Query method
1. Enter the trademark system and find "Patent Examination Information Inquiry" in the column to enter.
2. Skip to this page. Click to enter the query.
3. Enter the patent number
Note: The system adopts accurate inquiry, and the invention name, application number and applicant in the inquiry conditions must be filled in.
The input application number/patent number must be 9 digits or 13 digits, and the letter "ZL" is not required, nor can it contain "."
4. Click Query to get the results with patent types shown in the lower left corner, as shown in the above figure.