We study an infinite-horizon cumulative innovation model, in which patents are characterized bytheir length and the likelihood of being ruled valid in a patent infringement litigation. Strengtheningpatent protection via a greater validity or length has two opposing effects on innovation: 1)...

We develop a theory of innovation for entry and sale into oligopoly, and show that inventions of higher quality are more likely to be sold (or licensed) to an incumbent due to strategic product market effects on the sales price. Such preemptive acquisitions by incumbents are shown to stimulate...

When and how do entrepreneurs sell their inventions? To address this issue, we develop an endogenous entry-sale asymmetric information oligopoly model. We show that lowquality inventions are sold directly or used for entry. Inventors who sell post-entry use entry to credibly reveal information...

There is not a day goes by without a passionate debate concerning Big Tech companies; while the main concern of governments seems to be related to social justice, a growing worry is associated with the consequences that large firms have on consumer welfare; nowadays these big entities engage in...

Licensors of patents essential to a standard are often required to license on reasonable and non-discriminatory (RAND) terms. Using a model with owners of essential patents and licensees who invest into standard-conforming technologies, this paper demonstrates that the non-discriminatory...

A model of open innovation among competing firms is developed. Innovation is modelled as a dynamic sequential process where existing technologies advance through research. New technologies are incorporated into next generation of competing products. This model is implemented in an evolutionary...

This paper models the simultaneous investments in cost-reducing and environmental R&D by asymmetric firms competing à la Cournot. Pollution rights are allocated by the regulator, and firms can trade pollution permits. Both R&D competition and R&D cooperation are considered; in the latter case,...

In Chapter 2 we saw that the most economical locations for transactions in a task network are the so-called thin crossing points—places where transfers are easy to define, count and pay for. However, in many places in the task network, transfers of material, energy, and information are so...