Yes. An annulment or declaration of nullity case in the Philippines can continue even if the other spouse refuses to participate, ignores the summons, lives abroad, or does not file an answer. But it does not mean the case is automatically granted. Philippine courts do not treat marriage cases like ordinary uncontested civil cases. The court must still protect the absent spouse’s right to due process, require proper service of summons, check for collusion, and require the petitioner to prove a valid legal ground.

In everyday language, people call almost all marriage-ending court cases “annulment.” Legally, however, there are two common court actions:

Common term people use	Proper legal remedy	Meaning
Annulment	Annulment of voidable marriage	The marriage was valid until annulled by the court. Grounds are under Article 45 of the Family Code.
Annulment / nullity	Declaration of absolute nullity of void marriage	The marriage was void from the beginning, such as psychological incapacity under Article 36, bigamy, lack of marriage license, or other void-marriage grounds.

Both are governed by the Family Code and the Supreme Court’s Rule on Declaration of Absolute Nullity of Void Marriages and Annulment of Voidable Marriages, A.M. No. 02-11-10-SC. That Rule expressly covers petitions filed in the Family Court and provides what happens when the respondent spouse does not answer. (Lawphil)

Can the case continue if the other spouse does not answer?

Yes. If the respondent spouse fails to file an answer, the court does not declare him or her in default. Instead, the court orders the public prosecutor to investigate whether the spouses are colluding, meaning secretly cooperating to obtain a decree by fake, suppressed, or manufactured evidence. (Lawphil)

This is very important because many petitioners think: “My spouse did not answer, so I already won.” That is not how Philippine annulment works.

Under Article 48 of the Family Code, in all annulment and declaration of nullity cases, the prosecuting attorney or fiscal must appear for the State to prevent collusion and ensure that evidence is not fabricated or suppressed. The court also cannot base its judgment merely on a stipulation of facts or confession of judgment. (Lawphil)

In practical terms:

The respondent’s silence does not stop the case.
The respondent’s silence does not automatically grant the petition.
The petitioner must still prove the legal ground through competent evidence.
The public prosecutor, and in many cases the Office of the Solicitor General, may still oppose the petition if the evidence is weak.
The court may still dismiss the case if the ground is not proven.

What the court must do before proceeding without the other spouse

The court must first be satisfied that the respondent spouse was properly notified. This is where many cases are delayed or even invalidated.

1. The respondent must be served with summons

Summons is the official court notice informing the respondent that a case has been filed. Service of summons is not a mere technicality. It protects the respondent’s constitutional right to due process.

Under A.M. No. 02-11-10-SC, service of summons is governed by Rule 14 of the Rules of Court, with special rules for annulment and nullity cases. If the respondent cannot be located despite diligent inquiry, service may be done by publication once a week for two consecutive weeks in a newspaper of general circulation, with a copy also sent to the respondent’s last known address by registered mail or other means the court considers sufficient. (Lawphil)

2. The respondent is given time to answer

The respondent generally has:

Mode of service	Time to answer
Personal or substituted service	15 days from service of summons
Service by publication	30 days from the last issue of publication

The answer must be verified by the respondent personally, not merely by counsel or an attorney-in-fact. (Lawphil)

3. If no answer is filed, the prosecutor investigates collusion

If the respondent does not answer, or the answer does not raise a real issue, the court orders the public prosecutor to investigate collusion.

The prosecutor must submit a report within one month from receipt of the court order. If the prosecutor reports no collusion, the court sets the case for pre-trial. If collusion is found and the court is convinced, the petition may be dismissed. (Lawphil)

4. The respondent must still receive pre-trial notice

Even if the respondent ignored the summons and filed no answer, the court must still send notice of pre-trial to the respondent. If summons was served by publication and the respondent did not answer, the notice of pre-trial is sent to the respondent’s last known address. (Lawphil)

Why the court does not simply “default” the absent spouse

In ordinary civil cases, a defendant who fails to answer may be declared in default. In marriage cases, Philippine law is stricter because marriage is treated as a protected social institution, not just a private contract between two people.

