58In that regard, it should be borne in mind that the Commission is required, during the administrative procedure, to respect the fundamental rights of the undertakings concerned. These include the right to good administration, enshrined in Article 41 of the Charter of Fundamental Rights of the European Union (‘the Charter’), according to which every person has the right, inter alia, to have his or her affairs handled impartially by the institutions of the European Union. That requirement of impartiality encompasses, on the one hand, subjective impartiality, in so far as no member of the institution concerned who is responsible for the matter may show bias or personal prejudice, and, on the other hand, objective impartiality, in so far as there must be sufficient guarantees to exclude any legitimate doubt as to bias on the part of the institution concerned (see, to that effect, judgment of 11 July 2013, Ziegler v Commission, C‑439/11 P, EU:C:2013:513, paragraphs 154 and 155).
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