Answer: If the trademark has expired and has not been renewed, the trademark will be invalid. If you want to get it back, you must try to register it again. If no one has registered it, there is still hope. If a trademark has expired and needs to be renewed, the National Trademark Office charges a fee of 2,000 yuan. If the trademark has not been renewed after the expiration, it must be renewed within a 6-month extension period. The Trademark Office fee is 2,500 yuan. Trademark renewal requires the certification of the trademark registrant, which is a copy of the original registrant's company business license or personal ID card and a copy of the trademark registration certificate. It is more convenient to find an agency for these, and the agency fee is about 300-500.