A book examines the processes of adaptation of the system of guard of intellectual property to the necessities of digital environment and virtual economy in the conditions of the differently directed tendencies in European integration. Practical application of principle of субсидиарности in the right of intellectual ownership of European Union and creation of the two-tier system of defence of industrial property are investigated. Prospects are analysed completions of the Unitary patent court in the conditions of collaboration of Great Britain and ЕС after Brexit.For practicing lawyers, teachers, graduate students, students of faculties of law and institutions of higher learning, and also for all intellectual rights interested in an evolution in the conditions of digital economy and development of integration processes in Russia.