I. How many years is the validity period of a registered trademark According to the provisions of China's Trademark Law, the validity period of a registered trademark is ten years, counting from the date of approval. You can renew it six months before the expiration of the validity period and pay the renewal fee. Each renewal is still valid for ten years. There is no limit to the number of renewals. If no application is made within this time limit, it can be extended for 6 months. Second, how to renew the trademark after it expires? After the expiration of the validity period of a trademark, a trademark agency may be entrusted to file a record with the Trademark Office or directly renew the trademark in the trademark registration hall of the Trademark Office. Prepare the application documents, submit the application documents and pay the renewal fee. There are three steps to handle the application: (1) Prepare the application documents, and the application documents to be submitted are: (1) Trademark renewal registration application. (2) the applicant's identity certificate (copy). (3) Submit the power of attorney of the entrusted agent. (4) a copy of the registration certificate. (5) If the application documents are in a foreign language, a Chinese translation signed and confirmed by the translation agency shall also be provided. (2) Submit the application form 1. If the applicant goes directly to the trademark registration hall, after the application form is ready, submit it at the acceptance window of the trademark registration hall, and the staff at the window will confirm whether the application form is qualified. 2. Where a trademark agency is entrusted, the trademark agency shall serve the application to the Trademark Office. (3) Payment of renewal fee.