I went onto the court website myself, and it does appear Watchtower did not submit a brief. I can't confirm the other info Richard Oliver states without paying a small amount of money. (Or perhaps there is another way, but the website is unwieldy.)
Another possible reason Watchtower may not have submitted a brief is that there has been a settlement in the last week or so, pending payment of an amount. What may happen is that the parties settle, but the Court isn't notified until the amount of the settlement is paid across.