How do I acknowledge paternity in Liechtenstein?
With married parents the husband counts as father by presumption; with unmarried parents paternity must be expressly acknowledged. This is governed by the Liechtenstein Civil Code (ABGB). The presumption of paternity for the husband even runs for 302 days after dissolution of the marriage by divorce, separation or death. If the mother is not married, the Civil Registry Office reports the birth to the Office of Social Services, which invites the parents to acknowledge paternity; the Princely Court of Justice then approves it and enters it in the register. The myth: 'With unmarried parents the father is automatically on the birth certificate.' Wrong — without an acknowledgement or a court action paternity stays open. Legally there is no difference between children born in and out of wedlock for kinship and inheritance. The ABGB names 302 days, the Swiss ZGB only 300.
📋 The rules
- The husband is father by presumption: If the mother is married, her husband counts as father under the ABGB. The presumption runs for up to 302 days after dissolution of the marriage by divorce, separation or death.
- Unmarried needs the acknowledgement: Without a marriage, legal paternity does not arise automatically. The father must formally acknowledge the child, or paternity is established by a court.
- Route via the Office of Social Services: The Civil Registry Office reports the birth of a child born out of wedlock to the Office of Social Services (Children and Youth Service), which invites the parents to sign the acknowledgement.
- Court approves and registers: The acknowledgement is submitted to the Princely Court of Justice for guardianship-court approval and then entered at the Civil Registry Office.
- Equal rights for all children: For kinship and inheritance Liechtenstein makes no difference between children born in and out of wedlock — contrary to what many still assume.
🔓 Exceptions
- Contest possible: Both the presumption and an acknowledgement can be challenged within deadlines, for instance where a DNA test rules out biological paternity.
- Paternity action: If the father refuses to acknowledge, paternity can be established by a court action — with effect for maintenance and inheritance.
- Cross-border cases: With binational parents, private international law decides which law applies and whether an acknowledgement declared abroad is recognised.
⚠️ Penalties & fines
Whoever does not settle paternity creates legal gaps for the child — and later obligations for themselves. Without an acknowledgement the father has no custody, the child does not bear his name and does not inherit from him. That does not shield the father from maintenance, however: the child can have paternity established by a court action and a DNA test and claim maintenance retroactively. If the father does not pay, the state steps in with a maintenance advance and recovers the money from the father. Whoever, conversely, hastily acknowledges a child that is not theirs ties themselves to maintenance duties that can be undone only within tight deadlines. Less obvious: an unsettled paternity can become a problem years later for inheritance, nationality or social benefits.
📎 Official sources
- Office of Social Services — acknowledgement of paternity (national administration) →
- Serviceportal Liechtenstein — paternity and descent (national administration) →
- LILEX — General Civil Code (ABGB, LR 210.0) (legal register) →
❓ Frequently asked
Am I as the husband automatically the legal father?
Yes, with married parents the husband of the mother counts as father by statutory presumption. Under the ABGB this presumption even runs for up to 302 days after dissolution of the marriage by divorce, separation or death of the father.
How do I as an unmarried father acknowledge my child?
The Civil Registry Office reports the birth to the Office of Social Services, which invites you to sign the acknowledgement. The Princely Court of Justice then approves the acknowledgement, and it is entered in the register.
Does a child born out of wedlock have fewer rights?
No, for kinship and inheritance Liechtenstein makes no difference between children born in and out of wedlock. What matters alone is that paternity is legally established, whether by presumption, acknowledgement or a court.
What if the father refuses to acknowledge?
Then paternity can be established by a court action, as a rule based on a DNA test. With the final establishment the child gains maintenance and inheritance claims against the father and his relatives.
Is the period really different from Switzerland?
Yes, the Liechtenstein ABGB names 302 days after dissolution of the marriage for the presumption of paternity. The Swiss ZGB, by contrast, assumes 300 days, because Liechtenstein follows Austrian and not Swiss law here.
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