The Supreme Court has repeatedly recognized that the State has an interest in annulment and nullity cases. In Puyat v. Puyat, the Court explained that the State participates through the prosecutor to prevent collusion and ensure the evidence is not fabricated. The Court also recognized that a respondent spouse’s failure to testify or participate should not automatically be treated as collusion. (Supreme Court E-Library)

This means an absent spouse cannot easily block the case by ignoring it. But the petitioner also cannot win simply because the other spouse stayed away.

What if the spouse is abroad?

An annulment or nullity case may still proceed if the respondent spouse is abroad, but the petitioner must be careful with service of summons and documents.

Common situations include:

Situation	Practical effect
Respondent’s foreign address is known	The court may require service through appropriate modes under the Rules of Court, and where applicable, international service procedures.
Respondent is abroad but still has a Philippine address	The court may examine whether personal or substituted service at the Philippine address is possible.
Respondent’s whereabouts are truly unknown	The petitioner may ask leave of court for service by publication, but must show diligent efforts to locate the respondent.
Respondent is in a Hague Service Convention country	Cross-border service may involve the HCCH Service Convention, which entered into force for the Philippines on October 1, 2020. (HCCH)

For OFWs and Filipinos living abroad, the petition itself also has technical requirements. The verification and certification against forum shopping must be signed personally by the petitioner. If the petitioner is abroad, A.M. No. 02-11-10-SC requires authentication by an authorized Philippine consular officer. (Lawphil)

The Supreme Court has also recognized that an affidavit of residency executed by a petitioner temporarily residing abroad, duly authenticated by the appropriate Philippine Consulate, may be sufficient compliance with the 2023 amended residency guidelines for annulment, nullity, and legal separation petitions.

What if the petitioner does not know where the spouse is?

The case can still move forward, but the petitioner must show that the spouse’s whereabouts cannot be found despite genuine effort.

This usually means documenting attempts such as:

checking last known residential and work addresses;
asking relatives, neighbors, former employers, or common friends;
checking available public records;
reviewing old communications, email addresses, social media accounts, or remittance details;
giving the sheriff or process server accurate leads;
submitting affidavits explaining the efforts made.

The Supreme Court has warned that publication is not a shortcut. In Calubaquib-Diaz v. Diaz, the Court set aside a nullity judgment because summons by publication was improperly used. The Court emphasized that proper service of summons is a due process requirement, and defective service can make the resulting judgment void. (Supreme Court E-Library)

This is one of the biggest practical risks in “my spouse disappeared” annulment cases. If the petitioner rushes to publication without real diligent inquiry, the case may be vulnerable later.

Step-by-step process when the other spouse does not participate

1. Identify the correct legal ground

The court will not grant an annulment just because the spouses separated, no longer love each other, or have not communicated for years.

Common grounds include:

Legal basis	Examples
Article 36, Family Code	Psychological incapacity existing at the time of marriage, even if it became manifest later
Article 35, Family Code	Underage marriage, lack of authority of solemnizing officer, no marriage license except recognized exceptions, bigamous marriage, mistake of identity
Articles 37 and 38, Family Code	Incestuous or public policy void marriages
Article 45, Family Code	Lack of parental consent for 18–20-year-old party, unsound mind, fraud, force or intimidation, incurable physical incapacity to consummate, serious incurable sexually transmissible disease

Article 45 grounds for annulment have strict filing periods. For example, fraud must generally be raised within five years from discovery, while physical incapacity to consummate and serious incurable STD must be raised within five years after the marriage. (Lawphil)

2. Prepare the petition and supporting documents

The petition must state the complete facts constituting the cause of action. For Article 36 psychological incapacity, it must allege facts showing that either or both spouses were psychologically incapacitated to comply with essential marital obligations at the time of marriage. Expert opinion need not be alleged in the petition itself. (Lawphil)

The petition must also state the parties’ children, property regime, and properties involved. The petitioner may ask for provisional orders on support, custody, visitation, administration of property, and urgent related matters. (Lawphil)

3. File in the proper Family Court

Venue is usually the Family Court of the province or city where the petitioner or respondent has resided for at least six months before filing, or where a non-resident respondent may be found in the Philippines, subject to later amendments and residency validation requirements. (Lawphil)

In practice, courts carefully examine residency because some petitioners try to file in a “faster” court where they do not really live. That can lead to dismissal.

