The limitation of action for trademark infringement is three 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.

Legal basis:

Article 18 of the Supreme People's Court's Interpretation on Several Issues Concerning the Application of Laws in the Trial of Trademark Civil Disputes states that the limitation period for infringement of the exclusive right to use a registered trademark is three years, counting from the date when the trademark registrant or interested party knows or should know that the right has been damaged and informs the obligor. 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.