Judgment of the Court (First Chamber) of 18 November 2020.#Ryanair DAC v DelayFix.#Request for a preliminary ruling from the Sąd Okręgowy w Warszawie.#Reference for a preliminary ruling – Judicial cooperation in civil and commercial matters – Regulation (EU) No 1215/2012 – Contract of transport by air – Jurisdiction clause agreed to by the passenger as a consumer – Claim made by the passenger against the airline – Assignment of that claim to a collection agency – Enforceability of the jurisdiction clause by the airline against the assignee company of that passenger’s claim – Directive 93/13/EEC.#Case C-519/19.