Paternity: From Acknowledgement to Procedural Clarification
The legal assignment of paternity forms the foundation for numerous rights and obligations within a family. While maternity is directly linked to the biological process of birth pursuant to Section 1591 BGB, paternity in the German legal system follows a complex web of legal presumptions, voluntary declarations, and judicial decisions. Since biological and legal paternity are not necessarily identical, complex issues often arise in practice affecting custody, access, maintenance, and inheritance rights. Clarifying this status is therefore often essential to establish legal certainty for all parties involved.
Voluntary Acknowledgement of Paternity for Unmarried Parents
In cases where parents are not married at the time of birth, the legal presumption of paternity of the husband does not apply. Here, the Acknowledgement of Paternity pursuant to Section 1594 BGB provides the primary route to establishing a legally binding bond with the child. This formal legal transaction requires a personal declaration by the father and the express consent of the mother. Acknowledgement can take place prenatally (before birth) and must be publicly notarised by a Youth Welfare Office (Jugendamt), a Registry Office (Standesamt), or a Notary. While notarisation at the Youth Welfare Office is free of charge, costs may be incurred at other institutions.
​
Upon effective acknowledgement, the man becomes the legal father ex tunc (retrospectively to the time of birth). This triggers significant consequences: in addition to the statutory duty to provide child maintenance and a potential claim for childcare maintenance by the mother (Section 1615l BGB), it creates the basis for joint custody and statutory inheritance rights. Furthermore, the child may gain advantages regarding nationality law. It is important to understand that acknowledgement can also be made by a man who is not the biological father, provided that no other legal paternity exists.
Judicial Establishment of Paternity
If a consensual acknowledgement fails—for example, because the mother refuses consent or the potential father denies responsibility—the law provides for Paternity Establishment Proceedings pursuant to Section 1600d BGB. These proceedings are only admissible if no other legal paternity currently exists for the child. The mother, the child, and the man who considers himself the father are all entitled to file an application.
​
Within these proceedings, paternity is formally established by the Family Court. A DNA parentage test usually serves as the decisive evidence. By law, the parties are obliged to cooperate in the required sampling, and such cooperation can be judicially enforced if necessary. Once the court order becomes final, all parental rights and obligations arise retrospectively from birth.
Contesting Paternity
Conversely, the Contestation of Paternity pursuant to Sections 1600 et seq. BGB serves to remove an existing but biologically incorrect paternity. This is particularly relevant if a husband or a man who has acknowledged paternity has justified doubts about his biological fatherhood, for example, due to infertility or knowledge of the mother's intercourse with another man at the time of conception. The law attaches a strict two-year time limit to this claim, which begins the moment the person entitled to contest becomes aware of the circumstances speaking against his paternity.
​
Successful contestation proceedings result in the man being legally treated as if he had never been the father. Consequently, custody and the duty to pay maintenance cease for the future. Furthermore, the successful conclusion of the proceedings allows the so-called "putative father" (Scheinvater) to seek recourse from the actual biological father for maintenance payments already made. In this context, the mother is obliged to provide information regarding the identity of the presumed biological father, provided this is necessary to enforce such claims and is reasonable for her.
Adoption: Legal Framework and Procedures for Establishing Parenthood
Adoption represents one of the most far-reaching measures in German family law. It establishes a full legal parent-child relationship between persons who are not biologically related in a direct line. Upon the final order of the Family Court, a new kinship relationship is created which, in its effects, is equivalent to biological descent. In legal practice, a fundamental distinction is made between the adoption of minors and the adoption of adults, as both procedures are subject to different requirements and entail different legal consequences.
Requirements and Legal Consequences of Adopting Minors
In the adoption of minor children, the welfare of the child (Kindeswohl) is the paramount consideration for the court. Pursuant to Section 1741 BGB, the adoption must serve the child's welfare, and there must be a reasonable expectation that a stable parent-child relationship will develop. Such a process is usually preceded by an appropriate period of "adoption placement" (Adoptionspflegezeit), during which the suitability of the prospective parents and their bond with the child are intensively monitored by the relevant authorities. A core element of the procedure is the required consent of the biological parents and the child itself. Upon completion of the adoption, the kinship relationship with the family of origin is completely extinguished, while all maintenance and inheritance ties to the new family are established.
Stepchild Adoption in Modern Family Models
A special and frequent form of adoption in legal practice is Stepchild Adoption. This involves a spouse or civil partner adopting the child of their partner to legally secure an existing social family unit. This is particularly relevant in "patchwork" constellations or same-sex couples to grant the social parent full rights regarding custody and maintenance. Unlike third-party adoption, the kinship relationship with the parent to whom the adopter is married remains unaffected; only the bond with the other biological parent is legally terminated.
Specifics and Motives for the Adoption of Adults
The adoption of adults follows different principles, as it primarily serves to legally codify an existing bond between adults. Such an adoption is permissible if it is "morally justified," which the law assumes particularly if a de facto parent-child relationship has already been established. A key difference from the adoption of minors is that the legal effects are generally "weaker" unless an application is explicitly made for the adoption to carry the effects of a minor adoption. Usually, the kinship with the biological parents is not extinguished, which can lead to a cumulation of inheritance claims. Nevertheless, the adoption has full effect regarding the family name and the creation of mutual maintenance obligations.
International Adoption and Recognition Procedures
In addition to domestic cases, international adoptions are steadily increasing in importance. These are subject to strict formal requirements, particularly the regulations of the Hague Adoption Convention, to ensure child protection and compliance with international standards against child trafficking. The recognition of foreign adoption orders in Germany is a procedurally demanding field requiring an exact examination of the respective national laws and the recognition requirements under the Adoption Effects Act (Adoptionswirkungsgesetz). DR. SCHMIDT LEGAL supports clients in navigating these complex procedures, providing precise justifications for applications to the Family Court and proactively managing the far-reaching consequences regarding naming, nationality, and inheritance law.

