Biasus, Alessandra ReginaCassol, Bárbara Menegat2025-03-202024https://repositorio.uricer.edu.br/handle/35974/804This paper analyzes the (im)possibility of a spouse married under the regime of conventional separation of property to compete with descendants in Brazilian inheritance law, as well as examining rulings from the Superior Court of Justice (STJ). From a doctrinal and jurisprudential approach, the study aims to discuss the interpretive divergences of Article 1,829, I, of the Civil Code that involve the succession position of the spouse, especially concerning conventional separation of property. To achieve the proposed objectives, the inductive method was employed, based on bibliographic, doctrinal, and legislative research, as well as the analysis of relevant articles and documents. The paper highlights the legal nuances and the impact of the decisions of the Superior Court of Justice (STJ) in consolidating understandings on the subject, fostering a critical reflection on legal certainty and the protection of the autonomy of the spouses’ will within the context of inheritance law.pt-BRDireitoDireito sucessórioSeparação de bensJurisprudênciaTrabalho de Conclusão de Curso