Anyone who is in heaven is a saint, including the angels. Canonization is just the official process by the Church where this is publicly recognized and a Mass and Office are established for a particular person. However, this is rather recent:
St. Patrick died, and entered heaven, and has been celebrated as a saint long before the Church's process of canonization was even conceived.
Saint Patrick was never a pope.
St. Patrick did not aspire to become a saint. He simply tried to do the will of God in the best way possible and that led to him being declared a saint.
St. Patrick was dead when he became a saint. That is a primary requisite for becoming a saint.
The official canonization process was not in place at the time that Patrick was declared a saint. No miracles were required.
At the time of Saint Patrick, miracles were not required to be declared a saint. Patrick was declared a saint by the local Catholic congregation based on his holy and pious life.
Yes, Saint Patrick is a saint. That is why he has the title "Saint" before his name.
No, he did not become blind.
Saint Patrick was largely responsible for the conversion of pagan Ireland to Christianity. It was only natural that he would be named as the patron saint of that country.
Saint Patrick is not an archangel.
Yes, St. Patrick is really a saint.
Saint Patrick is the patron saint of Ireland, Montserrat and Nigeria.
Saint Patrick is the patron saint of Ireland.
No, Saint Patrick was not a thief.
Saint Patrick was not married.
You have it backwards. Saint Patrick's Day was named after Saint Patrick. March 15 is the Catholic feast day of Saint Patrick.
Patrick is the patron saint of Ireland and Nigeria.
Saint Patrick was a man. Saint Patricia was a woman.
Saint Patrick is the patron saint of many things but Saint Peter and Saint Joseph are the patron saints of the Universal Church.
No, Patrick is the patron saint of Ireland and Nigeria, not Portugal.
Patrick is the patron saint of both Ireland and Nigeria.
No, Saint Patrick is Saint Patrick and not known by another saint's name. His birth name, however, was Maewyn Succat.
Saint Darerca of Ireland is said to have been a sister of Saint Patrick.
Saint Patrick was the bishop of Ireland.
March 17 is the feast of Saint Patrick.