This article presents a conceptual view on multiparenthood and socio-affective paternity as a procedure, the differences between bonds, hypotheses of appropriateness, and the definition of the term of filiation status, its requirements, its legal provision, and jurisprudential studies. Furthermore, it seeks to inform how this topic operates in the judicial process, collecting data and indicating numbers through a survey at the Court of Justice of the State of Paraná to determine how many cases had multiparentality or the socio-affective bond confirmed and their respective grounds that gave rise to these decisions. The method used is inductive and this research is both qualitative and quantitative, seeking to show opinions and perceptions beyond numbers and delving deeper into research in a more exploratory way to bring information about this topic, with bibliographic and documentary research techniques, since this topic delves into both laws and investigations and their decisions. Ultimately, we intend to bring these results to evaluate the possibility of regulation in the legal system, whether this law would be necessary, or whether supervision correctly and efficiently controls this role for the declaration of multiparenthood.