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....

We show the effect of patent protection on R&D investment in presence of‘inventing around’ (or imitation) and technology licensing...

The UK’s business R&D (BERD) to GDP ratio is low compared to other leading economies,and the ratio has slowly declined over the 1990s. This paper uses data on large UK firms toanalyse the link between R&D and productivity over the 1989-2000 period. Using aproduction function approach, and a...

This paper analyses market valuations of UK companies using a new data set of their R&Dand IP activities (1989-1999). In contrast to previous studies, the analysis is conducted at thesectoral level, where the sectors are based on the technological classification in Pavitt (1984).The first main...

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...