Trademark is a special legal term. A brand or a part of a brand is called a "trademark" after it is registered by the relevant government departments according to law. Trademarks are protected by law, and registrants enjoy exclusive rights. Famous trademarks in the international market are often registered in many countries. There are "registered trademarks" and "unregistered trademarks" in China. Registered trademarks are trademarks protected by law after being registered by relevant government departments, while unregistered trademarks are not protected by trademark law. A registered trademark has a term of use. According to the relevant provisions of the Trademark Law, the validity period of a registered trademark is ten years, counting from the date of approval of registration. In addition, Article 40 of the Trademark Law of People's Republic of China (PRC) also stipulates that if a registered trademark needs to be used after its expiration, the trademark registrant shall go through the renewal procedures in accordance with the regulations within 12 months before its expiration; If it has not been handled during this period, it can be extended for six months. The validity period of each renewal registration is ten years, counting from the day after the last expiration of the trademark. If the renewal formalities are not completed at the expiration of the period, the registered trademark shall be cancelled. Legal basis: Article 39 of the Trademark Law of People's Republic of China (PRC). The period of validity of a registered trademark is ten years, counting from the date of approval of registration.