Piper Alderman


Piper Alderman is a premier commercial law firm with offices in Adelaide, Brisbane, Melbourne, Perth and Sydney. We work with clients across Australia and internationally to achieve optimum legal and commercial solutions.

Our legal expertise has been built on nearly two centuries of industry experience. Piper Alderman has been a leading advisor to Australian commercial interests for more than 170 years and we continue to advance in knowledge, skills and commitment. We listen to our clients, respond to their needs and guide them through increasingly complex regulatory and business landscapes.

As a united, national partnership we are able to work in teams and collaborate in a manner that enables us to harness our skills and network effectively for our clients. We understand the importance of building enduring client relationships and are absolutely committed to advancing our clients’ interests and helping them achieve their business goals.

Piper Alderman has a proud history of being at the forefront of many emerging areas of law, from landmark rulings to new legislation.  Our lawyers understand and contribute to Australia’s legal framework in ways that give our clients a special edge.


Gordon Grieve

Chairman of Partners

+61 2 9253 9908

Gordon is Chairman of Partners, and heads up the firms International Group. He has a reputation in the market as an innovative, pragmatic and commercially astute litigator and commercial lawyer.

Gordon has high-level experience in both the private and public sectors across all facets of major corporate transactions and commercial litigation. He advises on corporate governance and compliance issues, company takeovers and schemes of arrangement within Australia. Gordon has appeared in and instructed in large-scale commercial litigation in New South Wales, Queensland, Western Australia, Victoria and South Australia. He has acted successfully in a number of defences of high-profile white collar crime prosecutions.

He has instructed in international litigation matters for clients in the UK, Europe and the USA. He has given expert evidence in proceedings in Switzerland, the UK, South Africa and a number of US states on Australian law.

Gordon has recovered funds for clients in many offshore jurisdictions arising from fraud actions in Australia.

Gordon is named as a Recommended lawyer in the 2024 edition of The Legal 500 Asia Pacific for Dispute Resolution: litigation.

McKenzie has expertise in complex commercial litigation and has acted in numerous multi million dollar disputes including under Australian Corporations and Securities legislation. McKenzie also works in resolving and advising on regulatory matters for private financial services and technology clients and represents international and Australian subsidiaries in relation to defending regulatory enforcement actions.

Recently McKenzie acted for Maxi EFX Global in $50m Federal Court proceedings brought by ASIC in relation to alleged breaches of the Corporations Act and the Australian Securities and Investments Commission Act in the conduct of Forex and CFD trading. McKenzie also acts on behalf of parties in arbitration proceedings and on international and domestic complex cross border disputes.

Having previously worked in China and Southeast Asia, McKenzie draws upon her international commercial experience to assist in the provision of commercial and corporate advice to both the firm’s national and international clients.

McKenzie is named as a key lawyer in the 2024 edition of The Legal 500 Asia Pacific for Dispute Resolution: litigation.