Signature Litigation
Ariane du Rusquec
Senior Associate
E: [email protected]
T: +33 (0)1 70 75 58 00
Ariane du Rusquec
2026 Legal500 UK: Leading Firm 2025 Legal500 EMEA: Top Tier Firm 2026 Chambers: Firm

Biography

Ariane is a Senior Associate in Signature Litigation’s Paris office, where she specialises in commercial litigation, digital platform law, and complex cross-border disputes, with a particular focus on enforcement proceedings.

With over seven years of experience, Ariane has developed particular expertise in exequatur proceedings and international asset recovery, advising clients on the enforcement of foreign judgments across multiple jurisdictions. Her practice also encompasses disputes involving digital platforms and media technology companies, where she has represented clients in civil and commercial litigation against individuals, corporations, and public authorities.

Ariane is dual-qualified, having been admitted to the bar in both Paris and New York, and is a native French speaker with fluent English.

Prior to joining Signature Litigation, Ariane spent three years as an associate at Chatain & Associés, a Parisian commercial law firm.

Ariane was called to the Paris Bar in 2016 and to the New-York Bar in 2014. She is a native speaker of French and a fluent English speaker.

The quality of their service has always been exceptional. The team excels at developing and coordinating litigation strategies that are not only thorough but also realistic and perfectly aligned with clients' expectations. 
— The Legal 500 EMEA 2026

Experience

Commercial Litigation

  • Representing a major US company operating an online platform for short and long-term homestays in various regulatory and civil liability disputes before French courts against individuals, companies and local authorities.
  • Representing a French video-sharing platform in a commercial dispute following a termination of commercial negotiations with a multinational IT company.
  • Representing a US mobile game developer in pre-trial discovery proceedings before French courts as part of a significant cross-border dispute concerning IP rights over the design and development of a mobile game.
  • Representing a French bank in civil liability disputes brought by individual clients in connection with the bank’s failure to detect fraud perpetrated against them.

Civil Fraud, Asset Tracing & Recovery

  • Representing a CIS bank in a high-profile case against the bank’s former owner in a EUR 1bn judgment enforcement proceedings involving piercing the corporate veil and attachment of numerous high-value assets located on the French Riviera and in the French West Indies.

Publications

Règlementation européenne et IA : Quels contentieux à venir? – Les Podcasts du Droit et du Chiffre Lefebvre Dalloz – 13 October 2025

Enforcement of Foreign Judgments 2026: France – Lexology – 15 August 2025

Enforcement of Foreign Judgments 2025: France – Lexology Panoramic – 24 September 2024

Enforcement of Foreign Judgments 2024: France – Lexology: Getting the Deal Through – 23 August 2023