In the field of biomedical science, in-vitro fertilization (IVF) makes it possible to artificially replace or modify certain biological processes that occur during human procreation. This scenario, which represents some favorable aspects, has externalized troubling ones as well, such as the dispute of embryos that happens when future parents separate and one of the parties refuses to allow the other to use his/her genetic material to conceive a biological child, a situation that may even lead to a legal battle. Taking this into account, a convergent resolution alternative is proposed from Bioethics, based on Ricardo Maliandi´s convergent ethics, which is characterized by an a priori knowledge of conflict under bidimensional considerations (foundation – critic), and supported by Karl Otto Apel´s ethics of speech, and the axiomatic ponderation of Nicolai Hartmann, looking to maximize the harmony of principles (MAP) in balance – unbalance conditions, within the contexts of the Individual – Universal and Conservation – Realization, which, when intertwined, result in a metaprinciple (guideline) to safeguard the human species under a legitimate conception.