Remedy of annulment of judgment

Dear PAO,

I want to file a petition for annulment of judgment, but I am unsure if I can pursue it. From what I have read online, such a petition can only be filed if the court that rendered the questioned decision lacks jurisdiction or if there was extrinsic fraud. In my situation, I was not afforded due process. I was neither notified nor made a party to the case brought before the court, but my right as an heir was prejudiced by the court's decision. A friend, who is still a law student, said that a petition for annulment of judgment can also be filed on the grounds of denial of due process. Is this correct?