Legal analysis: after the company name is changed, the trademark change is generally handled within one month. Where the registered items are changed, the trademark registrant shall file an application for change and shall not change the registered items without authorization. A company may change its trademark by itself or entrust a trademark agency established according to law to change its trademark.

Legal basis: Trademark Law of People's Republic of China (PRC).

Article 18 When applying for trademark registration or handling other trademark matters, you can handle it yourself or entrust a legally established trademark agency to handle it. If a foreigner or foreign enterprise applies for trademark registration and handles other trademark matters in China, it shall entrust a legally established trademark agency to handle it.

Article 41 Where a registered trademark needs to change the name, address or other registered items of the registrant, an application for change shall be filed.