In the Philippines, absolute divorce remains unavailable to Filipino citizens. The only judicial remedies that permanently dissolve a marriage are (1) declaration of absolute nullity of a void marriage under Articles 35, 36, 37, 38, and 52 of the Family Code of the Philippines, and (2) annulment of a voidable marriage under Article 45 of the same Code. Although the two remedies are technically distinct—one rendering the marriage void from the beginning and the other merely voidable—the procedural rules, including the strict non-appearance regime, apply equally to both. This article sets out every material legal requirement, ground, prescriptive period, procedural step, and the unique non-appearance safeguards that govern these cases.

Legal Framework

The substantive law is the Family Code (Executive Order No. 209, series of 1987, as amended). The procedural law is the Rule on Declaration of Absolute Nullity of Void Marriages and Annulment of Voidable Marriages (A.M. No. 02-11-10-SC, effective 15 March 2003, still in force). The State is an indispensable party; hence the mandatory participation of the Office of the Solicitor General (OSG) and the provincial or city prosecutor.

I. Annulment of Voidable Marriages – Article 45 Grounds

A marriage is voidable (valid until annulled) when any of the following six circumstances existed at the time of celebration:

Lack of parental consent – The party was at least 18 but below 21, and the marriage was solemnized without the written consent of the parents, guardian, or person exercising substitute parental authority.
The action must be filed within five years after the minor attains 21, unless the parties freely cohabited as husband and wife after the minor reached 21.
Unsound mind – Either party was of unsound mind.
Only the sane spouse, the guardian, or the insane spouse (during a lucid interval) may file. The action prescribes five years from the time the sane spouse discovers the insanity or from the time the guardian learns of it. Cohabitation after the insane party regains reason bars the action.
Consent obtained by fraud – Fraud is exhaustively defined by Article 46 as:
a. Non-disclosure of a previous conviction by final judgment of a crime involving moral turpitude;
b. Concealment by the wife that she was pregnant by another man at the time of marriage;
c. Concealment of a sexually transmissible disease;
d. Concealment of drug addiction;
e. Concealment of homosexuality.
The action must be brought within five years from discovery of the fraud.
Consent obtained by force, intimidation, or undue influence – The vitiated consent must be proven. The action prescribes five years from the time the force, intimidation, or undue influence ceased.
Physical incapacity (impotence) – The incapacity must be permanent and incurable and must exist at the time of marriage. The action must be filed within five years from celebration.
Serious and incurable sexually transmissible disease – The disease must be serious, incurable, and concealed at the time of marriage. Same five-year prescriptive period.

Only the injured party may generally file, except in the unsound-mind and minor-consent cases where other persons are allowed.

II. Declaration of Nullity of Void Marriages – Common Grounds (Frequently Confused with Annulment)

Although technically not “annulment,” these cases follow identical procedure and non-appearance rules:

Article 35: Lack of essential or formal requisites (e.g., no license, bigamy, incestuous marriages, void under Article 37 or 38).
Article 36: Psychological incapacity (the most commonly invoked ground). The incapacity must be (a) grave, (b) juridically antecedent, and (c) incurable. Jurisprudence (Republic v. Molina, 1995; later softened by Republic v. Manalo, 2018, and subsequent rulings) requires expert testimony in most cases, but the Supreme Court has repeatedly emphasized that the totality of evidence controls.
Article 52: Failure to record the judgment of annulment or nullity in the appropriate civil registry.

III. Procedural Requirements and Venue

Petitioner – Must be the proper party under Article 47 (injured spouse or qualified representative).
Venue – Regional Trial Court of the city or province where the petitioner or respondent has resided for at least six months immediately preceding the filing (or where the marriage was celebrated if both parties are non-residents).
Petition contents (Rule, Sec. 5):
- Personal circumstances of parties
- Complete statement of facts and grounds
- Certification against forum shopping
- Prayer for nullity/annulment, custody, support, property division, and use of surname.
Attachments: Marriage certificate, birth certificates of children, property inventory (if applicable), psychological evaluation (for Article 36 cases).
Filing fees: Full docket fees plus publication costs (unless petitioner is declared indigent under Rule 3, Section 21 of the Rules of Court).
Summons: Must be served personally on the respondent. Substituted service is allowed only after diligent efforts.

