Some of the reports most interesting findings involve which entities are most active at the PTAB as well as the law firms representing parties most frequently during PTAB proceedings... Statistics on administrative patent judges (APJs) at PTAB also render some interesting findings. The four most experienced APJs at PTAB each have more than 400 trials’ worth of experience while some APJs have far fewer cases in which they’ve served. Although the concentration of patent cases in the dockets of a few judges in U.S. district courts has been a topic of much discussion, statutory rules on requests for joinder in IPR proceedings may be naturally causing a concentration of PTAB cases in terms of judges deciding those cases. The PTAB report notes that it’s not unusual for judges to have 20 to 50 cases open at one time.
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