This paper aims to provide insights into the phenomenon of knowledge flows. We study one of the main mechanisms through which these flows occur, namely, the mobility of highly-skilled individuals. We focus on the geographical mobility of inventors across European regions. Thus, patent data are used to trace the pattern of inventors' mobility across European regions, to track down focuses of attraction of talent throughout the continent, and to study their distribution across the space. To do so, we gather information from PCT patent documents and we first match the names which seemed to belong to the same inventor and then we create a new algorithm to decide whether each patent applied for under each name belongs to the same inventor. Copyright (c) 2010 the author(s). Journal compilation (c) 2010 RSAI.