A report on the roles female and male litigators play in Chicago’s federal court shows that women are often standing in the wings. Men are more likely to be assigned the lead in civil and criminal litigation, the report released today says, while women are more likely to be relegated to a supporting role. But the report suggests ways actors in the system — law schools, law firms, clients, judges and female lawyers themselves — can rewrite the script.Stephanie A. Scharf of Scharf, Banks, Marmor LLC is confident more women …