I examine the joint patent designation-renewal behavior of the EPO patent applicants during 1978 to 1996, using both nonparametric technique and a parametric model. The European patents through the EPO are substantially more valuable than patents through the national route. Value distributions...

Patent system in Europe has undergone significant changes during the 1970s around the establishment of the European Patent Office (EPO), and this paper tries to quantify the influence of such policy changes on the private value of European patents. Based on the patent renewal records, I estimate...

The economic implications of international patent harmonization have attracted little empirical scrutiny. Based on patent application and renewal data in major European countries since the early 1980s, this paper examines the empirical relationship between international patenting, R&D, and the...

This paper utilizes the renewal records of the EPO (European Patent Office) patents and estimates the patent value distributions in Germany, France and the U.K. We extend the patent renewal study for the same three countries in Pakes (1986) by examining how the possible patent infringments...

This paper aims at quantifying the economic value of knowledge spillovers by exploring information contained in patent citations. We estimate a market valuation equation for semiconductor firms during the 1980s and 1990s, and find an average value in the amount of $0.6 to 1.2 million...

This paper formulates a dynamic stochastic model to examine the joint patent application and renewal behavior under an international patent protection regime. This framework makes it possible to utilize both the cross-sectional (multi- country filing) and the time-series (patent renewal)...