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Provided by Brandt Thomas Roessler
International Disputes and Litigation
Brandt Thomas Roessler is a Senior Associate in Baker Botts’s International Disputes group whose practice focuses on cross-border investigations and international arbitration. He has been involved in a wide variety of complex matters, ranging from the investigation of corruption and money laundering in South America, to an international arbitration arising out of a subsea gas pipeline rupture.
Brandt is an experienced international arbitration practitioner with a strong background in complex, cross-border disputes across the energy, technology, and construction sectors. He has represented clients in proceedings governed by leading arbitral institutional rules — including the ICC, AAA, ICDR, and UNCITRAL — in venues spanning New York, Houston, London, and the Middle East. Clients have included multinational corporations, state-linked entities, and regional businesses, reflecting an ability to navigate diverse legal and cultural contexts in high-stakes matters.
Brandt’s substantive experience spans the full lifecycle of energy and infrastructure projects, including oil and gas exploration, LNG purchase and sale agreements, offshore pipeline construction, and fuel refining facilities. He has also handled technology-related disputes involving licensing and trade secret misappropriation in the telecommunications and energy sectors. Aside from arbitrations, Brandt has assisted clients in cross-border litigation and investigations, including a defense contractor’s alleged violations of the United States Anti-Terrorism Act and a multinational bank’s potential facilitation of laundering government bribe money through South America, the United States, Europe, and the Middle East.
In addition to his international arbitration and investigations practice, Brandt also represents clients pro bono in LGBTQ+ civil rights cases, including challenges to discriminatory state laws and oppositions to harmful proposed regulations. The litigation of these cases has involved appeals to multiple U.S. Courts of Appeals and to the Texas Supreme Court.
As recognition of his advocacy, Brandt was named by the National LGBTQ+ Bar Association as one of the “40 Best LGBTQ+ Lawyers Under 40” in 2024.
New York State Bar
State Bar of Texas
Institute for Transnational Arbitration
National LGBTQ+ Bar Association
Lambda Legal National Leadership Council
J.D., Southern Methodist University Dedman School of Law 2016
cum laude
B.A., Political Science & Economics, Baylor University 2012
cum laude
“Arbitration 2035: Charting the Future”, Panelist, Young ITA – Institute for Transnational Arbitration, November 2025
“Legal Challenges to State Actions Affecting the Rights of LGBTQ+ Persons”, Panelist, U.S. Environmental Protection Agency, June 2022
“Legal Executive Forum: Celebrating Pride Month”, Panelist, Deloitte, June 2021
“U.S. Supreme Court Takes Up Case: Is Section 1782 Discovery Available for Foreign Commercial Arbitrations?”, Author, March 2021
“Henry Schein Case Illuminates Maze Of Arbitrability Questions”, Author, September 2019
Provided by Chambers
Brandt Thomas Roessler has a wide-ranging disputes practice which includes notable strengths in international arbitration matters.
Provided by Chambers
He is an incredible technical lawyer. He gets into the detail and is able to question the experts in a way that I haven't seen. Understanding the technicalities isn't easy, so it was very impressive. His work was amazing.
He was excellent. It was a very complicated matter we worked with them on, but he was very good at breaking down and explaining complex concepts, both to clients and to other external counsel.
He is an incredible technical lawyer. He gets into the detail and is able to question the experts in a way that I haven't seen. Understanding the technicalities isn't easy, so it was very impressive. His work was amazing.
He was excellent. It was a very complicated matter we worked with them on, but he was very good at breaking down and explaining complex concepts, both to clients and to other external counsel.