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Ensign Legal Perth_Mining Energy Resourc

Our People

Our people are your solution

Our team of professional, talented and dedicated commercial lawyers have extensive experience in Commercial Litigation and Dispute Resolution and are leaders in understanding and applying complex areas of law.

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Tim Masson


Our Director, Tim Masson has more than 18 years’ experience in commercial litigation and dispute resolution in Perth and Western Australia. Proudly, he’s even been recognised as one of the ‘Leading Commercial Litigation & Dispute Resolution Lawyers, Western Australia, 2019 and Leading Administrative & Public Lawyers, Western Australia, 2023.’

Tim has significant experience in energy and resources matters, including joint venture and off-take/supply disputes, contract interpretation disputes – including sale and purchase agreements, financial securities, state agreement matters, royalty issues, mining tenement applications and forfeiture cases, as well as judicial reviews of regulatory decisions concerning mining approvals and infrastructure.

  • Bachelor of Laws from Murdoch University

  • Admitted as Barrister and Solicitor of the Supreme Court of Western Australia in 2000

  • Admitted as Barrister and Solicitor of the High Court of Australia in 2001

0403 179 880

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Nicholas Tiverios

Special Counsel

As a Special Counsel at Ensign Legal, Nicholas specialises in advice work, commercial dispute resolution and public law. He has had the carriage of high profile litigation in superior courts and the High Court of Australia.

Nicholas previously worked as the High Court of Australia’s Legal Research Officer (working out of the Chambers of the Hon Chief Justice Robert French AC) and practised as a solicitor in Melbourne. He is also a widely published private law legal academic who has worked at University College London, the University of New South Wales and the University of Western Australia.  Nicholas publishes and teaches in the areas of contract law, commercial equity, remedies, unjust enrichment, and commercial law. He is also the general editor of the Journal of Contract Law.


Nicholas focuses on using his extensive research background to solve legal problems and disputes in a time efficient manner.

  • Doctor of Philosophy (Law) from University College London.

  • Master of Laws (Distinction and Ranked First) from University College London.

  • Bachelor of Laws (First Class Honours) from the University of Western Australia.

0474 141 319

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Matthew Holler


As a lawyer at Ensign Legal, Matthew specialises in commercial dispute resolution, with a focus on mining and resources.

Matthew has experience in the Mining Warden’s Court involving mining tenement applications, exemption applications and forfeiture applications. Matthew also has experience in corporate and commercial disputes in the District Court, Supreme Court of Western Australia and High Court of Australia.

Clear and concise advice on all aspects of corporate and commercial disputes with experience you can trust.


  • Bachelor of Laws from Murdoch University

  • Admitted to the Supreme Court of Western Australia in 2018

0448 279 763

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Chrissy Tsolakis  


As an Ensign Legal Associate, Chrissy specialises in providing commercial dispute resolution advice in the mining and resource sector. In addition, Chrissy provides advice in relation to disputes arising from mining tenements and forfeiture cases.

Prior to joining Ensign Legal, Chrissy practiced in the commercial and litigation team having acted on a variety of matters for corporations and individuals in both the Western Australian and Federal jurisdictions.

Chrissy focuses on providing strategic and pragmatic advice to clients to resolve disputes, efficiently and effectively.


  • Bachelor of Laws from University of Notre Dame

  • Bachelor of Commerce from the University of Notre Dame

  • Admitted to the Supreme Court of Western Australia in 2016

0416 010 935

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