The customs protection system adopts a dual-track mechanism consisting of ex officio protection and protection upon application. Among them, the WTO Agreement on Trade-Related Aspects of Intellectual Property Rights (TRIPs Agreement) constitutes the core legal basis. The main regulatory document, the Regulations on Customs Protection of Intellectual Property Rights, provides detailed rules on scope, procedures, and legal responsibilities. Procedural essentials of customs protection of intellectual property rightsRecordation requirementsCustoms protection of intellectual property rights for the record is the core premise of the customs ex officio protection programme. Upon seizure of the suspected goods, customs will suspend customs clearance of the goods, detain the infringing goods and immediately initiate an investigation.