Key Finding: This chart presents, per fiscal quarter, the percentage of claims that were found unpatentable or cancelled out of those challenged by the petitioner in CBM proceedings that reached final written decisions. The sample sizes for some quarters were small. This data does not account for overall redundancies in patents challenged, as it examines each quarter’s challenges independently from each other quarter. The listed periods are for final written decisions. The analyzed decisions not to institute are from one year earlier.