Introduction

Hortense focuses on complex civil, commercial and corporate litigation, combining deep French procedural knowledge with extensive international dispute management across diverse sectors.

Hortense de Roux assists clients with post-M&A disputes, shareholder conflicts, business torts product liability, anti-corruption and white-collar crime in various sectors such as retail, chemical, IT, energy, and finance. Hortense advises French and international clients for prelitigation case management and represents them before French courts. She has extensive experience of the various fields of French procedural law both in civil and commercial matters and of monitoring international complex litigations.

Hortense has been recognized for many years by international Directories such as Best Lawyers, Legal 500 and Chambers, which have individually ranked her and as well as her team. The excellence of her career has also been acknowledged by the HEC community, which awarded her the HEC Legal Award (Prix du Juriste HEC) in 2018.

Hortense is described by Legal 500 as "tenacious", with "strong command of the matters she handles", "highly experienced in international litigation", and capable of "handling any situation".

Nominated by the Acritas Stars Survey four times in a row, Hortense has been described as demonstrating "great rigor and consistent hard work" and as having "good command of the matters she handles, attentive to her client's needs, and availability".

Hortense is strongly committed to promoting diversity. She represented HEC Alumni within Grandes Ecoles au Féminin from 2014 to 2024 - a non-profit organization dedicated to advancing women in the professional sphere - and served as its President for six years. She held three terms on the HEC Alumni Board, and was elected its President on June 17, 2024. She also serves on the Board of Directors of HEC Paris and the HEC Foundation.

  • The French subsidiary of a leading U.S. IT services company in various high-profile commercial and expertise proceedings initiated by former customers as well as during important searches carried out at its headquarters pursuant to the request of a competing company, and during the subsequent proceedings.
  • A leading US multinational consumer products in a follow-on litigation relating to a participation in a cartel within the hygiene and household products mass market.
  • A leading Spanish global energy company in a contractual dispute against one of the French energy leader companies due to alleged manufacturing defects affecting equipment supplied and installed in a nuclear power plant.
  • Assistance of a global leading company operating in the nuclear sector in the context of litigation against suppliers of components for nuclear power plants, following the discovery of document fraud and technical non-compliances that could affect nuclear safety.
  • Assistance of a global asset management group as part of a post M&A litigation instituted by an investor against a major fund and several other individuals.
  • Assistance of a leading financial intelligence firm as defendant in commercial proceedings instituted to seek compensation for alleged damages of more than Euro 4 billion.
  • Advising a European Energy champion as part of multiple litigation against corporate clients relating to the performance of energy supply agreements due to the volatility of the prices on the market
  • Advising a leading global investment management firm, specializing in value-oriented strategies across equities, fixed income, and alternative assets in connection with a dispute concerning the interpretation and enforcement of specific warranties granted by the seller under a Share Purchase Agreement relating to the acquisition of the entire issued share capital of a French corporation, with a valuation exceeding €200 million.
  • Assisting a major international real estate investor in ongoing litigation before the Paris Civil Court against the seller of a life sciences real estate complex.
  • Assisting an international wealth management group as part of the remediation measures, information to the French regulator, employment issues, insurance claims and subsequent criminal proceedings entailed by the misuse of corporate assets by the CEO of its French subsidiary.