US v. Rehlander.
Long story short, a man was involuntarily committed to a mental institution ex parte. Meaning that he wasn't there when they did it, nor was his lawyer. Later we was arrested charged and convicted of being in possession of a firearm by a prohibited person. He appealed the ruling where it landed at the 1st circuit. The first circuit just ruled that his 2A rights cannot be taken away without him having and advocate at the proceeding. The brief (over 100 pages) and opinion are attached.