In this paper, we use evidence on the activity of US publicly traded firms from the early
1980s to the mid-1990s to investigate whether innovation–measured by patenting activity …

This paper examines how the relationship between firm value and patent-based indicators
of inventive activity has changed over time. We use data from more than 33,000 mergers …

Technologically radical innovations are a key success factor in many high technology
industries. This study examines how firms can measure performance on this key dimension …

We examine how firm age relates to innovtion quality, and how this relationship varies
depending on the nature of technology. Using data on patents of COMPUSTAT firms, we find …

In our 1987 and 1988 studies we provided empirical analyses of the first direct measure of
innovative activity. Previously, virtually every empirical study testing what LEVIN et al.[19851 …

This paper provides new empirical evidence on the patterns of technological entry and exit
across sectors and over time. We definenew'innovators—firms which innovate for the first …

We explore whether current innovation has an enduring effect on future innovative activity in
large, global food and beverage (F&B) companies. We analyze a sample of 16,698 patents …

Since around 2000, US aggregate productivity growth has slowed and product market
concentration has risen. To explain these facts, I construct a measure of innovativeness …

This paper looks at the probability of introducing innovations by manufacturing firms at
different stages of their lives. Once differences related to activity and size are controlled for …

Using data on all high-and medium-tech start-ups in the UK in 2000, this paper assesses the
effect associated with a firm's decision to patent on a firm's subsequent growth between …