1787 Article III, The U.S. Constitution provided the outline of the judicial branch of government.
1789 The Judiciary Act of 1789 established a federal court system.
1801 The Judiciary Act of 1801 reorganized the federal judiciary and established the first circuit judgeships.
1802 The Judiciary Act of 1802 reorganized the federal courts following repeal of the 1801 act.
1807 Establishment of the Seventh Circuit and a seventh seat on the Supreme Court.
1837 Establishment of the Eighth and Ninth Circuits and additional seats on the Supreme Court.
1855 Establishment of a California Circuit.
1863 Establishment of a Tenth Circuit and a tenth seat on the Supreme Court.
1866 Reorganization of the judicial circuits and reduction in the size of the Supreme Court.
1869 Establishment of circuit judgeships and setting the number of the Supreme Court seats at nine.
1875 Authorization for the federal courts to exercise the full jurisdiction allowed under the Constitution.
1891 Establishment of the U.S. Circuit Courts of Appeals.
1911 Abolition of the U.S. Circuit Courts as part of the recodification of laws relating to the federal judiciary.
1922 Establishment of the Conference of Senior Circuit Judges (later the Judicial Conference of the United States).
1925 The Judges' Bill expanded the jurisdiction of the Courts of Appeals and allowed the Supreme Court to determine many of the cases it would hear.
1929 Division of the Eighth Judicial Circuit and establishment of a Tenth Circuit.
1939 Establishment of the Administrative Office of the U.S. Courts.
1967 Establishment of the Federal Judicial Center.
1968 The Federal Magistrates Act.
1978 Establishment of U.S. Bankruptcy Courts.
1980 Division of the Fifth Judicial Circuit and establishment of an Eleventh Circuit.
1982 Establishment of the Federal Circuit.