Trademark infringement refers to: the actor uses the same or similar trademark on the same or similar goods without the permission of the trademark owner, or other acts that interfere with or hinder the trademark owner from using its registered trademark and damage the legitimate rights and interests of the trademark owner. Fake and shoddy products refer to counterfeit products or commodities of other brands or inferior quality. Counterfeit products refer to the use of untrue factory name, address, trademark, product name, product identification, etc. , so that customers and consumers mistakenly think that the products are genuine. Fake and shoddy products refer to products with poor quality or loss of performance.