Anisha Sud

• Won an award for declaratory relief worth over US $4 billion in an ICC arbitration on behalf of two international oil majors against a Southeast Asian government, arising out of a revenue-allocation dispute under a gas service contract.
• Won an award for declaratory relief worth approximately US$ 9.5 billion and US$ 215 million in damages on behalf of Chevron Corporation against Ecuador in an UNCITRAL international arbitration under the U.S.-Ecuador Bilateral Investment Treaty. This case concerns the fraudulent Lago Agrio environmental judgment issued by the Ecuadorian courts, resulting in precedent-setting awards in favor of Chevron, including a finding of denial of justice and treaty breaches by Ecuador’s courts, as well as numerous interim measures awards ordering Ecuador to prevent enforcement of the court judgment.
• Won a US$ 100 million award on behalf of a seller consortium of seven of the world’s largest energy companies against an Asian buyer in an LNG price review arbitration (Singapore-seat; UNCITRAL Rules; New York governing law) (2020).
• Won an award for over US$ 2 billion in damages on behalf of a major Spanish energy company against Egypt under a bilateral investment treaty concerning the failure to supply natural gas in a long-term supply agreement.
• A selection of Anisha’s LNG price review negotiation and arbitration experience in the past five years includes:
• Advised a consortium of three of the world’s largest energy companies in LNG price review negotiations under an LNG SPA with a large Asian buyer, with a price differential of hundreds of millions. The review settled successfully on the eve of the expiration of the negotiation period (2022).
• Represented a consortium of three of the world’s largest energy companies in a consolidated LNG price review arbitration under two LNG SPAs with one of the world’s largest Asian buyers, with a price differential of approximately US$ 2 billion. The dispute settled successfully for our clients during the arbitration (Singapore-seat; LCIA Rules; English governing law) (2023).
• Represented one of the world’s largest energy companies in a LNG price review arbitration with one of the world’s largest Asian buyers, with a price differential of hundreds of millions. The dispute settled successfully for our clients during the arbitration (Singapore-seat; LCIA Rules; English governing law) (2023).
• Won a favorable award on behalf of a seller consortium of three of the world’s largest energy companies in an LNG price review arbitration with a large Asian buyer with a price differential of hundreds of millions (Singapore-seat; LCIA Rules; English law) (2025).
• Ongoing advice to one of Australia’s largest sellers of LNG in price review negotiations and position stress-testing with two foundational Asian buyers under two LNG SPAs, with price differentials of hundreds of millions (2020 – 2025).
• A selection of Anisha’s energy disputes experience includes:
• Won a $360 million award for Burlington Resources in an ICSID arbitration against Ecuador, arising out of the expropriation of an oil concession and associated counterclaims for alleged environmental contamination.
• Successfully represented major international oil company in UNCITRAL arbitration involving claims in excess of $1.5 billion against the Government of India. We obtained a full dismissal of counterclaims against our client.
• Won a favorable award for declaratory relief in an ICC expert arbitration on behalf of Phillips 66 against PDVSA and one of its subsidiaries, arising out of the price protection mechanism in a long-term crude oil supply agreement for a Texas refinery.
• Representing Shell in a multi-billion dollar ICSID arbitration against the Republic of the Philippines under the Netherlands-Philippines bilateral investment treaty concerning Shell's investment in the Malampaya gas-to-power project. We recently obtained provisional measures in favor of Shell.
• Representing major LNG seller consortiums in LNG price review negotiations and arbitrations against large Asian buyers, with price differentials ranging from hundreds of millions to billions of U.S. dollars.
• Representing Chevron Thailand Exploration & Production Co. in an ad hoc arbitration against Thailand, concerning decommissioning of offshore assets in the Gulf of Thailand.
• Representing a major Philippine conglomerate in an SIAC arbitration against its Indonesian joint venture partner, arising out of a dispute over shares in a Dutch venture that owns and operates the major toll roads in and around Manila.
• Representing an Indonesian pipeline operator in an HKIAC arbitration against a gas producer and a gas shipper, arising under an agreement for the transport of natural gas from an offshore Indonesian field.
• Advising major energy company on contractual decommissioning obligations in Asia.
• Advised major U.S. energy company in international environmental litigation in China and Indonesia.
• A selection of Anisha's pharmaceutical disputes experience includes:
• Advised major Japanese pharmaceutical company in potential arbitration against American biotechnology company relating to the companies’ collaboration for the development of products for the treatment of Alzheimer’s disease.
• Advised major US pharmaceutical company in potential ICC arbitration against Indian supplier relating to certain regulatory actions and the supplier’s ability to meet manufacturing standards.

Anisha Sud represents clients in high-stakes international commercial and investor-State arbitrations in the energy sector, including disputes involving long-term foreign investments, multi-party joint ventures, and government entities. Several of her arbitrations exceed USD 1 billion in dispute and are considered landmark cases. Based in Singapore for nearly a decade, she brings deep experience with APAC-nexus disputes across multiple industries.

Anisha handles international disputes across a variety of industries, including energy, infrastructure, tech, and pharma. In the energy sector, she has particular experience with disputes arising from LNG SPAs, MSAs, production sharing contracts, concession agreements, gas sale and transportation agreements, and BITs. Her areas of focus include LNG price reviews, force majeure, decommissioning, hydrocarbon contamination, subsurface reservoir characteristics, oil & gas infrastructure, and take-or-pay obligations. In Asia, she has handled more than a dozen high-stakes LNG price review negotiations and arbitrations in recent years, along with disputes arising from force majeure, failure to take/failure to deliver, and related claims.

She is fluent with the major arbitration rules, with repeated experience in arbitrations convened under the ICC, ICSID, LCIA, SIAC, and UNCITRAL Arbitration Rules. She works closely with technical experts on her matters and is well-versed in the technical and financial aspects of long-term investment projects and purchase and supply arrangements, in addition to their legal and contractual frameworks.

Anisha is ranked in Chambers Asia-Pacific (2023, 2024, 2025, 2026), which reports that she "is nothing short of brilliant" and "a great strategic thinker;" that her "skills in handling complex issues and providing advice in a timely manner inspires confidence;" that she "can process issues on the spot and come out with lucid, clear advice;" and that "she provides fit for purpose advice that cuts straight to the legal and commercial issues, and she is tremendously responsive to client needs."