The areas of expertise of his office are:

• The declaration of marital annulment, in front of the Rotal Roman Court and ecclesiastical courts of the world. The cases of Latin Catholics are represented, as well as the cases of oriental catholics (of Alexandrian, Antioch, Armenian, Chaldean, and Byzantine traditions), together with all of the related inter-ritual, inter-ecclesiastical, and inter-confessional questions.

• The civil recognition of marital annulment sentences.

• Other civil cases concerning marriage and family.