This report explores the problem of "cluttering" of trade mark registers. The report consists of two parts:The first presents a conceptual discussion of “cluttering” of trade mark registers.The second part provides an exploratory empirical analysis of trade mark applications at the UK...

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...

We analyze the effect of patent thickets on entry into technology areas by firms in the UK. We present a model that describes incentives to enter technology areas characterized by varying technological opportunity, complexity, and the potential for hold-up due to the presence of patent thickets....

This report analyses whether entry of UK enterprises into patenting in a technology area is affected by patent thickets in the technology area.The aim is to contribute to our understanding of the role of patent thickets as a barrier to entry into new technologies for UK enterprises, in...

We analyze the effect of patent thickets on entry into technology areas by firms in the UK. We present a model that describes incentives to enter technology areas characterized by varying technological opportunity, complexity of technology, and the potential for hold‐up in patent thickets. We...