Article 9 of the Trademark Law stipulates that a trademark applied for registration shall have distinctive features and be easy to identify, and shall not conflict with the legal rights previously obtained by others. It can be seen that the trademark applied for registration shall not conflict with the legal rights previously obtained by others. For the applicant, the law does not prohibit multiple applications for the same or similar trademarks, otherwise there will be no provision in Article 42 of the Trademark Law that "if 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 together". Anyone other than the applicant for a registered trademark shall not conflict with the applicant's registered trademark. It can be clearly understood from the above that it will be illegal to continue to use the trademark after the expiration of the license contract. When you find that the trademark license contract expires, you must communicate with the trademark designer again and decide whether to continue to use it or give it up. From the designer's point of view, if the merchant continues to use the trademark after the contract expires, the designer can legally bind it through legal channels.