Hello, the National Copyright Office and Trademark Office are queried through the National Information Network.

Trademarks are managed by the Industrial and Commercial Bureau, while the Intellectual Property Office only manages patents. The Intellectual Property Office only deals with patents, etc., and other matters only play a coordinating role in foreign affairs. Copyrights are with the Copyright Office, and trademarks are with the Industry and Commerce Bureau. At present, the main intellectual property agencies are the Copyright Office, the Trademark Office, and of course the Patent Office, which cannot be searched through the national information network.