Atkinson v Atlas Investments Limited

Atkinson v Atlas Investments Limited involved a dispute between the plaintiff, Atkinson, and the defendant, Atlas Investments Limited. Atkinson sought to assert an alternative case in a new proceeding, which had not been pleaded in an earlier action. The legal issues centred on whether the alternative case was fundamental to the decision in the earlier action, and whether it was unreasonable for Atkinson not to have pleaded this alternative case. Additionally, the court examined whether the Moçambique rule made it reasonable for Atkinson to not plead the alternative case, given that the earlier action was in Vanuatu and the present case involved land in New South Wales. The court also considered if the "trust" exception to the Moçambique rule applied, and the effect of the abolition of the Moçambique rule in New South Wales on any question of comity.

The court found that the Anshun estoppel applied, barring Atkinson from asserting the alternative case. The reasoning focused on the principle that it was unreasonable for Atkinson not to have pleaded the alternative case in the earlier action. The Moçambique rule, which typically applies when an earlier action is in a foreign jurisdiction, was considered, but the court found it did not excuse Atkinson from pleading the alternative case. Furthermore, the "trust" exception was deemed inapplicable. The abolition of the Moçambique rule in New South Wales did not alter the outcome, as the court held that the principle of Anshun estoppel was not dependent on the Moçambique rule.

The court concluded that Atkinson was estopped from asserting the alternative case due to the Anshun estoppel. This decision reinforces the importance of pleading all relevant cases in the appropriate forum to prevent estoppel from barring subsequent claims. The final orders of the court reflected this, upholding the estoppel and dismissing Atkinson's attempt to assert the alternative case.