Legal basis:
Article 28 of the Patent Law stipulates that the date when the patent administrative department of the State Council receives the patent application documents shall be the filing date. If the application documents are mailed, the postmark date of mailing shall be the application date.
Article 42 of the Patent Law stipulates that the term of the invention patent right is 20 years, and the term of the utility model patent right and the design patent right is 10 years, counting from the date of application.