Partner

Mr. Mascarenhas specializes in international arbitration (commercial, construction, and investment arbitration), public international law, and business and human rights.

He has nearly two decades of experience acting as counsel in domestic and international arbitration proceedings under the major institutional arbitral rules as well as ad hoc arbitral rules in a broad range of industries, including chemicals, energy (LNG, oil, nuclear, electricity, power, renewables), mining and metals, hospitality, life sciences, and luxury goods.  He also has experience in private equity and M&A disputes arising under share purchase, joint venture, shareholder, and partnership agreements.

Mr. Mascarenhas’ investment arbitration and commercial arbitration experience includes advising or representing energy and mining companies in investment treaty and commercial claims against Argentina, Azerbaijan, Bosnia-Herzegovina, Bolivia, Ecuador, India, Italy, Mexico, Nigeria, Peru, the Philippines, the Russian Federation, Timor-Leste, Uruguay, and Venezuela. He has represented Turkey in five investment arbitration matters and has advised governments about measures to take to avoid or settle potential investment arbitration disputes.  Additionally, he has represented owners and contractors in construction arbitration disputes, especially concerning energy infrastructure projects.  And he has substantial experience in US litigation relating to arbitration, including discovery, set-aside/annulment applications, and enforcement of awards, including for and against foreign sovereigns.

Mr. Mascarenhas’ public international law experience includes advising governments on a range of international law issues, such as maritime and territorial boundary disputes, international environmental law, and treaty negotiations and infrastructure.  His experience in business and human rights includes conducting human rights due diligence for companies; advising clients on their reporting and compliance obligations under various human rights laws; and conducting ESG/BHR due diligence as part of M&A and private equity transactions.

Mr. Mascarenhas received his J.D. from Columbia University and his LL.M. from University of London.