The NSW Administrative Decisions Tribunal is not a 'court of a State' within s 77(iii) of the Constitution and cannot be invested with federal jurisdiction under s 86(2) of the Trade Practices Act 1974 (Cth) or s 39(2) of the Judiciary Act 1903 (Cth). An essential feature of a 'court' under Chapter III is that it be an institution composed predominantly of judges. State tribunals that are not predominantly composed of judges cannot exercise federal jurisdiction, regardless of how many other indicia of a court they possess. The constitutional expression 'court of a State' imposes a more stringent requirement than the word 'court' in State legislation. Individual divisions of a tribunal cannot be treated as separate institutions for the purpose of this analysis.
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