65It should be noted, first, that the question whether action constituting an abusive practice has taken place must be examined in accordance with the rules of evidence of national law. Those rules must not, however, undermine the effectiveness of EU law (see, to this effect, judgment in Halifax and Others, C‑255/02, EU:C:2006:121, paragraph 76).
Source: EUR-Lex, © European Union, 1998-2026. Reuse authorised under Decision 2011/833/EU.