May 8, 2026 — To further enhance the convenience of international trademark opposition filings, the China National Intellectual Property Administration (CNIPA) officially launched its online filing system for international trademark oppositions today.
Effective immediately, trademark agencies and domestic opposition applicants can log into the CNIPA online trademark application service system and handle relevant matters online through the “International Trademark Application – International Opposition” section.
The system offers comprehensive functions and supports fully electronic processing, including:
- Submission and withdrawal of opposition applications
- Obtaining copies of opposition materials, filing and managing defenses
- Submitting corrections and supplementary evidence
- Changing the international opposition agent
- Online payment and receipt of electronic notifications
The launch of this system will significantly simplify international opposition procedures, effectively improve examination efficiency, and provide more convenient and efficient service support for trademark holders seeking to protect their rights overseas.