Mango Boulevard P/L v Spencer

Mango Boulevard P/L was the plaintiff in a case against several defendants, including the first and second defendants, regarding a dispute over a shareholders' agreement. The case was heard in the Supreme Court of Queensland, with the Court of Appeal also involved in the decision-making process. The primary dispute centred on whether a previous adjudication, which resulted in a guillotine order, gave rise to a res judicata, and whether the first and second defendants could be estopped from arguing against the plaintiff's claims. The court was required to determine whether the previous adjudication was a final judgment that conclusively decided the issues at hand and if the defendants were precluded from advancing their case due to the previous order.

The court found that the guillotine order made by the Judge was not a final judgment and did not give rise to a res judicata. The court emphasised that the previous order did not require a determination on the merits, and the Judge's decision to grant judgment on the counterclaim was based on the argument that allowing the defendants to proceed with their case would constitute an abuse of process. The court of appeal upheld the abuse of process argument and expressed support for the res judicata argument in obiter dicta. However, the court held that the res judicata argument was not an essential step in the reasoning of the Judge or the Court of Appeal. Furthermore, the court found that the defendants were not estopped from advancing their case as the documents subject to the guillotine order were no longer relevant due to concessions made by the first and second defendants.

The court concluded that it would not be prejudicial to the fair trial of the proceeding if the defendants were allowed to advance their case. The court also found that the "Non-Defaulting Party" could not itself be in default under the deed, as each party had purported to issue a notice of default to the other. The court ordered that it be declared that as at 22 February 2006, each of the first and second defendants was unable to pay their debts. The plaintiff's application for summary judgment was dismissed, and the application by the first, second and fourth defendants for summary judgment was also dismissed. The order of 3 April 2007 was varied by deleting specific sub-paragraphs.