Legal analysis: knowingly selling goods that infringe the exclusive right to use a registered trademark also constitutes infringement of the exclusive right to use a registered trademark. At the same time, the law stipulates that if the infringer doesn't know and can prove that the goods were legally obtained by himself and explain the supplier, the administrative department for industry and commerce shall order him to stop selling. Uninformed infringers also need to bear the tort liability of stopping selling the product and providing purchase channels to assist in investigating the source of fake and inferior products. 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.

Legal basis: Trademark Law of People's Republic of China (PRC).

Article 57 Any of the following acts is an infringement of the exclusive right to use a registered trademark:

(1) Using the same trademark as its registered trademark on the same commodity without the permission of the trademark registrant;

(2) Without the permission of the trademark registrant, using a trademark similar to its registered trademark on the same kind of goods, or using a trademark identical with or similar to its registered trademark on similar goods is likely to cause confusion;

(3) selling goods that infringe upon the exclusive right to use a registered trademark;

(4) Forging or unauthorized manufacturing of registered trademark marks of others or selling forged or unauthorized registered trademark marks;

(five) without the consent of the trademark registrant, the registered trademark is changed and the goods with the changed trademark are put on the market again;

(6) Deliberately facilitating the infringement of the exclusive right to use a trademark of others and helping others to commit the infringement of the exclusive right to use a trademark;

(seven) causing other damage to the exclusive right to use a registered trademark of others.

Article 60 If one of the acts listed in Article 57 of this Law infringes on the exclusive right to use a registered trademark and causes disputes, the parties concerned shall settle them 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).

Article 61 The administrative department for industry and commerce has the right to investigate and deal with violations of the exclusive right to use a registered trademark according to law; Suspected of committing a crime, it shall be promptly transferred to judicial organs for legal treatment.