Australia Pacific Airports (Melbourne) Pty Ltd v Nuance Group (Australia) Pty Ltd

The case before the court involved Australia Pacific Airports (Melbourne) Pty Ltd and Nuance Group (Australia) Pty Ltd, with the dispute centering on the interpretation of a lease agreement with intricate provisions concerning rent. The complex lease included a Review Board empowered to assess requests to modify the financial terms, including a request to alter the rent calculation formula and introduce a one-off payment from the lessor to the lessee. The dispute escalated to the Court of Appeal, which was tasked with determining whether the Review Board possessed the authority to make decisions on such requests and whether the absence of a joint resolution between the chief executive officers of both parties constituted a "difference" that would warrant referral to an expert for determination.

The court examined the language of the lease agreement, particularly focusing on the clause that provided for "joint resolution" by the chief executive officers in the event of a disagreement. The parties had conceded the meaning of this clause at trial, but the Court of Appeal had to decide whether it was appropriate to reconsider the interpretation in light of the concession. The court also needed to determine whether the Practice Statement C.A. 1 of 1995 applied, which could allow the court to depart from a concession made at trial if the concession was incorrect.

The court concluded that the Review Board did indeed have the power to decide on requests to amend the financial terms of the lease. It also determined that the failure to achieve a joint resolution did not constitute a "difference" within the meaning of the clause that referred to an expert for determination. The court found that it was not free to reconsider the meaning of the clause despite the concession made at trial, and therefore, the Practice Statement did not apply in this instance. The Court of Appeal ultimately upheld the lower court's interpretation of the lease agreement.