Legal analysis: the limitation of action for infringement of the exclusive right to use a registered trademark is 3 years, counting from the date when the trademark registrant or interested party knows or should know about the infringement. If the trademark registrant or interested party files a lawsuit for more than three years, and the infringement is still going on when the lawsuit is filed, the people's court shall order the defendant to stop the infringement within the validity period of the exclusive right to use a registered trademark, and the amount of infringement damages shall be counted forward for three years from the date when the obligee files a lawsuit with the people's court. The limitation period for requesting protection of civil rights from the people's court is three years. Where there are other provisions in the law, those provisions shall prevail. The limitation period of action shall be counted from the date when the creditor knows or should know that the right is damaged and the debtor knows it. Where there are other provisions in the law, those provisions shall prevail. However, the people's court shall not protect the rights that have been damaged for more than 20 years. Under special circumstances, the people's court may decide to extend the time according to the application of the obligee.

Legal basis: Article 188 of the Civil Law of People's Republic of China (PRC) requests the people's court to protect civil rights, and the limitation of action is three years. Where there are other provisions in the law, those provisions shall prevail. The limitation period of action shall be counted from the date when the creditor knows or should know that the right is damaged and the debtor knows it. Where there are other provisions in the law, those provisions shall prevail. However, the people's court shall not protect the rights that have been damaged for more than 20 years. Under special circumstances, the people's court may decide to extend the time according to the application of the obligee.