Para. 19: “The doctrine of res judicata simply states that once a matter/cause has been finally determined, it is not open to either party to re-open or re-litigate that same matter. A matter is said to be res judicata if it has already been adjudicated upon by a competent Court. This prevents it from being pursued further by the same parties. Res judicata precludes the continued litigation of same issues between the same parties. The matter cannot be raised again either in the same Court or in a different Court. In other words, for a plea of res judicata to be sustained, both the subject matter and parties must be the same.”
— Osaghae v Nigeria (2017) – ECW/CCJ/JUD/03/17