Here is an update on recent en banc activity at the Federal Circuit in patent cases. Last week the Federal Circuit heard oral argument in one of the two pending en banc cases. With respect to pending petitions, two new petitions have been filed and the court denied one petition. One of the new petitions raises a question regarding claim construction; the other new petition raises a question concerning whether an abandoned patent application that becomes publicly available only after a challenged patent’s critical date is a printed publication that can be the basis for an inter partes review proceeding. The petition that was denied raised a question regarding apportionment of damages for patent infringement. Here are the details.