Image: Maanas Jain

Maanas Jain

Associate, Litigation Department


Phone: 44-020-3321-1002
Fax: 44-020-3321-1102


Maanas Jain is a senior associate in the London office of Paul Hastings. Mr. Jain’s practice encompasses international commercial arbitration, investment treaty disputes and public international law.

An English-qualified barrister, Mr. Jain has advised, represented, and conducted advocacy for corporations and States in complex, high-value commercial and investment treaty arbitrations across a broad range of sectors (including energy, finance, life sciences, technology, and infrastructure).

With almost a decade in practice, Mr. Jain has extensive experience handling disputes involving States or State entities, and a particular focus on cases with an Indian connection.

Mr. Jain also advises and represents parties in arbitration-related court matters. Most notably, he appeared as counsel in the UK Supreme Court on behalf of the ICC in Halliburton v Chubb, which is the leading English authority on apparent bias in circumstances of multiple arbitral appointments in related cases.

Mr. Jain is a current co-chair of Young ICCA (one of the world’s leading international arbitration networks for young practitioners and students) and Vice-Chair of Advocacy for the Racial Equality for Arbitration Lawyers (REAL) organisation. He regularly speaks on arbitration, and his recent publications have appeared in the European International Arbitration Review and Practical Law.

Mr. Jain has been consistently recognised as a “Rising Star” for International Arbitration in The Legal 500 UK guide (2023, 2024), with clients describing him as a “star of the future”. He was also identified as one of London’s “brightest” arbitration stars of the next generation in Legal Business’ Disputes Yearbook.


  • Legal 500 UK Guide 2023, 2024 (Rising Star, International Arbitration)
  • Next Generation of Arbitration, Legal Disputes Yearbook 2022


  • City Law School, Distinction
  • Oxford University, B.A.


  • Acting for an oil major in a SIAC arbitration (seated in Brisbane) relating to a dispute under an agreement for the sale of interests in certain upstream assets (which resulted in an extremely favourable settlement for the client following a contested merits hearing). Western Australian law applied.
  • Securing an award in excess of US$150 million for a multinational commodity trading company in an UNCITRAL arbitration against the Government of Ghana arising from a power purchase agreement. Ghanaian law applied.
  • Advising a global financial institution in an LCIA arbitration arising from a Middle East joint venture dispute. English and New York law applied.
  • Representing a global construction group in a multimillion-dollar ICC arbitration concerning the delayed construction of a multi-purpose complex in Eastern Europe. Belarus law applied.
  • Successfully representing a leading Korean distributor against its upstream supplier in a multimillion-dollar ICC arbitration. Korean law applied.
  • Successfully representing several infrastructure funds in an ICSID arbitration against Spain arising from measures adversely affecting renewable investments (ICSID Case No. ARB/15/42).
  • Securing a favourable settlement for an oil major in an UNCITRAL treaty arbitration against a Southeast Asian State concerning adverse tax measures.

Matters may have been completed before joining Paul Hastings.

Engagement & Publications

  • Moderator, Arbitration of Energy and Climate Change Disputes, Young ICCA-YCAP Event, Vancouver, June 2023
  • Moderator, Young ICCA Debate, Paris Arbitration Week 2023 (“This House believes the impact of AI on arbitration is a distant pipedream, not an imminent reality”), March 2023
  • Speaker, GAR Live Dubai Debate (“This house believes that arbitration should apply a binding doctrine of precedent”), November 2022
  • Lexis Nexis Webinar, “Apparent Bias and Disclosure – Arbitration after Halliburton v Chubb”, March 2021
  • Panel Member, “Rising Stars: Perspectives from a New Generation of Practitioners”, Harvard International Arbitration Conference 2020
  • “Freezing Orders in Support of Arbitral Proceedings Seated in England: U&M Mining Zambia Ltd v Konkola Copper Mines Plc”, European International Arbitration Review, Volume 3, Issue 2 (2015)


  • Young ICCA Co-Chair
  • Vice-Chair (Advocacy), Racial Equality for Lawyers
  • Peer Review Board Member, ICSID Review

Practice Areas

International Arbitration





Barrister regulated by the Bar Standards Board


University of Oxford - Worcester College, B.A.

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