The Second Environmental Court of Chile annulled Supreme Decree No. 47 (issued by the Ministry of Environment) which established mandatory collection and recovery targets for producers of used lubricating oils under the Extended Producer Responsibility law. The court determined the decree contained essential procedural defects in its preparation and approval process. As a result, the January implementation deadline for producer obligations—including collection targets and valorization requirements—has been postponed indefinitely. The annulment has triggered significant debate among stakeholders including legal experts, industry associations, and government officials regarding the causes of the procedural failures, the implications for compliance, and next steps for re-establishing an effective REP regime for this priority waste stream.