51As the Court has already pointed out, the right to refuse to accept service of a document stems from the need to protect the rights of the defence of the addressee of that document, in accordance with the requirements of a fair hearing, enshrined in the second paragraph of Article 47 of the Charter of Fundamental Rights of the European Union and Article 6(1) of the European Convention for the Protection of Human Rights and Fundamental Freedoms, signed in Rome on 4 November 1950 (see, to that effect, order of 28 April 2016, Alta Realitat, C‑384/14, EU:C:2016:316, paragraph 73). While the main aim of Regulation No 1393/2007 is to improve the efficiency and speed of judicial procedures and to ensure the proper administration of justice, the Court has held that those objectives cannot be attained by undermining in any way the rights of the defence of the addressees of the documents in question (see, to that effect, judgment of 16 September 2015, Alpha Bank Cyprus, C‑519/13, EU:C:2015:603, paragraphs 30 and 31, and order of 28 April 2016, Alta Realitat, C‑384/14, EU:C:2016:316, paragraphs 48 and 49).