The paradigmatic defendant in a patent lawsuit is a vertically integrated manufacturer. But much economic activity is conducted collaboratively by a supply chain of vertically disintegrated firms, and sometimes multiple firms are implicated in infringing activities, by making, selling, or using...

This Article reviews empirical patent litigation research to reveal patent policy lessons. First, the Article presents facts about patent litigation. Next, it analyzes the patent premium. Patent litigation research reveals little about the magnitude of the patent premium, but the research...

This paper provides the first look at patent litigation hazards for public firms during the 80s and 90s. Consistent with our model, litigation is more likely when prospective defendants spend more on R&D, when prospective plaintiffs acquire more patents and when firms are larger and...

This paper estimates the total cost of patent litigation to alleged infringers. We use a large sample of stock market event studies around the date of lawsuit filings for US public firms from 1984-99. We find that the total costs of litigation are much greater than legal fees and costs are large...