/pəˈtɪʃən fɔr ˈnʌləti/ – Phrase
Definition: đơn kiện xin công nhận vô hiệu (một chứng thư, một cuộc hôn nhân,..)
A more thorough explanation: A petition for nullity is a legal document filed with a court seeking to have a marriage declared null and void, essentially treating the marriage as if it never existed. This type of petition is typically based on specific legal grounds, such as fraud, lack of consent, or incapacity at the time of the marriage. If the court grants the petition, the marriage is considered legally invalid from the beginning.
Example: The couple filed a petition for nullity of their marriage, claiming that it was never valid due to one party being already married at the time of the ceremony.