Notwithstanding the expiry of the period laid down in the third paragraph of Article 173, any party may, in proceedings in which a regulation of the Council or of the Commission is in issue, plead the grounds specified in the first paragraph of Article 173, in order to invoke before the Court of Justice the inapplicability of that regulation.
D'ainneoin an tréimhse atá leagtha síos sa tríú mir d'Airteagal 173 a bheith caite, féadfaidh páirti ar bith, i gcás imeachtaí ina mbeidh rialachán ón gComhairle nó ón gCoimisiún faoi shaincheist, na forais a phléadáil a shonraítear sa chéad mhír d'Airteagal 173, d'fhonn neamhfheidhmeacht an rialacháin sin a agairt os comhair na Cúirte Breithiúnais.