National Mutual Holdings Pty Ltd v Sentry Corporation

National Mutual Holdings Pty Ltd sought an injunction against Sentry Corporation, restraining the latter from proceeding with litigation in a foreign jurisdiction, which it was alleged had a tendency to interfere with the conduct of proceedings before the Australian court. The court was asked to determine whether it had the jurisdiction to enjoin Sentry Corporation from proceeding with the foreign litigation and, if so, the principles applicable to grant such interlocutory relief. The court considered the principles applicable to grant interlocutory relief of this character and distinguished this jurisdiction from that to stay proceedings commenced in the Australian court. It held that the court did have the jurisdiction to grant an interlocutory injunction against Sentry Corporation to restrain it from proceeding with the foreign litigation, provided certain conditions were met. The court found that the relief sought was appropriate in the circumstances, given the potential interference with the Australian proceedings and the balance of convenience favouring the granting of the injunction.

The court held that an Australian court may grant an interlocutory injunction against a party to restrain them from proceeding with litigation in a foreign jurisdiction if it is satisfied that the foreign proceedings have a tendency to interfere with the conduct of proceedings before the Australian court, and the balance of convenience favours the granting of the injunction. The court noted that this jurisdiction is distinct from that to stay proceedings commenced in the Australian court, as the former involves preventing a party from proceeding with litigation in another jurisdiction, while the latter involves halting proceedings already commenced in the Australian court. The court also emphasised that the principles applicable to grant interlocutory relief of this character are similar to those applicable to grant an interlocutory injunction in any other context, and that the court must consider factors such as the likelihood of success on the merits, the balance of convenience, and the potential for irreparable harm. Ultimately, the court found that the relief sought was appropriate in the circumstances, given the potential interference with the Australian proceedings and the balance of convenience favouring the granting of the injunction.