We investigate the stability of cooperative relationships between inventors and consequences for the characteristics and patent productivity of the respective regional innovation systems (RIS). The empirical analysis is for nine German regions over a period of 15 years. We find a rather high...

The development of inventor networks is characterized by the addition of a significant number of new inventors, while a considerable number of incumbent inventors discontinue. We estimate the persistence of knowledge in regional inventor networks using alternative assumptions about knowledge...

The role of patent law and patent practice especially in biotech has gained considerable attention of late as there are concerns that innovative efforts are stifled rather than fostered by intellectual property in the area. In this essay we survey some of the difficulties encountered in biotech...

We model “patent privateering”—whereby producing firms sell patents to patent assertion entities (PAEs) which then license them under the threat of litigation—in a bargaining game. PAEs can negotiate higher licensing fees than producing firms, because they cannot be counter-sued for...

The development of inventor networks is characterized by the addition of a significant number of new inventors, while a considerable number of incumbent inventors discontinue. We estimated the persistence of knowledge in the inventor networks of nine German regions using alternative assumptions...

It is more than 25 years since the authors of the Yale and Carnegie surveys studied how firms seek to protect the rents from innovation. In this paper, we revisit that question using a nationally representative sample of firms over the period 2008-2015, with the goal of updating and extending a...

We investigate patent litigation, settlements and R&D incentives on a market where two firms develop technologies of differentiated products. Firms may sell IP rights to a Patent Assertion Entity (PAE) that acts as intermediary for patent monetization. We find that the effects of this so-called...

This paper studies how the assignment of patents as collateral determines the savings of firms and magnifies the effect of innovative rents on investment in research and development (R&D). We analyse the behaviour of innovative firms that face random and lumpy investment opportunities in R&D....

Compulsory licensing allows firms in developing countries to produce foreign-owned inventions withoutthe consent of foreign patent owners. This paper uses an exogenous event of compulsory licensingafter World War I under the Trading with the Enemy Act to examine the long run effects of...

This paper presents an overview of co-patenting trends at the national and regional level in three technology fields (biotechnology, telecommunications and renewable energy), across regions in the OECD and emerging economies, from the late 1970s to the late 2000s. After a general introduction on...