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Intellectual Property Law

Columbia Law School

2012

Patent prosecution

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A New Look At Patent Quality: Relating Patent Prosecution To Validity, Ronald J. Mann, Marian Underweiser Jan 2012

A New Look At Patent Quality: Relating Patent Prosecution To Validity, Ronald J. Mann, Marian Underweiser

Faculty Scholarship

The article uses two hand‐collected data sets to implement a novel research design for analyzing the precursors to patent quality. Operationalizing patent “quality” as legal validity, the article analyzes the relation between Federal Circuit decisions on patent validity and three sets of data about the patents: quantitative features of the patents themselves, textual analysis of the patent documents, and data collected from the prosecution histories of the patents. The article finds large and statistically significant relations between ex post validity and both textual features of the patents and ex ante aspects of the prosecution history (especially prior art submissions ...