Caason Investments Pty Ltd v Cao

In Caason Investments Pty Ltd v Cao, the applicants sought to amend their pleadings in a class action concerning misleading and deceptive conduct. The applicants, represented by Caason Investments, sought to add new claims involving market-based causation to their existing claims of misleading and deceptive conduct, as well as to redefine the class of group members to include those who had not relied on the misleading statements. The respondents opposed the amendments, arguing that the proposed market-based causation claims were not recognised in Australian law and that allowing such claims would expand the class of potential claimants to include those whose claims would be statute-barred.

The court considered several legal issues, including whether market-based causation claims were permissible under Australian law, whether reliance was necessary to establish a claim, and whether the proposed amendments would unfairly prejudice the respondents. The court found that while the applicants' proposed amendments went beyond simple consolidation, they were otherwise appropriate, except for the inclusion of market-based causation claims. The court held that such claims were not a recognised form of causation in Australian law and would unduly expand the class of potential claimants.

The court directed the parties to consult and agree on a form of orders to give effect to these reasons, including any agreement on the timetable for the amendments and the handling of costs. The court also noted the importance of considering the limitation periods for the claims and ensuring that the amendments did not introduce time-barred claims. The parties were to provide a draft of the orders to the court by a specified date.