German mother wins paternity case using brother's DNA after father's death

A woman in Germany has successfully proven biological paternity for her two sons after a genetic test along the male line. The case involved forensic specialists collecting DNA from the children and the presumed father's brother. This result now allows her to pursue legal recognition of the man as their father.

The woman's legal challenge began because the children's presumed father had died without formally acknowledging them. Since the parents were never married, no automatic legal father existed under German law. Without this recognition, the sons would have no claim to survivor's pensions or inheritance rights.

Forensic experts faced a hurdle: the father's own biological samples were unavailable. Instead, they tested his brother's DNA and compared it to samples from the two boys. A direct test through the grandmother was impossible because the children are male—boys inherit the Y chromosome only from their biological father.

The genetic analysis confirmed kinship along the male line. This finding provides the evidence needed for the woman to seek legal paternity recognition under § 1592 BGB. If granted, the sons will qualify for survivor's pensions from their father's pension insurance and inherit as statutory heirs.

The confirmed biological link now allows the woman to move forward with her legal case. If the court recognises the man as the legal father, her children will gain access to financial support and inheritance rights. Without this ruling, such claims would remain blocked under German law.