Judgment of the Court (Third Chamber) of 25 March 2021.#Slovak Telekom, a.s. v European Commission.#Appeal – Competition – Article 102 TFEU – Abuse of dominant position – Slovak market for broadband internet access services – Regulatory obligation on the part of operators with significant market power to grant access to the local loop – Conditions laid down by the incumbent operator for unbundled access by other operators to the local loop – Indispensability of the access – Margin squeeze – Costs – Competitor at least as efficient as the dominant undertaking – Rights of the defence.#Case C-165/19 P.