Legal analysis: It depends. 1. If this trademark is registered by yourself, both the trademark assignor and the trademark assignee shall sign an assignment agreement and apply to the Trademark Office together. 2. If the trademark is not registered by yourself, you need to make a notarial certificate at the local notary office to prove that the signature of the trademark transfer procedure is the applicant himself.

legal basis: article 42 of the trademark law of the people's Republic of China? Where a registered trademark is assigned, the assignor and the assignee shall sign an assignment agreement and file an application with the Trademark Office. The transferee shall guarantee the quality of the goods using the registered trademark.

where a registered trademark is transferred, the trademark registrant shall transfer the similar trademark registered on the same commodity or the same or similar trademark registered on similar commodities.

the trademark office will not approve the transfer that may easily lead to confusion or have other adverse effects, and notify the applicant in writing and explain the reasons.

after the transfer of a registered trademark is approved, it shall be announced. The transferee shall enjoy the exclusive right to use the trademark from the date of announcement.