We document high economy-wide correlations between the Equity Risk Premium (ERP) and the aggregate volume (rho=-0.69) and value (rho=-0.75) of patenting activity by public firms in the United States over the 1977-2018 period, contradicting Schumpeter's (1939) opportunity-costs hypothesis of...

We investigate the contribution of different inputs, particularly different knowledge sources,on regional patenting output in the framework of a knowledge production function. Theknowledge sources included are R&D employment, size of public research institutions byfield of research (budget),...

A set of U.S.-based companies is investigated regarding the effectiveness of intellectual property protection mechanisms (IPPMs) in the formation of research partnerships. Patents are the most frequently used IPPM to protect both background and foreground knowledge in partnerships. Other IPPMs...

Modeling the spatial aspect of growth has finally become an important subject of economics as exemplified by the increasing popularity of the new economic geography. However, new economic geography models have still not been able to develop a consistent approach to integrate innovation, space...

In an experimental setting, firms in a duopoly market engage in a patent tournamentand compete for profit-enhancing product advancements. The firms generateincome by matching exogenously defined demand preferences with an appropriatelycomposed product portfolio of their own. Demand preferences...

An important discussion in recent years is the introduction of product patentsand the abolition of process patents. In a model with endogenous number of innovatingfirms, we show that whether product patent increases R&D is ambiguous, and depends onthe type of market demand and the cost of R&D....

It is shown that spillovers can enhance private returns to innovation if they feedback into the dynamic research of the original inventor (Internalized spillovers), butwill always reduce private returns, if the original inventor does not benefit fromthe advancements other inventors build into...

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...

We develop a dynamic duopoly model of R&D competition to improve the quality of a finalgood. The innovation process is sequential and cumulative, and takes place alongside productionin an infinite-horizon setting. In this context we study the R&D incentive impacts resultingfrom a “research...

Recent surveys report that firms claim they do not rely heavily on patents in order toappropriate a return on their innovation. Yet, firms do patent, as indicated by the largenumber of patents that are granted. This paper offers a possible resolution to this puzzle.It takes a simplified version...