Second, sales is a kind of infringement, which is not necessarily related to sales, and if you can explain that you don't know and cooperate to provide the source of infringing products, it is unintentional infringement and you can be exempted from compensation.
Thirdly, it is doubtful whether the opposing evidence can support the claim of 1.5 million yuan, because the claim is determined according to the unit price and quantity of the patented product (see the second case of Article 65 of the Patent Law).
Article 65 The amount of compensation for patent infringement shall be determined according to the actual losses suffered by the obligee due to the infringement; If the actual loss is difficult to determine, it can be determined according to the interests obtained by the infringer due to infringement. If it is difficult to determine the loss of the obligee or the interests of the infringer, it shall be reasonably determined by reference to the multiple of the patent license fee. The amount of compensation shall also include the reasonable expenses paid by the obligee to stop the infringement. If it is difficult to determine the loss of the obligee, the benefits obtained by the infringer and the patent license fee, the people's court may determine the compensation of more than 1 10,000 yuan and less than1100,000 yuan according to the type of patent right, the nature and circumstances of the infringement.