Patent Quality and Examination in Europe
研究了欧洲专利局近年行政改革的效果，发现2008年新收费规则后专利权利要求数量下降、独立权利要求变长，但分案申请仍未被遏制，揭示了延迟选项的高私人价值。
This paper reports on effects of recent administrative reforms at the European Patent Office (EPO). In EPO-granted patents, claims numbers started to decline in 2008 when new claims fees became effective, claims sections in patents became shorter, and independent claims longer and presumably more specific. The grant rate remained at relatively low levels, but the EPO was unable to stem the use of divisional filings. The developments at the EPO point to a high private value of delay options. Delay may be achieved either by making use of explicit statutory rules or by other means, such as filing divisional applications.