The registered trademark is valid for 10 years. Registered trademark after the expiration of the need to continue to use, it should be six months before the expiry of an application for renewal of registration. In this period failed to submit an application, as well as the six-month grace period. Spread application has been filed during the period, after the expiration of the trademark will be canceled. And Trademark Office review of applications for renewal of registration, issuance of the renewal of trademarks that are no longer issuing a separate trademark registration, trademark registration certificate and renewal of trademarks to prove with the use. 
 A renewal book format 
 1, an application for renewal of trademark registration certificate copy; 
 2, copy of business license / ID card copy of natural persons (foreigners need to provide my passport and a Chinese translation); 
 3, seal or signature of the "Power of Attorney" original in duplicate. 
 4, the renewal of trademark application for registration in duplicate. 
 Second, for the application for the three steps 
 (A) to prepare the application form 
 1, in accordance with the requirements on the application one by one to fill in, and must be typed or printed. 
 2, each a trademark shall submit the renewal application for registration of a. 
 3, an application for renewal of a trademark for a total of trademarks, the name of the representative to apply. 
 (B) submit an application 
 Entrusts a trademark agency to carry out the application to the trademark agency service of the Trademark Office. 
 Third, the processing time: According to the analysis of the review of the progress of the State Trademark Bureau, the whole process needs about six months time. 


 The letter then, Shenzhen City Intellectual Property Agency Co., Ltd. is a licensed trademark agency formally approved by the State Administration for Industry and State Trademark Bureau, mainly engaged in domestic and international trademark registration, patent applications, double soft certification, the national high-tech enterprises to apply knowledge property rights proxy transaction. I graduated by the number of the legal profession, and years of agency experience in trademark, patent agents and lawyers, the Secretary for one accustomed to adhering to a serious, rigorous, modest style, the use of a solid foundation for legal theory and agent practical experience, for customers to solve intellectual property problems, and professional recommendations to help customers gain the upper hand in the intellectual property strategy.