Harhoff, Dietmar; Hoisl, Karin; Reichl, Bettina; van … - In: Research Policy 38 (2009) 9, pp. 1423-1437
One feature of the European patent system that is heavily criticized nowadays is related to its fragmentation and the induced cost burden for applicants. Once a patent is granted by the EPO, the assignee must validate (and often translate) it and pay the renewal fees to keep it in force in each...