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How to inquire about patent certificate
This patent is real and can be found on cpquery.sipo.gov.cn's website. However, it has become invalid due to the failure to pay the annual fee, which is an invalid patent. If someone uses it for publicity or promotion, it is cheating.

On the premise of knowing the patent number, the method of querying the patent is as follows:

The first step is to log in to cpquery.sipo.gov.cn.

Step 2: Click "Click Enter" under "Public Inquiry" to enter the following page:

Step 3: Select "Agree with the above statement", and then click "Continue" to enter the inquiry page.

Step 4: Enter the patent number in the column of "ApplicationNo./PatentNo." and click "Query".

Please note that the first letter ZL and "."should not be entered, and the last digit should not be entered.

Step 5, the page jumps, and the information of the patent appears.

Step 6, click "Application Information", and information such as the applicant, inventor and patent status of the patent will appear:

Judging from the situation of this case, the unpaid annual patent fee is invalid.

Cpquery.sipo.gov.cn is the "China and Multinational Corporations Patent Examination and Inquiry" system of the Patent Office of the Intellectual Property Office of the State Administration of Market Supervision.

Through this website, you can check the patent status, understand the progress of patent application and view the patent application documents. There are many ways to query, including by applicant, by patent number, inventor, etc.