Milfoil Pty Ltd v Commonwealth Bank of Australia Ltd

Milfoil Pty Ltd sought to appeal a decision of the Federal Court which found that it was precluded from asserting beneficial ownership over certain stock. The central issue was whether the findings in a past Federal Court decision, concerning the scope of Milfoil's entitlements under an oral agreement with Mercury Brands Group (MBG), were legally indispensable to that decision. Milfoil argued that the previous findings did not conclusively determine the totality of its entitlements under the agreement. The court considered whether the prior decision legally determined that Milfoil's entitlements were confined to the stock identified in a Reconciliation Working Paper (RWP). The court held that the previous decision did not legally determine that Milfoil's entitlements were confined to the stock identified in the RWP, and that Milfoil was entitled to assert ownership over other goods released by the Chinese suppliers. The court found that the previous decision was legally indispensable only insofar as it determined that Milfoil had acquired title to the goods identified in the RWP, but not that these goods comprised the entirety of Milfoil's entitlements under the agreement.

The court also considered what material it could take into account in determining the issues in the previous proceedings. The court noted that there were no pleadings in the previous proceedings, and it considered the reasons for the decision, evidence, written submissions, and transcript of oral argument. The court held that it was appropriate to consider this material in determining whether Milfoil was estopped from asserting ownership over the stock in question. The court found that Milfoil was estopped from asserting beneficial ownership over the stock, as it had acted to its detriment in reliance on MBG's representation that the RWP identified the stock which belonged to Milfoil. The court granted Milfoil's application for leave to appeal and allowed the appeal, dismissing the notice of contention. The court found that the previous decision did not legally determine that Milfoil's entitlements were confined to the stock identified in the RWP, and that Milfoil was entitled to assert ownership over other goods released by the Chinese suppliers.