Amazon have an Anti-Counterfeiting Policy that prohibits the sale of counterfeit products, and use machine learning and dedicated teams to detect and remove such listings. Amazon works closely with brands to investigate and resolve any intellectual property complaints.
Amazon has a program called the Amazon Intellectual Property Policy, which prohibits the sale of infringing products. If you find out that someone is infringing on your intellectual property, you can report the infringing products to Amazon, and they will investigate and take action if they find them infringing.