4. Serve summons on the respondent

The court issues summons. The sheriff or authorized process server attempts service. If the respondent cannot be served personally, other modes may be considered only after the requirements are met.

If the respondent is missing, abroad, or evading service, the petitioner must ask the court for the proper mode of service and support the request with facts.

5. Wait for the answer period

If the respondent answers, the case proceeds as contested.

If the respondent does not answer, the court does not declare default. The public prosecutor investigates collusion.

6. Attend pre-trial

Pre-trial is mandatory. The court may also require a social worker case study, especially where children, custody, support, or welfare concerns are involved. (Lawphil)

If the petitioner fails to appear personally, the case may be dismissed unless counsel or a duly authorized representative appears and proves a valid excuse. If the respondent filed an answer but fails to appear, the court may proceed with pre-trial, but the prosecutor must investigate whether the non-appearance is due to collusion. (Lawphil)

7. Present evidence at trial

The judge personally conducts the trial. The court cannot grant the petition through judgment on the pleadings, summary judgment, or confession of judgment. The legal ground must be proved. (Lawphil)

For Article 36 cases, Tan-Andal v. Andal clarified that psychological incapacity is a legal concept, not strictly a medical one. Expert testimony may help, but ordinary witnesses who knew the spouse before and during the marriage may also testify about consistent patterns of behavior. The standard is clear and convincing evidence. (Supreme Court E-Library)

8. Wait for the decision, possible reconsideration, and appeal

If the court grants the petition, the decision is not the final step. The parties, public prosecutor, and Solicitor General must be served copies. If the respondent was summoned by publication and did not appear, the dispositive portion of the decision must be published once in a newspaper of general circulation. (Lawphil)

No appeal is allowed unless the appellant first files a motion for reconsideration or new trial within 15 days from notice of judgment. An aggrieved party or the Solicitor General may appeal after denial. (Lawphil)

9. Register the judgment and secure the decree

A decision granting annulment or nullity is not enough for remarriage.

The entry of judgment must be registered with the civil registry where the marriage was recorded and where the Family Court is located. If there are properties and children’s presumptive legitimes involved, liquidation, partition, and delivery requirements may apply before the decree is issued. The decree must then be registered with the proper civil registries and the PSA. (Lawphil)

Under Articles 52 and 53 of the Family Code, remarriage requires compliance with recording requirements; otherwise, a subsequent marriage may itself be void. (Lawphil)

Documents commonly needed

Document	Why it matters
PSA marriage certificate	Proves the marriage being challenged
PSA birth certificates of children	Needed for custody, support, legitimacy, and presumptive legitime issues
PSA birth certificates of spouses	May be relevant to age, identity, and capacity
Valid IDs of petitioner	For verification, notarization, and court requirements
Barangay residency certification or affidavit of residency	Supports venue and residency requirements
Proof of respondent’s last known address	Needed for summons and notices
Evidence supporting the ground	Messages, photos, police blotters, medical records, rehab records, financial records, witness affidavits, psychological report if used
Property documents	Land titles, tax declarations, vehicle registrations, bank or loan records, if property issues are raised
Consular acknowledgment, apostille, or authentication for foreign documents	Needed when documents are signed or issued abroad for use in Philippine court

For documents executed abroad, the correct authentication method depends on where and how the document was signed. If signed before a Philippine Embassy or Consulate, consular acknowledgment may be used. If notarized before a foreign notary, an apostille may be needed if the country is part of the Apostille Convention; otherwise, consular authentication may still be required. The DFA’s Apostille system is the official Philippine channel for authentication of Philippine public documents for foreign use. (Apostille Philippines)

Practical timelines and bottlenecks

A non-participating spouse can make the case faster in some ways because there may be less cross-examination and fewer contested motions. But it can also make the case slower if service of summons becomes difficult.

Common bottlenecks include:

locating the respondent;
failed sheriff’s returns;
motions for alias summons or publication;
newspaper publication schedules and costs;
prosecutor collusion investigation;
crowded Family Court calendars;
psychological evaluation and witness preparation;
OSG review or appeal;
liquidation and registration after judgment.

