Please tell me, my patent has expired without paying the annual fee. Can I still renew it now?

It depends on the specific situation. Generally, you can make back payment within 6 months and pay a late fee of 25%.

For more than 10 months (usually 2 months after receiving the notice of patent termination) Within), you can request to restore your rights. At this time, you will need to pay a fee of 1,000 yuan for the restoration of rights, an annual fee, and a late payment fee of 25%.