Pierce T.McMahon


Perth + 61.8.6214.5732

Pierce McMahon has a broad practice that focuses on resolving large and complex commercial disputes in the energy and resources sector, contentious corporate matters, and disputes in the building and construction industry.

Pierce has acted for clients in superior courts throughout Australia, both at first instance and on appeal. Pierce also regularly acts for clients in international and domestic arbitrations, including under the International Chamber of Commerce (ICC), Singapore International Arbitration Centre (SIAC), and United Nations Commission on International Trade Law (UNCITRAL) Rules, and in adjudications under state security of payment legislation.

Pierce's representations prior to joining Jones Day in 2021 include: proceedings in the Supreme Court of New South Wales (NSW) concerning rights of first refusal arrangements in the Australian rail sector; proceedings in the Supreme Court of Western Australia (WA) and the WA Court of Appeal involving a long-term mining services agreement; adjudication proceedings under the Construction Contracts Act of Western Australia (CCA) regarding construction claims of various infrastructure projects in WA; proceedings in the WA Court of Appeal concerning claims of misleading or deceptive conduct and abatement upon death; acting for a contractor in international arbitration seated in Singapore involving claims arising out of the design and construction of one of the world's largest liquefied natural gas (LNG) facilities; proceedings in the Supreme Court of WA concerning a long-term gas supply agreement and force majeure issues; and proceedings in the Supreme Court of NSW concerning breach of contract and misleading or deceptive conduct claim in the software sector.

  • October 20, 2022
    Presenting at the 2022 Energy Resources Law Annual Conference on "The Convergence of Mining and Energy - What does the future Powering of Mining look like?" alongside Adam Conway