Patent application documents can be submitted directly to the Patent Office, or they can be mailed by registered mail through the post office. Application documents are generally not allowed to be folded, and should be mailed by registered mail in an envelope that can fit A4 paper. But the best way is to send it by "Express Mail" through the post office.

Address of the National Patent Office of the China Intellectual Property Office:

(100088) No. 6, Tucheng Road, Jimenqiao West, Haidian District, Beijing

Submit patent application documents or Registered mail by post office to: Patent Acceptance Office of China Patent Office

Patent fees should be submitted directly or mailed by post office to: Fee Management Office of China Patent Office

Address of State Intellectual Property Office: Beijing No. 6, Xitucheng Road, Haidian District (northeast corner of Jimen Bridge, North Third Ring Road) Postal Code: 100088 Tel: 62093114