Directive 2013/13/EU adapts certain tax Directives to reflect Croatia's accession. The adapted legislation includes the Parent-Subsidiary Directive, the Mergers Directive and the Interest and Royalties Directive – all of which are intended to prevent double taxation within the Single Market. Member States were required to implement these changes by the time Croatia joined the EU on 1 July, 2013. However, Cyprus has not notified the Commission of any measures it has taken to this end. The request is in the form of a Reasoned Opinion. In the absence of a satisfactory response within two months, the Commission may refer Cyprus to the EU Court of Justice.