Biography
Ariane is an Associate in Signature Litigation’s London office assisting the international arbitration team.
Ariane has over five years of experience as a lawyer, having worked at leading Brazilian law firms specialising in dispute resolution, public law, and administrative law. Her experience includes advising domestic and international clients on regulatory and administrative law matters, international and domestic arbitration, particularly involving public administration, and crisis management arising out of environmental issues and major contractual breaches.
She qualified as a lawyer in Brazil in 2019 and was admitted to the Brazilian Bar Association (OAB) that year. Ariane obtained her Bachelor of Laws (LLB) from Mackenzie Presbyterian University in São Paulo in 2019, followed by a postgraduate specialisation in Administrative Law from Getulio Vargas Foundation (2020-2021). Ariane completed her Master of Laws (LL.M) in Public International Law at Queen Mary University of London in September 2025.
Experience
- Representing a group of investors in a large-scale mining project in Eastern Europe in a USD 220m UNCITRAL investment treaty arbitration claim against the host State involving allegations of expropriation and breaches of the FET standard.
- Representing a Malaysian investor in connection with two large-scale mining projects in Poland in a USD 500m ICC investment treaty arbitration involving allegations of expropriation, breaches of the FET and FPS standards, and a breach of the obligation to encourage and create favourable conditions for foreign investors pursuant to the Malaysia-Poland Bilateral Investment Treaty.
- Representing a global conglomerate engaged in the procurement and export of agricultural commodities with operations across Africa, in relation to a USD 400m investment treaty arbitration against an East African State and involving allegations of expropriation of the investor’s goods and other malfeasances.
Press Coverage
Ioannis Alexopoulos, Duncan Grieve, Pietro Grassi and Ariane Fuller, ‘How major corruption scandals often extend beyond criminal convictions’ (Thomson Reuters Regulatory Intelligence, 26 November 2025).
Ariane Fuller, ‘LIDW 2025: Main Conference—Facing the Uncertainty and Embracing Innovation with Shared Legal Foundation’ (Kluwer Arbitration Blog, 5 June 2025).
Marcos Orofino and Ariane Fuller, ‘LIDW 2025: A Two-Way Road Between Litigation and Arbitration’ (Kluwer Arbitration Blog, 11 June 2025).
Silvia Lamprinopoulou and Ariane Fuller, ‘LIDW 2025: The Strategic Turn From Conflict to Consensus’ (Kluwer Arbitration Blog, 11 June 2025).
Ariane Fuller, ‘LIDW 2025: Navigating Trends and Anticipating Disputes in the ISDS’ (Kluwer Arbitration Blog, 15 June 2025).
LAUER, Bruno. FULLER, Ariane. ‘How Supreme Court rules reciprocal tax immunity for joint-stock companies’. Article published in Estadão (Brazilian newspaper), 2022.
FULLER, Ariane. ‘Life between bars, the coexistence of children and incarcerated parents: the effectiveness of the right of children and adolescents to coexist with their incarcerated parents in Brazil considering the principle of full protection’, in ANDREUCCI, Ana Cláudia Pompeu Torezan; JUNQUEIRA, Michelle Asato. STATUTE OF CHILDREN AND ADOLESCENTS AFTER 30 YEARS; NARRATIVES, FRAMEWORK AND PROJECTIONS. VOL. III. Editora Thoth, 2021.
FULLER, ARIANE. ‘School lunch and the challenges of realising the right to adequate food for children and adolescents’. Dissertation (Degree in law). Universidade Presbiteriana Mackenzie, São Paulo, 2019.