In the article the essence of the concept of “intellectual capital” is determined. The role and importance of intellectual capital in innovative economic development of individual countries is shown. The degree of mobility of inventors worldwide is investigated. Countries, which are considered as leaders according to the amount of immigrant inventors, are determined (USA, Germany, Switzerland). It is specified that a higher rate of immigration is appropriate for academic institutions. The largest outflow of inventors, who gradueated from colleges, comes from Latin America and the Caribbean, and especially Africa. It is determined that inventors immigrants are more effective in their work compared to their compatriots who remained at home. According to patent data of applications for inventions under the PCT procedure analysis of international migration of intellectual capital (for example, professionals working in the field of knowledge - scientists and inventors) is prodived. The influence of intellectual capital on the economy, innovative development and economic security is surveyed. Migration channels and flows are analyzed, migration corridors for the outflow of scientist and engineers- inventors are revealed, measures of emigration, “brain drain” and inventors migration are determined. Geographical pattern of migration of highly skilled specialists, analysis of the migration of intellectual capital in Ukraine is presented, recommendations about appropriate organizational and economic mechanism of regulation in this area are provided. The “outflow” of the intellectual capital of Ukraine to developed coutries is analyzed, a list of main host countriesis fixed. Examples of Ukrainian scientists who achieved recognition abroad are shown Lack of economic incentives (tax, credit, insurance) on the creation and commercialization of intellectual property objects in order to organise a civilized market of these objects is proved. 

inventor, brain drain, intellectual capital, innovative development, human capital, migration