1. Confirm the validity of the patent right: Before acting as an agent, you need to confirm whether the product you sell has the patent right and whether you have the right to sell the product. If you don't have the right to sell the product, you may need to negotiate with the patent holder.
2. Abide by relevant laws and regulations: If the products sold on behalf of others have the same appearance and function, but other people's products have patents, then you need to abide by relevant laws and regulations to ensure that your sales behavior is legal.
3. Avoid infringing others' rights: If the products sold by the agent have the same appearance and function, but others' products are patented, you need to ensure that your products do not infringe others' rights and the scope and duration of the patent right. If the product infringes the patent right of others, it may need to bear corresponding legal responsibilities.