identifying assumptions. Second, it presents estimates of the effect of patent protection on the depreciation rate. Results … suggest that the depreciation rate is in the 2–7 per cent range. Inventions for which a patent is granted are associated with …This paper presents estimates of the depreciation rate of innovations using survey data on revenues associated with …

on the effects of the patent stock on profitability. The database is a representative sample of German manufacturing … patent stock has a strong and robust effect on profitability …

This chapter summarizes the basic characteristics of patent data as an innovation indicator and reviews some of the … recent research using patent data, focusing on major developments since Griliches in 1990 [Griliches, Z. (1990). “Patent … availability of patent data on an increasingly global scale and the accompanying global spread of research using patent data. The …

invention or innovation cannot be guaranteed. Our main aim is to examine the relationship between business R&D expenditure …, invention and innovation in the long-run. We also examine the level of business R&D expenditure in EU countries. The long …The paper deals with the problem of business spending on research and development and their relation to innovation …