A federal judge, invoking a judicial privilege to freely deliberate on matters, refused to disqualify the special master in the opioid multidistrict litigation.

In a Tuesday order, U.S. District Judge Dan Polster rejected a motion filed last month by two pharmacy benefit managers to disqualify David Cohen after the special master inadvertently sent an email to lawyers in the case. Cohen, who meant to send the email to himself, has been a special master in the opioid multidistrict litigation since 2018.