The validity period of a trademark in our country is 10 years. Starting from the date of trademark registration, the applicant can apply for renewal 6 months before the expiration of the trademark. This 6-month period is the trademark renewal period. Applicants can also apply for renewal 6 months after the expiration. This period is the extension period of the trademark. However, when applying for renewal procedures during the extension period, a certain additional official fee must be paid to the Trademark Office.
There is no limit on the number of trademark renewals, as long as the applicant is willing to protect his or her brand.