<p>Article 101 TFEU, read in the light of the general principle of the right to good administration, Article 47 of the Charter of Fundamental Rights of the European Union and the principle of effectiveness, must be interpreted as not precluding national legislation which, in the context of proceedings for a finding establishing an anti-competitive practice by a national competition authority, does not expressly provide that the time limit for closure of the investigation stage of those proceedings, set by that authority in the statement of objections, is mandatory, so that that authority may unilaterally postpone that time limit, by reasoned decisions, subject to judicial review, where circumstances arise which lead to an extension of the subject matter of those proceedings or of the number of undertakings covered by those proceedings, provided that such a postponement does not amount to a failure to observe the reasonable period within which that investigation stage must be concluded.</p>