Andrew Melsheimer

Andrew Melsheimer

  • 214.969.1305
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  • Thompson & Knight LLP
    One Arts Plaza
    1722 Routh Street, Suite 1500
    Dallas, TX 75201 USA
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Andrew Melsheimer concentrates his practice on international and oil and gas-related matters, including cross-border transactions, investment projects, and strategic commercial and business advice. His experience includes acquisitions, divestments, trades, and mergers; exploration, development, and production matters; and anti-corruption (FCPA) and economic trade sanctions. Andrew also assists clients in their dispute resolution matters (litigation and arbitration) and negotiations. His dispute-related matters have been before federal and state courts in Louisiana, Texas, and New York as well as domestic and international arbitration panels.


Commercial Matters

  • Represents publicly traded, private, and national oil and gas companies in their global acquisition, divestment, trade, and merger activities
  • Advises international oil and gas companies with issues related to their host-government contracts, joint operating agreements, unitization agreements, and other ancillary contracts such as service agreement, accounting procedures, confidentiality agreements, secondment agreements, lifting agreements, and FPSO purchase and lease agreements
  • Seconded to an international energy company with responsibilities to handle issues related to host-government contracts, joint operating agreements, and unitization agreements
  • Represented a foreign oil company in the restructuring of a construction contract for component parts of an FPSO platform


  • Currently representing an international energy company in an ICC arbitration involving ownership interests in a unitized area
  • Currently representing an international energy company in an ICC arbitration involving a gas supply agreement
  • Represented an international energy company in an ICDR arbitration involving the interpretation of a pipeline agreement
  • Represented an international energy company in defending pre-arbitration discovery requests in Texas state court under Texas procedural rules and Delaware federal court under 28 USC 1782
  • Represented an international energy company and its affiliates in several federal and state court lawsuits involving enforcement of an arbitral award, claims for breach of contract, attachment, breach of fiduciary duty, and equitable relief
  • Represented an international energy company in an ICDR arbitration involving the interpretation of a contractual right over a Colombian concession
  • Advises domestic and foreign companies on FCPA compliance and investigations and compliance with U.S. trade sanctions
  • Assists domestic and foreign companies with strategic planning for potential litigation and arbitrations of disputes, including contractual dispute and disputes under bilateral and multilateral investment treaties
  • Represented an international energy company and its affiliates in an ICDR arbitration
  • Trial co-counsel in a claim brought by international company against a domestic sales representative
  • Represented a Brazilian steel company in an international arbitration in the collection of outstanding debts arising out of activities in Colombia

Prior Experience

  • Law Clerk, Former Chief Justice Catherine D. Kimball, Louisiana Supreme Court, 2002-2003


  • Texas Rising Stars® by Thomson Reuters (International); 2012

Activities (Memberships/Affiliations)


  • Board Member, North Dallas Chamber of Commerce

  • Member, LSU Alumni Association

  • Member, South Carolina Alumni Association

  • Member, Tiger Athletic Foundation


  • Chair, International Law Section, Texas State Bar

  • Member, Advisory Board of the Institute for International and Comparative Law, Center for American and International Law

  • Advisory Board Member, Institute of Transnational Arbitration

  • Member, Farmout Agreement Revision Drafting Committee, Association of International Petroleum Negotiators

  • Member, American Bar Association

  • Member, Dallas Bar Association

  • Member, Louisiana State Bar Association

  • Member, International Centre for Dispute Resolution, Young & International