Legal analysis: Whether to file a case for trademark infringement depends on the profit amount, the quantity of counterfeiting and subjective factors. The amount of illegal business operation is more than 5, yuan or the amount of illegal income is more than 3, yuan; Counterfeiting two or more registered trademarks, the illegal business amount is more than 3, yuan, or the illegal income amount is more than 2, yuan, or other serious situations can be filed.

Legal basis: Article 213 of the Criminal Law of the People's Republic of China

If a trademark identical to its registered trademark is used on the same commodity without the permission of the owner of the registered trademark, it shall be filed for prosecution under any of the following circumstances:

(1) If the amount of illegal business operation is more than 5, yuan or the amount of illegal income is more than 3, yuan;

(2) counterfeiting two or more registered trademarks, with an illegal business amount of more than 3, yuan or an illegal income of more than 2, yuan;

(3) Other serious circumstances.

Article 7 Anyone who knowingly sells goods with counterfeit registered trademarks and is suspected of any of the following circumstances shall file a case for prosecution:

(1) The sales amount is more than 5, yuan;

(2) Not yet sold, with a value of more than 15, yuan;

(3) The sales amount is less than 5, yuan, but the total amount of the sold goods and the value of the unsold goods is more than 15, yuan.