Cockatoo Dockyard v Commonwealth of Australia [No 2]

Cockatoo Dockyard, a ship repairer, initiated proceedings against the Commonwealth of Australia concerning a dispute stemming from a contract for the repair of a naval vessel. The case was heard in the Federal Court of Australia. The crux of the dispute was whether the Commonwealth was estopped from arguing that certain cost items should not be included in the overhead costs as determined in an interim arbitral award. The case raised several legal issues, primarily revolving around the principles of issue estoppel and res judicata. The court had to determine if the Commonwealth could be estopped from raising a defence in later proceedings that could have been expected to be raised during the arbitral proceedings. Additionally, the court needed to clarify the relationship between res judicata and issue estoppel, particularly in the context of Anshun estoppel and whether the Commonwealth could be estopped from employing a defence by way of confession and avoidance in later proceedings.

The Federal Court of Australia found that the Commonwealth was estopped from arguing that certain cost items should not be included in the overhead costs as concluded in the interim arbitral award. The court reasoned that the principles of issue estoppel and res judicata applied to prevent the Commonwealth from raising a defence in the later proceedings that could have been, but was not, raised during the arbitral process. The court held that the Commonwealth was estopped from employing a defence by way of confession and avoidance in the later proceedings if that defence could have been, but was not, raised during the arbitral process. The court concluded that the Commonwealth was estopped from arguing that certain cost items should not be included in the overhead costs as concluded in the interim arbitral award.

The Federal Court of Australia's decision emphasised the importance of the principles of issue estoppel and res judicata in preventing parties from raising defences in later proceedings that could have been, but were not, raised during the arbitral process. The court's ruling highlighted the need for parties to raise all relevant defences during the arbitral proceedings to avoid being estopped from raising them in later proceedings. The court's decision provided clarity on the relationship between res judicata and issue estoppel, particularly in the context of Anshun estoppel, and confirmed that the Commonwealth was estopped from employing a defence by way of confession and avoidance in the later proceedings if that defence could have been, but was not, raised during the arbitral process.