In July of the following year, Prat passed his remaining courses and was then ready to complete his licensing. In order to graduate, he was required to pass an examination on a randomly chosen area of law. He was assigned Roman Law, which he managed to pass between 24–26 July 1876, while his thesis ""Observaciones sobre la ley electoral vigente"" (Observations on the current electoral law) was approved. There remained one final step before receiving his license — a final exam before the judges of the Supreme Court.