This paper studies technological change in renewable energies, providing empirical evidence on the determinants of innovative activity with a special emphasis on the role of knowledge spillovers. We investigate two major renewable energy technologies-wind and solar - across a panel of 21 OECD...

This paper studies technological change in renewable energies, providing empirical evidence on the determinants of innovative activity with a special emphasis on the role of knowledge spillovers. We investigate two major renewable energy technologies - wind and solar - across a panel of 21 OECD...

Expenditures devoted to research and development (R&D) are scarce and thus need to be used as efficiently as possible given the financial constraints countries are facing. This paper assesses the relative efficiency of R&D expenditures for 26 OECD member countries and 2 non-member countries. As...

The intellectual breakthrough contributed by the new growth theory was the recognition that investments in knowledge and human capital endogenously generate economic growth through the spillover of knowledge. Endogenous growth theory does not explain how or why spillovers occur. The missing link...

This Paper discusses a number of issues in the context of the debate on intellectual property in less developed countries (LDCs). It starts by discussing the consequences of IP enforcement in LDCs for global innovation and welfare in poorer countries. It then considers the costs and benefits of...

This paper studies the diffusion of a new technology that is brought to market while its potential is still uncertain. We consider a dynamic game in which firms improve both a new and a rival old technology while learning about the relative potential of both technologies. We use the model to...

This paper is a study of licensing in a patent thicket. In a patent thicket licensing allows firms to avoid hold-up. It will have different effects on firms' R&D incentives depending on whether firms license existing or future patents. Building on a model of a patent portfolio race, firms'...

A few recent contributions have claimed that in high-tech industries—where innovation is often cumulative and products include many components which are protected by patents in the hands of many different patent holders—the cost of obtaining all necessary licenses is too high. Some have even...

This Paper surveys the economic literature on the impact of trade unions on innovation. There are many theoretical routes through which unions may have an effect on innovation, for example through their effects on relative factor prices, profitability and their attitudes towards the introduction...