Looking at the USPTO docs, I can only find the Attorney of the Requester which was Patterson & Sheridan LLP for both patents. However, they only represent defendants HTC Corporation and HTC America, Inc. as far as I can tell.

In case anyone didn't know, Schwegman, Lundberg and Woessner, P.A. is the firm representing EDIG in the re-exams.

http://www.slwip.com/