This chapter addresses the European legal framework for cross-border disputes arising from alleged violations of prospectus rules. It deals with the identification of both jurisdiction and applicable law in cases where litigation involves transnational elements, so that a conflict may occur about who is the judge having jurisdiction and what law is this judge bound to apply. Crucial in both respects are, in the first place, the connecting factors to which EU law refers to and, in the second place, the rules concerning issuers' and investors' ability to deviate from such rules. The chapter asserts that the importance of these rules can hardly be overestimated. However, not all courts are equal, and neither are national laws, and the chapter shows these differences affect the topic at hand.