Vassar College Digital Library

Vassar Scholarship

Vassar Scholarship, the institutional repository formerly known as Digital Window, reflects the research and scholarly output of the Vassar College community.  It provides access to a variety of collections, including senior theses and projects across a wide range of disciplines.

Credibility and credulity: how beliefs about beliefs affect entry incentives

Publication Date
2006-November-13
Document Type
Department or Program
Document Type
Abstract

In this note we investigate the infringement (entry) decision for a firm facing an incumbent patent holder with uncertain patent rights. The entrant risks a dispute by entering, resulting in either a settlement (licensing) or litigation and trial. Using the...

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Learning by suing: structural estimates of court errors in patent litigation

Publication Date
2006-November-07
Document Type
Authors
Department or Program
Document Type
Abstract

This paper presents structural estimates of the probability of validity, and the probability of Type I and Type II errors by courts in patent litigation. Patents are modeled as uncertain property rights, and implications of the model are tested using...

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Patent protection, creative destruction, and generic entry in pharmaceuticals: evidence from patent and pricing data

Publication Date
2005-October-28
Document Type
Authors
Department or Program
Document Type
Abstract

This paper merges patent citation data with data on pharmaceutical patent expirations, generic entry, and pricing to explore the effects of observable patent characteristics on off-patent and on-patnet pharmaceutical pricing. Using a sample of drug patents facing generic entry in...

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The dynamics of patent citations

Publication Date
2006-July-03
Document Type
Authors
Department or Program
Document Type
Abstract

The use of patent citations as a measure of patent "quality" increased dramatically in recent years. I estimate the hazard of patent citation, and find evidence of unobserved heterogeneity. Hazard estimation provides a means to separate patent quality from citation...

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The value of certainty in intellectual property rights: stock market reactions to patent litigation

Publication Date
2005-November-15
Document Type
Authors
Department or Program
Document Type
Abstract

Using a sample of patents litigated between 1977 and 1997, I estimate stock market reactions to patent litigation decisions and to patent grants. I find that the resolution of uncertainty over validity and infringement is worth as much to the...

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