Joined Cases C-80/21 to C-82/21: Judgment of the Court (Ninth Chamber) of 8 September 2022 (requests for a preliminary ruling from the Sąd Rejonowy dla Warszawy — Śródmieścia w Warszawie — Poland) — E.K., S.K. v D.B.P. (C-80/21), and B.S., W.S. v M. (C-81/21), and B.S., Ł.S. v M. (C-82/21) (Request for a preliminary ruling — Directive 93/13/EEC — Unfair terms in consumer contracts — Article 6(1) and Article 7(1) — Mortgage credit agreements — Effects of a finding that a term is unfair — Period of limitation — Principle of effectiveness)