Legal analysis: Trademark infringement can be complained to the Trademark Management Office of the Municipal Administration for Industry and Commerce or the Trademark Advertising Contract Management Section of the Industrial and Commercial Branch, or a lawsuit can be brought to the people's court.

Legal basis: Article 51 of the Trademark Law of People's Republic of China (PRC) violates the provisions of Article 6 of this Law, and the local administrative department for industry and commerce shall order it to apply for registration within a time limit. If the illegal business amount is more than 50,000 yuan, a fine of less than 20% of the illegal business amount may be imposed; if there is no illegal business amount or the illegal business amount is less than 50,000 yuan, a fine of less than 1 10,000 yuan may be imposed.