Rumbidzai Maweni

Washington, DC

I represent sovereign States and State-owned entities in high stakes international legal disputes.

Rumbidzai Maweni focuses her practice on representing sovereign States and State-owned entities in investor-State arbitrations and public international law disputes, including disputes involving natural resources, environmental remediation, construction, cybersecurity, land and maritime boundaries and human rights. She also represents U.S. and foreign litigants before U.S. courts.

In addition, Rumbidzai is a member of the firm’s Global Business & Human Rights practice and advises multinational companies on ways to integrate internationally recognized environmental, social and human rights principles into their management practices and supply chains.


  • Universiteit van Amsterdam, LL.M., 2014
  • Columbia University School of Law, J.D., 2014
  • Oxford University, M.Phil., 2010
  • University of Durham, B.A., 2008

Bar and Court Admissions


  • District of Columbia
  • New York


  • Shona
  • French



  • Land and Maritime Delimitation and Sovereignty over Islands (Gabon/Equatorial Guinea). Representing Equatorial Guinea in a dispute with Gabon regarding the Parties’ land and maritime boundaries and sovereignty over islands


  • Chevron Corp. & Texaco Petroleum Corp. v. Republic of Ecuador. Representing Ecuador in an UNCITRAL Rules arbitration under the Ecuador-United States bilateral investment treaty regarding a $9.5 billion judgment issued by an Ecuadorian court against Chevron for environmental damages in the Ecuadorian Amazon
  • Sacyr S.A. v. The Republic of Panama. Representing Panama in an UNCITRAL Rules arbitration under the Spain-Panama bilateral investment treaty regarding the expansion of the Panama canal
  • Hydro and others v. Albania. Represented Albania in an ICSID annulment proceeding concerning various industries
  • Niko Resources v. Bangladesh, BAPEX and Petrobangla. Represented Bangladesh, and its state entities, in a dispute before ICSID concerning the causes, impacts, and damages related to two gas blowouts
  • Representing a State in a PCA arbitration (confidential)
  • Representing a State in a PCA arbitration (confidential)


  • Solo Investment LLC v. Republic of Poland. Represented the Republic of Poland in a lawsuit in the Northern District of Illinois concerning an alleged expropriation


  • Co-author (with T. Pasipanodya), “Code Red: Environmental Considerations for African States in Investment Treaties”, TDM 3 (2022)
  • Author, “Global Warming and the ‘Africanisation’ of International Investment Law?”, ICC Guest Blog (2 June 2022)
  • Co-author (with T. Pasipanodya, I. Padeanu, & K. M’ziani), “USA: Investor State Arbitration 2021” in The International Comparative Legal Guide to Investor-State Arbitration 2021, Global Legal Group (ed.), 3rd Edition (2020)
  • Co-author (with K. Cordes, L. Johnson, and S. Szoke-Burke), “Legal Frameworks and Foreign Investment: A Primer on Governments’ Obligations”, Columbia Center on Sustainable Investment (November 2019)
  • Author, “Arbitrating Human Rights Disputes: The Proposal for Business and Human Rights Arbitration Rules and Lessons Learned from the Bangladesh Accord Arbitrations”, CCSI Blog (2 July 2019)

Honors & Involvement

  • American Society of International Law, Member
  • Oxford University Press, Investment Claims: Contributor

Speaking Engagements

  • Panelist, “TRIPS Compliant Compulsory Licenses for the Promotion of Public Health as a Breach of the FET Standard in ISDS Disputes,” Joint ASIL-CCIL North American Conference on International Economic Law, Montreal, QC (September 2018). 
  • Panelist, “Expropriation, Land Rights, and Sustainable Agricultural Investment,” 20th Annual World Bank Land and Poverty Conference, Washington D.C. (March 2019).