date of first filing a patent application for a design in a foreign country, another patent application for the same subject is filed in China, the foreign country shall file a patent application for the same subject matter in accordance with the contract signed between the foreign country and China. Priority may be enjoyed in accordance with an agreement or an international treaty to which both countries are party, or in accordance with the principle of mutual recognition of priority.