This paper shows an overview of legal research from the expertise and the views positivisantes trifurcation inserted on the right.Describes the main ideas about the right to, from this, locate the proper field of legal research, to distinguish it from studies that may be in the cantons of political philosophy or sociology of law.Thus, it is believed possible to provide a clearer view of the main elements that revolve around the topic of research in law, and legal research.