The monograph examines the most important problems in the development of modern civil law, both at the doctrinal level and in the field of legislation, business and judicial arbitration practice. The directions and ways for the further development of Russian civil law in the conditions of the emergence of a market economy in the country are analyzed. increasing the social role of the state in the protection and defense of property and personal non-property rights of citizens and legal entities. The work also contains specific examples from the practice of state and arbitration (arbitration) courts. The publication is intended for researchers, teachers, students, practicing lawyers and all readers interested in problems of civil law and the creative nature of their solutions.