Federal Court Rules 2011

A person may apply to the Court for leave to intervene in a proceeding with such rights, privileges and liabilities (including liabilities for costs) as may be determined by the Court.

The Court may have regard to:

whether the intervener’s contribution will be useful and different from the contribution of the parties to the proceeding; and

whether the intervention might unreasonably interfere with the ability of the parties to conduct the proceeding as the parties wish; and

any other matter that the Court considers relevant.

When giving leave, the Court may specify the form of assistance to be given by the intervener and the manner of participation of the intervener, including:

the matters that the intervener may raise; and

whether the intervener’s submissions are to be oral, in writing, or both.

The Court may give leave subject to conditions—see rule 1.33.

The Court may appoint an amicus curiae.