Stock Photo - 26 September 2023, Baden-Württemberg, Karlsruhe: The First Senate of the Federal Constitutional Court, (l-r) Miriam Meßling, Heinrich Amadeus Wolff, Josef Christ, Henning Radtke, Stephan Harbarth, Chairman of the Senate and President of the Court, Yvonne Ott, Ines Härtel and Martin Eifert, open the oral proceedings in the matter of ""Regulations on Challenging Paternity"". Currently, biological fathers have no right to challenge paternity if, according to the family court, there is a social-family relationship between the child and the legal father, i.e. the man bears responsibility for the child. Photo: Uli Deck/dpa. - Karlsruhe/Baden-Württemberg/Germany