§1. By virtue of his office, the Roman Pontiff not only possesses power over the universal Church but also obtains the primacy of ordinary power over all particular churches and groups of them. Moreover, this primacy strengthens and protects the proper, ordinary, and immediate power which bishops possess in the particular churches entrusted to their care.
§2. In fulfilling the office of supreme pastor of the Church, the Roman Pontiff is always joined in communion with the other bishops and with the universal Church. He nevertheless has the right, according to the needs of the Church, to determine the manner, whether personal or collegial, of exercising this office.
§3. No appeal or recourse is permitted against a sentence or decree of the Roman Pontiff.
Source: Code of Canon Law (Vatican.va)