Basic provisions of the concept of advocate’s investigation

Purpose: Formulation of basic provisions of the concept of lawyer investigation. Methodology: Historical and legal, comparative and legal and formally legal methods were used. Results: Article represents generalization of the main conclusions and provisions of dissertation research of the author based on the original concept of lawyer investigation as a universal remedy of legal protection and the main mechanism of realization of a constitutional right on receiving the qualified legal aid which is carried out by independent and independent collecting by the lawyer of the proofs allowed for justification of a position of the principal by consideration of any legal dispute by judicial, administrative and other representatives to bodies and persons. Novelty/originality/value: Article has the high scientific value as is one of the first attempts to consider history of development of domestic legal profession through a prism of evolution of institute of the professional rights of the lawyer defender.