Marriage annulment — CC arts. 104-109

Marriage annulment — distinct from divorce — applies to marriages affected by an original defect that vitiates the consent or violates a substantive legal requirement. Although rare, annulment retains important specificities, in particular for migration and succession consequences. The firm handles annulment applications and oppositions before the Family Chamber of the Court of First Instance.

Annulment vs. divorce — a different legal effect

A divorce dissolves a valid marriage going forward. An annulment declares that the marriage was defective from the outset and, in principle, never legally existed — although certain effects (in particular for children) are preserved (CC art. 109).

Practical consequences :

• Status of children — children born of the annulled marriage retain their filiation; the unmarried-parenthood regime applies thereafter.
• Matrimonial property — liquidated as if there had been no marriage in principle, but with retroactive adjustment if assets were genuinely co-managed.
• Migration status — for a foreign spouse, annulment of a marriage that gave rise to a permit can result in loss of the residence right, with limited protection under art. 50 LEI.
• Succession — the surviving “spouse” of an annulled marriage has no inheritance right.

Absolute grounds (CC art. 105)

Annulment may be requested at any time, by anyone with an interest (including the cantonal authorities), where the marriage is affected by :

• bigamy — one of the spouses was already married;
• incapacity to consent due to mental disorder at the time of the marriage;
• incestuous relationship between the spouses (close blood ties or adoption);
• non-respect of the celebration formalities that go to the substance.

Relative grounds (CC art. 107)

Annulment may be requested only by the affected spouse and within strict time limits :

• Defect of consent — error, fraud, threat. Filed within 6 months of discovery and at most 5 years after the marriage.
• Marriage of convenience — celebrated solely to acquire residence rights or evade the law. Often raised by the cantonal authorities.
• Forced marriage — increasing case law since the 2013 reform.

Proof issues

Annulment cases turn on evidence of the defect at the time of the marriage. This is often delicate :

• Defect of consent : contemporaneous medical records, witness statements, written communications.
• Marriage of convenience : pattern of evidence — separate residences, lack of cohabitation, financial arrangements, prior immigration history.
• Forced marriage : testimony of the coerced spouse, medical and social-services records, family pressure documented.

Burden of proof rests on the petitioner — except in cases of clear marriage of convenience flagged by the cantonal authorities.

Procedure

• Petition filed with the Court of First Instance — Family Chamber.
• Hearing with the parties, witnesses, possibly medical experts.
• Judgment — annulment pronounced (or refused), with consequences on civil-status records.
• Appeal to the Cour de justice within 30 days.

Timeline: 12 to 24 months at first instance, longer if expert evidence is required.

Cross-border specificities

For binational marriages, additional layers apply :

• Jurisdiction (LDIP art. 59) — same rules as for divorce.
• Applicable law (LDIP art. 45) — the law of the State of celebration of the marriage governs validity of formal requirements; the law of each spouse’s domicile applies for substantive conditions.
• Recognition abroad — a Swiss annulment must be transcribed at the civil registry of the spouse’s country, with possible exequatur formalities.

When annulment is the right vehicle

Annulment is rarely the best choice. It is preferred over divorce in narrow situations :

• when there are very few years of marriage and no children — both procedures are similar in effect;
• when one spouse needs to deny any retroactive matrimonial-property liquidation (the annulled marriage produces no community);
• when the case has implications for criminal proceedings (forced marriage, coercion) — annulment crystallises a finding of fact that supports the criminal case;
• when administrative authorities are pursuing the annulment for marriage-of-convenience reasons — the affected spouse may want to defend rather than let the authority annul unilaterally.

In most cases, divorce is faster, cheaper, and produces clearer outcomes.

What you receive

• A diagnostic of whether annulment vs. divorce is the right vehicle.
• Drafting of the petition (or the defence) with full evidentiary file.
• Representation at the hearing(s).
• Civil-status transcription steps in Switzerland and, where needed, abroad.

Related pages

• Judicial divorce in Geneva
• Cross-border divorce (Swiss-French)
• Residence permits and immigration law — art. 50 LEI consequences

First consultation CHF 50.