42It is in the light of those principles that the Court has therefore held that the national court is required to assess of its own motion whether a contractual term falling within the scope of Directive 93/13 is unfair, compensating in this way for the imbalance which exists between the consumer and the seller or supplier (see, to that effect, Mostaza Claro, paragraph 38; Case C-243/08 Pannon GSM [2009] ECR I-4713, paragraph 31; Asturcom Telecomunicaciones, paragraph 32; and VB Pénzügyi Lízing, paragraph 49).
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