The book deals with the expansion and institutionalization of intellectual property norms in the twentieth century, with a European focus. Its thirteen chapters revolve around the transfer, adaptation and the ambivalence of legal transplants in the interface between national and international projects, trends and contexts. After discussing the institutionalization of copyright and patent law in the framework of the bigger political and economic projects of the twentieth century in the first part, the second and third parts of the collection review relevant processes in the communist regimes and the post-communist societies respectively. The essays point at processes of enculturation, trans-nationalization and universalization of norms, as well as practices of incorporation and resistance. The contributors lay a particular emphasis on the role and activity of social actors in the establishment and validation of intellectual property norms and regimes, from the function of experts and creation of expert cultures to the compelling power of popular street protests.