2, "but the date is after the date of prosecution, I wonder if it is valid":
(1) can be used as evidence to prove that you imported the same goods from him before, but the evidence is not particularly strong.
(2) I suggest you go to the supplier again and find an excuse to talk to him about the quantity, price and time of the last batch of goods and secretly record them. If the amount is large, you can also find someone from the notary office to accompany you (don't reveal your identity), or find someone else to accompany you as a witness to prove that you heard what he said.
3. "The store asked me to provide evidence, but the supplier only gave me the product name, not the brand name": In fact, what you want to provide is which supplier your goods come from, that is, just prove that your goods are obtained from legal channels, and you don't know that they are infringing goods, and prove: Who provided you with what products.
4. "Can I sue them?" : Who are you suing? Supplier? But you didn't actually lose. If it has been compensated by the court, you can sue the supplier for recovery after compensation.
5. Tongrentang claims to be a drug? The amount claimed by Tongrentang, no matter how much profit you make, is calculated according to the profit you get from selling infringing goods or the loss of Tongrentang during its infringement, including the reasonable expenses paid by Tongrentang to stop the infringement.
If there is no infringement benefit, the court may also make a judgment of less than 500,000 yuan at its discretion.
6. If it is identified as infringement, criminal responsibility may be pursued regardless of whether it can be compensated. Of course, if you compensate, you will be given a lighter punishment as appropriate.
7. However, I don't think your matter is that serious: as long as you can prove that you have a purchase channel and you don't know that it is an infringing product, you can be irresponsible. The basis is: Article 56 of the Trademark Law: The amount of compensation for infringement of the exclusive right to use a trademark refers to the benefits gained by the infringer during the infringement period or the losses suffered by the infringed party during the infringement period, including the reasonable expenses paid by the infringed party to stop the infringement.
If the infringer gains benefits from the infringement listed in the preceding paragraph, or the losses suffered by the infringed are difficult to determine, the people's court shall award compensation of less than 500,000 yuan according to the circumstances of the infringement.
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 the supplier, and you will not be liable for compensation.