The purpose of this book is to discuss the possibility of applying the emergency protective measures provided for in the Maria da Penha Law to the aggressor without being linked to criminal proceedings. The debate is justified in view of the lack of definition by the Brazilian legal system of the nature of these measures. The research is based on analysing and understanding the case study carried out in Special Appeal (REsp) No. 1.419.421 from the state of Goiás.