1, collecting and preserving evidence; The law stresses "based on facts". When infringement is found, the first thing to do is to collect and preserve evidence, and fix the goods infringed by others by taking photos, videos and buying in kind. If necessary, notarize the evidence, and at the same time conduct as much investigation and evidence collection as possible on the sales of the other party's products. 2. Send a lawyer's letter to the other party; 3. Communicate and negotiate with each other; In case of any dispute arising from infringement of the exclusive right to use a registered trademark as stipulated by law, the trademark registrant or interested party may settle it through consultation with the infringer. If the other party's infringement is not serious and willing to settle it through consultation, both parties can settle the infringement facts and infringement compensation through consultation. 4. Bring a lawsuit to the court of the infringing place. Article 60 of the Trademark Law commits one of the acts listed in Article 57 of this Law, infringing on the exclusive right to use a registered trademark and causing disputes, which shall be settled by the parties through consultation; Unwilling to negotiate or failing to negotiate, the trademark registrant or interested party may bring a lawsuit to the people's court or request the administrative department for industry and commerce to handle it. When the administrative department for industry and commerce finds that the infringement is established, it shall be ordered to immediately stop the infringement, confiscate and destroy the infringing goods and tools mainly used to manufacture infringing goods and forge registered trademarks. If the illegal business amount is more than 50,000 yuan, a fine of less than five times 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 250,000 yuan may be imposed. Whoever commits trademark infringement twice or more within five years or has other serious circumstances shall be given a heavier punishment. The administrative department for industry and commerce shall order the sale of goods that are not known to infringe the exclusive right to use a registered trademark, and can prove that the goods are legally obtained by themselves, indicating the supplier. If there is any dispute over the amount of compensation for infringement of the exclusive right to use a trademark, the parties concerned may request the administrative department for industry and commerce for mediation, or bring a suit in a people's court in accordance with the Civil Procedure Law of People's Republic of China (PRC). After mediation by the administrative department for industry and commerce, if both parties fail to reach an agreement or fail to perform the mediation after it takes effect, the parties may bring a lawsuit to the people's court in accordance with the Civil Procedure Law of People's Republic of China (PRC).