This paper surveys empirical studies employing trade mark data that exist in the economic literature to date.  Section 1) documents the use of trade marks by firms in several advanced countries including Australia, the United Kingdom and the United States, 2) reviews different attempts to gauge...

A common assumption in innovation policy circles is that creative and inventive firms will help to sustain employment and wages in high wage countries. The view is that firms in high cost production locations that do not innovate are faced with loss of market share from import competition, so...

This paper surveys empirical studies employing trade mark data that exist in the economic literature to date. Section 1) documents the use of trade marks by firms in several advanced countries including Australia, the United Kingdom and the United States, 2) reviews different attempts to gauge...

A common assumption in innovation policy circles is that creative and inventive firms will help to sustain employment and wages in high wage countries. The view is that firms in high cost production locations that do not innovate are faced with loss of market share from import competition, so...

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'...

This paper introduces a model of coordination of research paths into the theory of Research Joint Ventures (RJVs). A comparison of RJVs and licensing by non-cooperative firms shows that the latter may be unable to co-ordinate on complementary research paths whereas RJVs are always able to do...

Post-grant validity challenges at patent offices rely on the private initiative of third parties to correct mistakes made by patent offices. We hypothesize that incentives to bring post-grant validity challenges are reduced when many firms benefit from revocation of a patent and when firms are...

Licensing in a patent thicket allows firms to either avoid or resolve hold-up. Firms’ R&D incentives depend on whether they license ex ante or ex post. We develop a model of a patent portfolio race, which allows for endogenous R&D efforts, to study firms’ choice between ex ante and ex post...

This Paper examines which firms from a heterogeneous pool are more likely to join together and form a research joint venture (RJV). It differs from previous contributions as it introduces a set of realistic hypothesis on the characteristics of research co-operation and information sharing....