I would like to ask you, what is the priority application in the patent? What is object-oriented?

The so-called priority generally means that the same application has been filed with the Patent Office of PCT allies or other patent offices within one year before the application date, so the latter application can enjoy priority, and its application date can be regarded as the same as that of the previous application.

For details, please refer to Article 29 of the Patent Law: Article 29 Where an applicant applies for a patent for invention or utility model in China within 12 months from the date when a foreign country applies for a patent for the first time, or within 6 months from the date when a foreign country applies for a patent for design for the first time, he may enjoy the priority according to the agreement signed between the foreign country and China, the international treaties to which both countries are parties or the principle of mutual recognition of priority.