The TheraSense en banc order states that “amicus briefs may be filed without leave of court but otherwise must comply with Federal Rule of Appellate Procedure 29 and Federal Circuit Rule 29.” Although I would have guessed that this statement relieved amicus filers from the requirement of seeking permission of the parties or filing a motion, the Federal Circuit clerk is apparently requiring that amici either (1) obtain consent from all parties, or (2) if fewer than all parties consent, submit a motion to the court for permission to file the brief. Several amicus briefs filed in the case have apparently been rejected for failure to comply with these requirements.
This information comes from Professor Christian Mammen (visiting at Hastings). Mammen is drafting a brief in TheraSense that argues three primary points: (1) that materiality should focus on patentability issues, and should defer to the PTO's Rule 56; (2) that there should be an increased focus on the clear and convincing standard of proof for intent (with corollaries that "should have known" and "gross negligence" should be abolished, and the Star Scientific "single most reasonable inference" test is a good starting point); and (3) if there is a sufficient increase in the required thresholds for both materiality and intent, the balancing step (which is often ignored in any event) may be abandoned. Legal academics or others potentially interested joining his brief should contact him at email@example.com.