Use the standard court abbreviation

Warning²Federal courts, Illinois courts21st and 22nd editions

A court abbreviation keeps its settled form where it stands outside a citation: a numbered federal circuit is written one way whatever the year, and a district court is named by its district and not by the division.¹

1. 1R. 10.4(a) Federal courts. Tables: T1.1 Federal Judicial and Legislative Materials; T7 Court Names.
2. 2A warning: the form is usually wrong under the rule in note 1, and context can justify it.