1, trademark renewal on time In China, the service life of a registered trademark is 10 years, and it is necessary to apply for trademark renewal in the first six months of ten years. If there is an emergency and the trademark is not renewed during the renewal period, you can choose to renew the trademark within a grace period of three months after the expiration, otherwise you will lose the right to use and exclusive use the trademark. 2. Keep in mind the principle of trademark revocation that has not been used for three years. China's Trademark Law stipulates that any organization or individual has the right to apply to the Trademark Office for the cancellation of a trademark. However, if it is caused by special circumstances, you can choose to submit an explanation to the Trademark Office, and you can get another three months after the expiration of three years. Unused trademarks can also be assigned. 3. Pay attention to trademark protection to prevent trademark infringement by others. Ignoring some trademark infringements is undoubtedly a bomb to the development of our company. I wonder when it will explode. So we must pay attention to the maintenance of the exclusive right to use trademarks. Prevent others from infringing the trademark in any improper way. Trademark infringement includes: (1) using the same trademark as its registered trademark on the same commodity without my permission; (2) Without the permission of the trademark registrant, using a trademark similar to its registered trademark on the same kind of goods, or using a trademark identical with or similar to its registered trademark on similar goods is likely to cause confusion; (3) selling goods that infringe on registration; (4) Forging or unauthorized manufacturing of registered trademark marks of others or selling forged or unauthorized registered trademark marks; (five) without the consent of the trademark registrant, the registered trademark is changed and the goods with the changed trademark are put on the market again; (6) Deliberately facilitating the infringement of the exclusive right to use a trademark of others and helping others to commit the infringement of the exclusive right to use a trademark; (seven) causing other damage to the exclusive right to use a registered trademark of others. 4. When the trademark registration information changes, the trademark shall be changed. If the name, address or other registered items of a trademark registrant change after the trademark is approved for registration, it shall apply to the Trademark Office for the corresponding change procedures. Article 49 Where a trademark registrant changes the registered trademark, the registrant's name, address or other registered items by himself in the process of using the registered trademark, the local administrative department for industry and commerce shall order it to make corrections within a time limit; If it fails to make corrections within the time limit, its registered trademark shall be revoked by the Trademark Office.