合伙人

David H. Weiss

国际仲裁, 拉丁美洲及加勒比地区, 全球能源

"David is an extraordinary professional. He has a very broad knowledge of international law, but is also very detailed and incisive in the factual aspects and the singularities of each case, which gives him a depth and overview that is not easy to match."

Legal 500 Latin America

概览

Clients seek David Weiss' advice on sophisticated investor-State arbitration, commercial disputes in Latin America, and arbitrations in the energy, mining, and oil & gas industries. He has significant experience regarding post-M&A disputes.

David has participated, and taken a lead role, in several of the largest and most complex international arbitrations in recent years and successfully obtained multiple awards whose value exceeded US$1 billion. He leads or has critical roles in both commercial and investor-State arbitrations in the mining and energy industries. Clients value David’s experience working internationally in both public and private law and on disputes under both common law and civil law. He works closely with in-house counsel at sector companies and has particular knowledge with matters in Brazil.

Clients rely on David’s ability to assess, advocate, and resolve their most difficult legal issues. He has routinely worked on some of the most complicated issues in high profile and complex disputes, and with his participation and leadership, his clients have regularly prevailed on most of these issues. David advocates against some of the most well-regarded arbitration counsel and before some of the most prestigious arbitral tribunals in the world. He has been named a ’Future Leader’ in Arbitration by Who’s Who Legal in six of the past seven years. As a ‘Recommended’ partner in Legal 500 Latin America, clients noted, “David is an extraordinary professional. He has a very broad knowledge of international law but is also very detailed and incisive in the factual aspects and the singularities of each case, which gives him a depth and overview that is not easy to match.”

In addition to his native English, David is fluent in Spanish and Portuguese.

执业经验

Represented:

A major US energy company in an UNCITRAL arbitration in which we successfully obtained an award worth over US$ 9 billion against Ecuador for denial of justice, violation of an investment agreement, and breach of the U.S.-Ecuador bilateral investment treaty.
A major international corporation in a multi-billion-dollar ICC arbitration regarding the sale of pulp producing company in Brazil. In 2021, we obtained a successful award on liability.
A major construction company in an ICSID Arbitration against Argentina for failing to restore the economic equilibrium of a toll-road concession.
A subsidiary of two major European energy companies in an ICSID arbitration in which we successfully obtained an award of over US$ 2 billion against Egypt for improper interference in a natural gas sale purchase agreement. Also represented this company in several parallel commercial arbitrations.
A US mining company in an UNCITRAL arbitration against Peru for expropriation a large, smelting complex.
A Brazilian pharmaceutical company against a major international pharmaceutical company in an ICC arbitration that concerned a post-M&A dispute worth over US$ 100 million.
A Fortune 100 company in conducting a worldwide review of projects and investments to maximize investment-treaty protection.
A Brazilian company against a major U.S. private equity fund in an ICC arbitration that concerned post-M&A dispute worth over US$ 500 million regarding a technology company in Brazil.
A major US energy company in an UNCITRAL arbitration against an Asian country regarding decommissioning obligations worth over US$ 1 billion in potential liability.
A major US energy company in an UNCITRAL arbitration in which successfully obtained an award worth US$ 700 million less taxes against Ecuador for violation of the US-Ecuador bilateral investment treaty as a result of Ecuador’s courts’ undue delay of seven breach-of-contract cases.
A major construction company in an ICSID arbitration against Argentina in which we obtained a favorable award for the unlawful termination of a water-and-sewage concession contract.
Two separate A US energy companies during the annulment phases of their ICSID cases against Argentina for abrogating dollar tariffs and inflationary adjustments in the gas sector.
A Fortune 50 company in its ICSID case against Argentina for measures taken against gas production companies.
A major US energy company in an ICC arbitration against a joint-venture partner in a West African, off-shore project.
A US energy company in an ICC arbitration against a state-owned, electricity-distribution company in the Dominican Republic.
An individual in a potential denial-of-justice claim under an investment treaty against a European country. The matter settled on terms favorable to our client.
A US company in which we obtained a favorable award in an ICC Arbitration in a commercial dispute with its Brazilian partner concerning a real-estate development project in São Paulo, Brazil.
A major US energy company regarding the implications of particular treaties during the course of that company’s negotiations to extend an oil-and-gas concession with a sovereign government.

出版物及演讲

教育背景

The University of Texas School of Law, JD, with honors
University of Richmond, 文学学士
Phi Beta Kappa

执业资格

德州

语言

英语
葡萄牙语
西班牙语

专业及社区参与

Texas Bar, International Law Section, Secretary of the Counsel
Texas Bar Foundation, Member of the Nominating Committee
Texas International Law Journal, Member of the Alumni Board
International Arbitration Viz Moot Court Team, University of Texas School of Law, Coach

David H. Weiss

概览

执业经验

相关服务及行业

服务

行业

出版物及演讲

出版物

Mexico's Judicial Reforms and the Implications for Foreign Investors

Mexico’s Controversial Judicial Reform Takes Effect: Assessing its Impact

新闻

Mayer Brown Adds King & Spalding Arbitration Pro In Houston

Mayer Brown expands International Arbitration practice with addition of David Weiss

活动

Houston Energy Conference

12th ITA-IEL-ICC Joint Conference on International Energy Arbitration - Houston

教育背景

执业资格

语言

专业及社区参与