26The applicant observes that, according to case-law, the principle of the protection of legitimate expectations means, amongst other things, that where an existing legal regime is changed, the Commission must take account of the situation of undertakings which have entered into irrevocable commitments on the basis of the rules then in force, by taking transitional measures if necessary (Case 74/74 CNTA v Commission [1975] ECR 533).
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