In 2015, a British court heard a case that became a precedent. A man had helped a female acquaintance conceive — he provided sperm personally, without clinic involvement. Between them was a written agreement: he was a donor, with no parental rights or obligations. The woman subsequently went to court seeking child maintenance. The court awarded it — despite the agreement. He was recognised as the legal father, and no private arrangement could change that.
This case is not exceptional. It demonstrates a fundamental principle operating in most legal systems: biological kinship creates legal consequences that cannot always be eliminated by contract. This must be understood before a decision about donation is made.
In many countries, a sperm donor's legal status is determined primarily by the channel through which the material was provided. Donation through a licensed clinic — generally means a protected legal status: the donor is not a legal father, has no parental rights and bears no parental obligations. This principle is enshrined in the legislation of the UK, Netherlands, Germany, Denmark, France, Spain and most other developed jurisdictions.
Donation outside a clinic — that is, direct transfer through personal acquaintance or a platform — is legally unpredictable. Depending on the country, the man may be recognised as a legal father automatically (as in the UK), or on the mother's application, or by court order — or not recognised as a father at all, if the country's legislation provides for this.
United Kingdom. The Human Fertilisation and Embryology Act 2008 establishes: if a sperm donor went through a licensed clinic, he is not a legal parent. If not — he is the biological and potentially legal father, regardless of any agreement. UK courts have repeatedly awarded maintenance to donors who acted without a clinic.
Germany. The Samenspenderregistergesetz (SaRegG) 2018 created a sperm donor registry. Registration through a certified bank protects the donor from parental claims. Donation outside the registry is a legal grey zone where courts generally apply general paternity rules.
France. Since the 2021 bioethics reform, sperm and egg donation is permitted only through accredited medical centres. A registered donor is protected from parental claims.
Spain. Law 14/2006 explicitly states: a donor acting through an accredited centre has no parental rights or obligations whatsoever.
Donor without parental intentions. The man wants to help a woman he knows or found through a platform, without claiming the role of father. The risk: if the donation does not go through a clinic, he may be recognised as the legal father regardless of intent. The only reliable protection is a clinic.
Donor with limited involvement. The man and the woman agree that he will have some presence in the child's life — as a 'known donor', not a father. This requires a detailed written agreement and, ideally, involvement of a lawyer specialising in reproductive law before conception.
Donor as co-parent. The man wants to participate in raising the child together with the mother. In this case, the question of legal parenthood becomes central: the man should consider formally establishing paternity. This is a different type of arrangement with very different legal implications.
A private agreement between a donor and a recipient can record intentions. But in most countries, it cannot override the law on parental rights. Courts deciding on a child's welfare are not bound by private contracts between adults. A contract is evidence of intention — not a guarantee of outcome.
The donor's legal status is not just a matter of intentions. It is a legal question answered differently depending on the country, the channel of material transfer and the specific circumstances. The only way to manage this uncertainty is to know the law of one's own country and consult a lawyer before conception. Acting without this knowledge is a significant risk — not just for the donor, but for the child and the recipient.
Legal paternity — the officially recognised status of being a child's father, carrying rights and obligations.
Biological paternity — a man's genetic connection to a child; in many jurisdictions, the basis for establishing legal paternity.
Licensed clinic — a medical institution authorised to perform ART procedures; donation through such an institution generally protects the donor from parental claims.
Known donor — a sperm donor personally known to the recipient, as opposed to an anonymous bank donor.
Parental rights — legal rights and responsibilities in relation to a child, including custody, decision-making and maintenance obligations.
SaRegG — the German Samenspenderregistergesetz (Sperm Donor Registry Act) of 2018, establishing a national registry that protects registered donors from paternity claims.
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