51As regards, fourth, the procedural arrangements under which, in the context of an application for residence for the purposes of family reunification, a third-country national may rely on the existence of a derived right under Article 20 TFEU, the Court held that, while it is indeed for the Member States to determine the detailed rules on how to give effect to the derived right of residence which a third-country national must, in the very specific situations referred to in paragraph 39 of this judgment, be granted under Article 20 TFEU, the fact remains that those procedural arrangements cannot, however, compromise the effectiveness of Article 20 (judgment of 8 May 2018, K.A. and Others (Family reunification in Belgium), C‑82/16, EU:C:2018:308, paragraph 54).
Source: EUR-Lex, © European Union, 1998-2026. Reuse authorised under Decision 2011/833/EU.