Case C-131/16: Judgment of the Court (Eighth Chamber) of 11 May 2017 (request for a preliminary ruling from the Krajowa Izba Odwoławcza — Poland) — Archus sp. z o.o., Gama Jacek Lipik v Polskie Górnictwo Naftowe i Gazownictwo S.A. (Reference for a preliminary ruling — Public procurement — Directive 2004/17/EC — Principles of awarding contracts — Article 10 — Principle of equal treatment of tenderers — Requirement for contracting authorities to request tenderers to amend or supplement their tender — Right of the contracting authority to retain the bank guarantee in the event of refusal — Directive 92/13/EEC — Article 1(3) — Review procedures — Decision to award a public contract — Exclusion of a tenderer — Actions for annulment — Interest in bringing proceedings)