Have you ever been punished for product infringement when opening a Taobao store? How to file a complaint if you encounter unreasonable infringement? (1) If the product trademark rights are infringed upon the intellectual property rights of others, at least one of the following certificates must be provided when making a complaint: 1. Complaint revocation letter: The respondent can contact the complainant for negotiation and explain the purchasing channels to him . If both parties reach an understanding, the complainant can be asked to issue a complaint revocation letter stating that the complaint has been withdrawn; 2. Purchase voucher: If the respondent's goods were purchased through formal channels, the purchase voucher can be provided. However, only invoices and other verifiable purchase vouchers are valid. Receipts and purchase receipts are invalid; 3. Authorization voucher: If the respondent is authorized by the brand, it can provide authorization vouchers, such as distribution agreement and brand authorization agreement. wait. (2) If you are subject to infringement of other people's intellectual property rights due to patent infringement, you need to provide at least one of the following documents when making a complaint: 1. Patent certificate: If the respondent owns the patent rights for the goods sold, you can provide a patent certificate Make a complaint; 2. Proof of purchase from the complaining party: If the goods sold were purchased from the complainant, the patentee, you can provide the purchase certificate to appeal. However, only invoices and other verifiable purchase vouchers are valid, and receipts and purchase receipts are invalid; 3. Evidence of problems with the complaining party's patent rights. If you believe that the complaining party's patent rights themselves are unreasonable, you can provide vouchers to prove it. For example, evidence can be provided to prove that similar technologies and products have been widely used or have been published in domestic and foreign publications before the complainant applied for this patent right.