Case C-508/14: Judgment of the Court (Fifth Chamber) of 6 October 2015 (request for a preliminary ruling from the Nejvyšší správní soud — Czech Republic) — Český telekomunikační úřad v T-Mobile Czech Republic a.s., Vodafone Czech Republic a.s. (Reference for a preliminary ruling — Directive 2002/22/EC (Universal Service Directive) — Costing of universal service obligations — Taking account of the rate of return on equity capital — Direct effect — Scope ratione temporis)