Yes, after changing the company name, a trademark change application needs to be submitted to the National Trademark Office. Article 41 of the Trademark Law stipulates: If a registered trademark needs to change the name, address or other registration matters of the registrant, a change application must be submitted. The consequences of not changing. Article 49 of the Trademark Law stipulates: If a trademark registrant changes the registered trademark, the registrant's name, address or other registration matters on his own during the use of the registered trademark, the local industrial and commercial administration department shall order him to make corrections within a time limit; if he fails to make corrections within the time limit, , the Trademark Office will revoke its registered trademark. In addition, the renewal procedures after the trademark expires will not be processed because the registrant of the trademark is the old company name, and after the company name is changed, the original corporate seal is no longer valid. If the company name on the new official seal is inconsistent with the name of the trademark registrant, the trademark renewal application will not be approved.