This episode examines public policy limitations on trademark protection, comparing approaches across various jurisdictions as outlined in The Cambridge Handbook of International and Comparative Trademark Law. Public policy serves as a boundary to trademark rights, ensuring trademarks do not violate moral standards, public order, or fundamental rights. We explore specific limitations such as restrictions on scandalous or offensive marks, regulatory exclusions, and the use of trademarks for harmful products like tobacco or alcohol. Through comparative analysis of cases from the US, EU, and other countries, we discuss how courts and legislatures balance public interest with brand protection, including the impact on freedom of expression and consumer protection. This discussion provides insights into the evolving role of trademarks within public policy and the nuances in legal frameworks internationally.