36That concept is thus intended to penalise the conduct of a dominant undertaking which, on a market where the degree of competition is already weakened because of the presence of the undertaking concerned, adversely affects an effective competition structure (judgment of 12 May 2022, Servizio Elettrico Nazionale and Others, C‑377/20, EU:C:2022:379, paragraph 68 and the case-law cited).
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