IV. Non-Appearance Rules – The Core Safeguard

Philippine law prohibits ordinary “judgment by default” in nullity and annulment cases because marriage is a social institution protected by the State.

Key provisions of A.M. No. 02-11-10-SC:

No default order (Section 6). Failure of the respondent to file an answer or to appear does not result in a default judgment. The court cannot simply grant the petition on the basis of the petitioner’s allegations alone.
Mandatory investigation by the prosecutor (Section 9).
When the respondent fails to answer within the 15-day period (or extended period), the court issues an order directing the public prosecutor or fiscal to:
a. Investigate whether there is collusion between the parties;
b. Determine whether the petition is grounded on sufficient evidence.
The prosecutor must submit a written report within the period fixed by the court (usually 30–60 days).
OSG participation. The OSG is furnished copies of all pleadings and must be given notice of every hearing. The court may motu proprio or on motion require the OSG to appear.
Ex-parte reception of evidence. If the prosecutor’s report finds no collusion and the evidence appears sufficient, the court sets the case for pre-trial or for reception of evidence ex parte. The respondent is still notified of the settings but is not required to appear. The petitioner must still present clear and convincing evidence.
Prohibition on stipulated facts or confession of judgment. The parties may not stipulate the existence of the ground or the nullity of the marriage. The court must independently verify every element.
Effect of respondent’s later appearance. A respondent who belatedly appears after the prosecutor’s report may still participate, present evidence, and cross-examine, but the court may impose terms to prevent delay.

These non-appearance rules apply uniformly whether the case is for annulment (voidable) or declaration of nullity (void), including the extremely common Article 36 psychological-incapacity petitions.

V. Pre-Trial and Trial

Mandatory pre-trial (Rule, Sec. 7).
Referral to mediation (except when violence is alleged).
At trial, the petitioner bears the burden of proof. For Article 36 cases, expert testimony from a psychiatrist or clinical psychologist is almost invariably required, although the Supreme Court has allowed lay evidence in exceptional circumstances.
Decision must state the facts and the law; mere conclusions are insufficient.

VI. Effects of Judgment

Annulment (voidable marriage)

Marriage is valid until the judgment becomes final.
Children conceived or born before judgment are legitimate.
Property regime is liquidated as if the marriage subsisted.
Innocent spouse may use the offending spouse’s surname until remarriage.

Declaration of nullity (void marriage)

Marriage is void ab initio; no legal effects from the beginning.
Children are still legitimate if conceived before the final judgment (Art. 54).
Property relations are governed by co-ownership rules under Article 147 or 148.

The judgment must be recorded in the local civil registry and the National Statistics Office (now Philippine Statistics Authority). Until recorded, the marriage remains valid for third persons.

VII. Appeal and Finality

Ordinary appeal to the Court of Appeals within 15 days.
Further appeal to the Supreme Court via petition for review on certiorari.
The judgment becomes final only after the 15-day period lapses or after appellate resolution, and after recording.

VIII. Other Material Matters

Remarriage: Allowed only after the judgment attains finality and is registered.
Foreign marriages: If both parties are Filipinos, Philippine courts retain jurisdiction.
Custody and support: Decided in the same proceeding applying the “best interest of the child” standard.
Property: Partition follows the regime chosen at marriage (absolute community, conjugal partnership, or complete separation).
Surname: The wife may revert to her maiden name upon finality.

The non-appearance rules, the mandatory prosecutor investigation, and the prohibition on default judgments are not mere technicalities; they embody the constitutional policy that marriage is “an inviolable social institution” (Article XV, 1987 Constitution). Any petition that reaches finality without these safeguards is vulnerable to nullification by the Supreme Court on due-process and public-policy grounds.

This framework—grounds, prescriptive periods, venue, mandatory State intervention, and absolute prohibition on default—constitutes the complete legal architecture governing annulment and declaration of nullity in the Philippines.