Can. 1683
© Libreria Editrice Vaticana Source: vatican.va
The diocesan bishop himself is competent to judge cases of the nullity of marriage with the briefer process whenever:
1° the petition is proposed by both spouses or by one of them, with the consent of the other;
2° circumstance of things and persons recur, with substantiating testimonies and records, which do not demand a more accurate inquiry or investigation, and which render the nullity manifest.
Wording replaced by Cf: Apostolic Letter Motu Proprio Mitis Iudex Dominus Iesus by which the canons of the Code of Canon Law pertaining to cases regarding the nullity of marriage are reformed (15 August 2015) (precedente versione): CHAPTER I. CASES TO DECLARE THE NULLITY OF MARRIAGE Art. 1. THE COMPETENT FORUM
If a new ground of nullity of the marriage is alleged at the appellate grade, the tribunal can admit it and judge it as if in first instance.