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Full-Text Articles in Law
Prior Art In Inter Partes Review, Stephen Yelderman
Prior Art In Inter Partes Review, Stephen Yelderman
Journal Articles
This Essay is an empirical study of the evidence the Patent Trial and Appeal Board relies upon when cancelling patents in inter partes review. To construct our dataset, we collected every final written decision invalidating a patent claim over a twelve-month period. We coded individual invalidation events on a reference-by-reference, claim-by-claim basis. Drawing on this dataset, we report a number of details about the prior art supporting patent cancellation, including the frequency with which U.S. patents, foreign patents, and printed publications were cited, the frequency with which the invalidating prior art would have been amenable to a pre-filing prior art …
Prior Art In The District Court, Stephen Yelderman
Prior Art In The District Court, Stephen Yelderman
Journal Articles
This article is an empirical study of the evidence district courts rely upon when invalidating patents. To construct our dataset, we collected every district court ruling, verdict form, and opinion (whether reported or unreported) invalidating a patent claim over a six-and-a-half-year period. We then coded individual invalidation events based on the prior art supporting the court’s analysis. In the end, we observed 3,320 invalidation events based on 817 distinct prior art references.
The nature of the prior art relied upon to invalidate patents informs the value of district court litigation as an error correction tool. The public interest in revoking …