Trademark registration is valid for 10 years, starting from the date of registration. The renewal registration period is also 10 years. The renewal application can be submitted within 1 year before the registration validity period expires, and there will be a grace period of 6 months after the deadline, but a penalty must be paid. The documents required for renewal applications are the same as those for registration applications, but for renewals under the Compulsory Registered Trademark Law, additional documents required for registration are not required for renewal.