Under the America Invents Act IPRs are supposed to be completed with a final written decision no later than a maximum of 18 mos after institution. But if the FedCir remands for further findings on appeal can the PTAB issue a decision on remand past the 18 mos? “Yes” says the USPTO, and in a recent brief it argues why it can:

http://www.reexamlink.com/wp-content/uploads/2018/03/uspto-brief.pdf …