This article explains how the Unified Patent Court approaches confidentiality in litigation, outlining the procedures for restricting access to sensitive information, how confidentiality clubs are formed, and when hearings may be held in private. It highlights key case law shaping these rules, the balance between fair trial rights and protection of commercial data, and the penalties for breaches. Practical guidance is provided to help parties navigate applications, manage confidential documents, and understand what to expect throughout UPC proceedings.