Hello, Bingyi Intellectual Property has the answer for you: After successful trademark registration, there is no need for annual review, but what you need to know is that after successful trademark registration, it needs to be renewed. Generally, the validity period of a trademark is 10 years. If the trademark is not renewed upon expiration, there will be a six-month extension period. If the extension period is over and the extension is not renewed, the trademark will become invalid.

Hope this helps you.