Case C-366/13: Judgment of the Court (First Chamber) of 20 April 2016 (request for a preliminary ruling from the Corte suprema di cassazione — Italy) — Profit Investment Sim SpA, in liquidation v Stefano Ossi and Others (Reference for a preliminary ruling — Regulation (EC) No 44/2001 — Area of Freedom, Security and Justice — Concept of ‘irreconcilable judgments’ — Actions having different subject-matters brought against several defendants domiciled in various Member States — Conditions for the prorogation of jurisdiction — Jurisdiction clause — Concept of ‘matters relating to a contract’ — Verification of the lack of a valid contractual link)