This figure shows PGR institution rates by invalidity challenge type under §§ 101, 102, 103, and 112 (indefiniteness, written description, and enablement). Where there were multiple challenge types in a petition each was reviewed separately. Infrequently raised invalidity challenges such as improper narrowing of dependent claims, ornamentality and double-patenting were not included in our analysis due to the limited data available for those challenges.
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