Article 39  The period of validity of a registered trademark shall be ten years, starting from the day the registration is approved.
 

Article 40  When it is necessary to continue using the registered trademark upon expiration of period of validity, an application for renewal shall be made within 12 months before the expiration. If such an application cannot be filed within that period, an extension period of six months may be granted. The period of validity for each renewal of registration shall be ten years as of the next day of the previous period of validity. If the formalities for renewal have not been handled upon expiration of period of validity, the registered trademarks will be deregistered.
The Trademark Office shall announce the registered trademarks for renewal.
 

Article 41  An application for alteration shall be filed if the name, address or the other registered matters of the registrant is required to be altered.
 

Article 42  In case of assignment of registered trademark, the transferor shall sign a transfer agreement with the transferee and jointly file an application with the Trademark Office. The transferee shall guarantee the quality of the goods on which the trademark is used.
For assignment of registered trademarks, the trademark registrant shall assign similar trademarks on the same goods or the same or similar trademarks on similar goods.
The Trademark Office shall not approve assignment of registered trademarks that may easily lead to confusion or other adverse effects, and notify the applicant in writing stating reasons thereof.
The assignment of a registered trademark shall be published after it has been approved. The transferee enjoys exclusive right to use the trademark as of the date of announcement.
 

Article 43  The trademark registrant may, by concluding a trademark licensing contract, authorize other persons to use the registered trademark. The licensor shall supervise the quality of the goods on which the licensee uses the licensor's registered trademark, and the licensee shall guarantee the quality of the goods on which the registered trademark is used.
The party authorized to use others' registered trademark shall indicate the name of the licensee and the place of origin on the goods that bear the registered trademark.
When granting others to use the registered trademarks, the licensor shall file the license of the trademarks with the Trademark Office for records, which shall announce the same. Without putting the licensing of the trademark on records, the trademark shall not be used to defend the bona fide third party.