According to Article 52 of the Trademark Law, any of the following acts is an infringement of the exclusive right to use a registered trademark:

(2) Selling goods that infringe the exclusive right to use a registered trademark "stipulates that counterfeit goods sold by enterprises and self-employed households, whether they know it or not, constitute infringement of the exclusive right to use a registered trademark.

However, according to the third paragraph of Article 56 of the Trademark Law, "if you sell a commodity that you don't know is an infringement of the exclusive right to use a registered trademark, you can prove that the commodity was legally obtained by yourself and explain it to the provider, and you will not be liable for compensation.

This emphasizes a right to know, as long as it is proved that we bought the goods through legal channels without knowing it, even if the goods sold are fakes, we do not need to bear the liability for compensation. Therefore, when purchasing goods at ordinary times, you must keep the purchase invoices, purchase orders, payment vouchers, transfer records, etc. , and can tell the name, name and residence of the seller of the goods or provide other clues, which are verified by investigation.