2. After the materials are prepared, they can be sent directly to the national patent, to the local agency of the State Patent Office (usually contact the local provincial patent office, and the specific address can be found on the website of the State Patent Office), and of course they can also be mailed to the State Patent Office (China National Intellectual Property Administration Patent Office receives No.6, West Tucheng Road, Jimenqiao, Haidian District, Beijing, 10088).
Don't pay the fee in a hurry, the patent office will accept it for free. After receiving the admission notice and payment notice, pay the examination fee according to the regulations. There are still two months after receiving these notices.