The null verification code on the Patent Query Network may be caused by a variety of reasons. The following are some suggestions, I hope they can help you solve the situation where the verification code is null:
1. Refresh the page:
Try to refresh the patent query website page, and then re-enter the verification code. Occasionally, the display of the verification code may be affected by page loading or network connectivity.
2. Check the network connection:
Make sure your device is connected to a stable Internet and there are no network issues. A weak or unstable network connection may prevent the verification code from loading.
3. Use other browsers:
Try to use different web browsers to access the patent search website to see if the verification code is displayed in other browsers. Sometimes browser compatibility issues can cause such situations.
4. Clear cache and cookies:
Clear the browser cache and cookies, and then reload the page. Stored old data may cause the verification code to display abnormally.
5. Check website notifications:
Check whether the patent search website has issued notices or announcements about verification code display problems. Occasionally the website may experience technical problems and information may have been released.
6. Contact Patent Query Network support:
If the above methods do not solve the problem, it is recommended to contact the technical support team of Patent Query Network. They may be able to provide more specific help and solutions.
If the problem persists, please consider following the guidance provided by the patent search website in resolving the problem or contacting its technical support for further assistance.
The above content is carefully compiled by Zhubajie.com. I hope it will be helpful to you.