A straightforward uncontested case may still take many months to a few years. A case involving defective service, missing spouses, property disputes, custody issues, or appeals can take significantly longer.

Common mistakes when the other spouse refuses to participate

Using publication too quickly

Publication is not a shortcut for convenience. The court must see diligent inquiry. A weak attempt at service can later destroy the judgment.

Thinking silence means consent

The respondent’s silence is not legal consent to annulment. The court still needs evidence.

Relying only on the petitioner’s story

The petitioner’s testimony matters, but corroborating witnesses and documents often make the case stronger. For Article 36, witnesses who knew the spouse before marriage can be especially useful.

Confusing separation with annulment

Long separation alone is not a ground. A couple may be separated for 10, 20, or 30 years and still remain legally married unless a court decree of annulment or nullity is issued and properly registered.

Ignoring custody, support, and property issues

Even if the other spouse does not participate, the court must still address children, support, and property matters where applicable. Article 49 allows the court to provide for support, custody, and visitation during the pendency of the case. (Lawphil)

Assuming a church annulment is enough

A church annulment does not change civil status before the PSA. A civil court judgment is needed to change Philippine civil records.

Remarrying after the decision but before registration

A favorable decision is not the same as a completed decree and PSA annotation. The registration steps under the Family Code and A.M. No. 02-11-10-SC matter.

Frequently Asked Questions

Can my spouse stop the annulment by refusing to sign?

No. The other spouse’s signature is not required for the case to continue. What matters is proper service of summons, compliance with court procedure, and proof of a valid legal ground.

Will the court grant annulment automatically if my spouse does not appear?

No. The court cannot grant annulment or nullity by default, confession, or mere agreement. The petitioner must still prove the ground, and the prosecutor must check for collusion.

What happens if my spouse ignores the summons?

If summons was validly served and the respondent does not answer, the court orders the public prosecutor to investigate collusion. If no collusion is found, the case proceeds to pre-trial and trial.

What if I do not know where my spouse lives?

The court may allow service by publication only if the spouse’s whereabouts cannot be determined despite diligent inquiry. You must be ready to show real efforts to locate the respondent.

Can I file if my spouse is abroad?

Yes, but service of summons and document authentication must be handled correctly. If the respondent is in a foreign country, the court may require appropriate service under the Rules of Court and, where applicable, international service procedures.

Can my foreign spouse be included in a Philippine annulment case?

Yes, if the Philippine court has jurisdiction and the case is properly filed and served. Foreign citizenship does not automatically prevent a Philippine annulment or nullity case, especially where the marriage is registered in the Philippines or the civil status of a Filipino spouse is involved.

Do I need a psychologist if my spouse will not participate?

Not always. For Article 36 psychological incapacity, Tan-Andal v. Andal clarified that psychological incapacity is a legal concept and may be proven by the totality of evidence, including ordinary witnesses. A psychological report can still be helpful, especially in complex cases, but it is not automatically indispensable.

Can the absent spouse challenge the decision later?

Yes, especially if summons was defective or due process was violated. A judgment obtained after improper service may be declared void, as shown in cases where the Supreme Court set aside decisions because the respondent was not properly notified.

Does annulment affect children?

It depends on the ground and circumstances. For Article 36 cases, Article 54 of the Family Code provides that children conceived or born before the judgment of annulment or absolute nullity under Article 36 becomes final and executory are considered legitimate. The Supreme Court has also reiterated that children’s legitimacy is protected in Article 36 nullity situations. (Lawphil)

Can I remarry immediately after winning the case?

No. You must wait for finality, entry of judgment, issuance of the decree, and proper registration with the civil registries and PSA. Skipping these steps can create serious legal problems for a later marriage.

Key Takeaways

An annulment or declaration of nullity case can continue without the other spouse’s participation.
The respondent spouse must still be properly served with summons or notified through a valid court-authorized mode.
The court will not declare the respondent in default in the usual civil-case sense.
The public prosecutor investigates collusion when the respondent does not answer.
The petitioner must still prove a valid ground with strong evidence.
Improper service of summons can make the judgment vulnerable or void.
A favorable decision is not the end; finality, decree issuance, civil registry registration, and PSA annotation are essential before remarriage.