1. Mailing method The requester can submit the reexamination request documents by mail at China National Intellectual Property Administration Patent Office, No.6, West Tucheng Road, Jimenqiao, Haidian District, Beijing, with the postal code of 100088.
2. The face-to-face requester may submit the reexamination request document to the reception hall of the Patent Office. The invalidation office of the Patent Office has a window for invalidation business in the reception hall of China National Intellectual Property Administration Patent Office, and the address is the reception hall of China National Intellectual Property Administration Patent Office, No.6, Xitucheng Road, Jimenqiao, Haidian District, Beijing.
3. The electronic submission requester can log in to the China patent electronic application system and submit the reexamination request file using the reexamination invalid electronic request module.