The two Motu Proprio of Pope Francis introducing the reform of processes concerning obtainment of declaration of nullity have led to a significant development and change in the processes themselves. This article aims to present the proceedings of the courts of the Ukrainian Greek Catholic Church after December 8, 2015, that is after the commencement of the Motu proprio Mitis et Misericors Iesus. The report focuses on three points: 1. Presentation of the judicial system of Ukrainian Greek-Catholic Church; 2. The impact of the pontifical reform on judicial proceedings in Ukrainian Greek-Catholic Church; 3. Future perspectives and challenges.