1. Reason for restriction: The effective time of the substantive examination of the invention patent is 12 months. You haven't received any inspection for more than 12 months. You can try to contact CNIPA China National Intellectual Property Administration or your patent examination department for details.
2. Force Majeure: Due to various factors, the audit time will be extended. If the audit time exceeds the standard time, contact the local bureau in time to understand the specific situation.