Katie Hyman is widely experienced in international dispute resolution, including multijurisdictional, shore, and investor-state matters. In addition, she is a data protection, privacy, and cybersecurity specialist. She is dual-qualified as an English solicitor and New York attorney and is admitted as a special legal consultant in the District of Columbia. 

Katie represents a variety of clients, including in the energy and telecoms industries, in high-value, complex international commercial arbitration proceedings under the major arbitral rules worldwide, and in investor-state arbitrations. Katie is a Fellow of the Chartered Institute of Arbitrators and is a CEDR-accredited commercial mediator. She accepts arbitrator and mediator appointments in addition to her practice as counsel and serves as a mediator for the DC Superior Court. 

She advises clients in relation to commercial disputes in the English High Court and, in conjunction with local counsel, inshore jurisdictions, including the Caribbean and India. 

Katie is a Certified Information Privacy Professional (CIPP/E and CIPP/US) and a Certified Information Privacy Manager (CIPM). She assists multinational clients, with a particular focus on the needs of start-ups, with the design and development of privacy-sensitive policies for the collection and use of personal data, with an increasing emphasis on the privacy aspects of machine learning, artificial intelligence, and ethical data use. She works with her clients to design, develop and implement compliance programs to meet the requirements of the GDPR, CCPA, and other privacy legislation and frameworks and to prepare for the evolution of cybersecurity and privacy laws.

Representative Experience

Any result the lawyer or law firm may have achieved on behalf of clients in other matters does not necessarily indicate similar results can be obtained for other clients.


  • Representation of a major Russian energy company in relation to a dispute with a Central European state concerning discrimination and expropriation of a US $2.65 billion inward investment in the energy sector, including advice as to proposed bilateral investment treaty (BIT) arbitration proceedings.
  • Representation of one of the largest Russian energy companies in a US $380 million complex fraud claim in the English court against four Ukrainian high-net-worth individuals, including successfully obtaining a worldwide freezing injunction.

Oil & Gas

  • Representation of Russian oil major in relation to a London Court of International Arbitration (LCIA) arbitration in London worth in excess of €30 million concerning EU anti-dumping duties imposed on imports of biodiesel by a leading Eastern European trader of biodiesel and renewable energy; the case involves complex issues of EU and oil law.
  • Representation of Petrobras in a US $500 million English litigation concerning cost claims and recovery of loans relating to the construction of a production platform, P36.
  • Representation of an international offshore drilling contractor based in Singapore in litigation worth substantially in excess of US $60 million concerning the drilling of an exploratory well offshore in Guinea and involving highly complex technical issues concerning drilling operations.
  • Representation of an AIM-listed Russian oil and gas independent in “bet the company” LCIA proceedings in London against a high-profile Russian businessman, former director, and shareholder of the company.
  • Acted in a UNCITRAL arbitration against a Central American state on behalf of a U.S. private investment firm in relation to a technically complex oil exploration license dispute.
  • Represented a Scandinavian energy company in a high-stakes dispute in the Middle East.


  • Acting for a major Russian telecoms company in successfully defending an English Commercial Court injunction (and related ad hoc arbitration), which would have prevented its $20 billion acquisition of Wind Telecom from proceeding in early 2011; the successful defense allowed for the completion of a transformative acquisition for the client, making it the sixth biggest mobile telecoms company in the world.
  • Representation of a Russian telecoms company in ad hoc arbitration proceedings against a Middle East software company.
  • Representation of a Russian fiber-optical broadband provider in relation to a US $5 million ad hoc arbitration in London concerning the functionality of certain network services provided by an Israeli Internet search company; the case involved highly complex IT issues.
  • Acting for a major European telecom company in an ICC arbitration in relation to services in the Middle East.

Data Privacy

  • Advising various clients on implementing and operationalizing the GDPR, CCPA, and evolving state and federal privacy regulations.
  • Advising a U.S./U.K. fintech company on the development, communication, and operationalization of its privacy program and governance structure, including creation of privacy principles, policies, notice, cross-border data strategy, data lifecycle management, individual rights management, Privacy by Design, third-party risk management, and training.
  • Advising a multinational professional services company on the creation of a privacy program, including privacy principles, policies, notice, and data lifecycle management.
  • Designing privacy programs, privacy policies, and privacy notices for corporates, including various e-commerce sites.


  • Acted for Bridgestone’s U.S. entities in an International Centre for Settlement of Investment Disputes (ICSID) claim against Panama, obtaining a landmark ruling which found for the first time that trademark licenses may comprise an “investment.”
  • Represented a Middle Eastern state in an ICJ claim relating to the use of airspace.
  • Represented a Middle Eastern state in a state-to-state dispute relating to the cessation of certain services between various states.
  • Advised the Republic of Korea on its negotiations with the US for the new US-Korea Free Trade Agreement.
  • Representation of a leading business group with diverse investments, headquartered in Russia, in multimillion commercial litigation in the British Virgin Islands.
  • Representation of an Israeli chemical company in a US $100 million LCIA arbitration in London concerning a gas sale and purchase agreement with a U.S. energy company; the dispute was successfully resolved.
  • Representation of one of the largest Russian banks in a US $75 million LCIA arbitration against a Central Asian bank in respect of guarantee obligations.

Thought Leadership


  • YAWP – Embracing Diversity and Young Talents to Build the New Generation of Arbitration Practitioners,” Young Arbitration Review, 27 (2017)

Speaking Engagements

  • Panelist, GDPR and Tech: Key Considerations of Privacy by Design and AI in Tech, Onetrust, May 25, 2023
  • Panelist, GDPR and Retail: Building Customer Loyalty and Trust with Consent and Privacy, Onetrust, May 23, 2023
  • Panelist, Ninth Annual Damages in International Arbitration Conference, JURIS Conferences, Online, 2021
  • Panelist, Women in Dispute Resolution: Navigating the New Normal, Adapting Career Strategies, and Building Resilience After Covid-19, DLA Piper, Young Arbitral Women, Online, 2020
  • Moderator, The Art of Advocacy: Tips, Tricks, and War Stories, ICDR, Arbitral Women and Equal Representation in Arbitration, New York, 2019
  • Panelist, Diversity in International Arbitration: Perspectives on Today’s Changing Landscape and Careers in International Arbitration, CPR ADR, New York, 2018
  • Panelist, Skills that Make a Difference: What it Takes to be Effective Counsel in International Arbitration, New York, 2016