Persona standi in judicio is a right which a person has generally, to sue or defend action. Standing or character enabling a person to appear in a lawsuit is persona standi in judicio. Persona standi is essential for a person to vindicate his/her right. Generally, every person has got the right to file suit seeking relief for infringement of his/her right. However, that right can be deprived by operation of law. A person is not entitled to sue or defend until the removal of any disability which law imposed on him. But title to sue is a legal interest which a party must obtain to initiate particular action.