--- title: "Hélène Billery" id: "685" type: "collaborateur" slug: "helene-billery" published_at: "2025-12-29T09:27:13+00:00" modified_at: "2026-09-02T12:29:10+00:00" url: "https://www.august-debouzy.com/en/collaborateur/helene-billery/" markdown_url: "https://www.august-debouzy.com/en/collaborateur/helene-billery.md" taxonomy_language: - "English" taxonomy_post_translations: - "pll_6952497182847" taxonomy_tax_expertise: - "Administrative and Public Law Litigation" - "Consumer, Marketing and Advertising" - "Environmental and ESG Litigation" - "Environmental and Urban Planning Law" - "Public Law" - "Public Procurement" - "Real Estate, Construction, and Land Use Litigation" taxonomy_tax_fonction: - "Partner" taxonomy_tax_gouvernance: - "Partners’ Assembly" taxonomy_tax_langue: - "English" - "French" - "Spanish" taxonomy_tax_localisation: - "Paris" --- [Profil Linkedin](https://www.linkedin.com/in/h%C3%A9l%C3%A8ne-billery-2266aa65/) [Voir la page Équipe](https://www.august-debouzy.com/en/team/) # Hélène Billery - Position Partner - Email hbillery@august-debouzy.com - Phone Number +33145618838 - Languages English, French, Spanish - Location Paris - Bar Paris Bar ## Practice Areas - [Administrative and Public Law Litigation](https://www.august-debouzy.com/en/expertise/administrative-and-public-law-litigation/) - [Consumer, Marketing and Advertising](https://www.august-debouzy.com/en/expertise/consumer-marketing-et-advertising/) - [Environmental and ESG Litigation](https://www.august-debouzy.com/en/expertise/environmental-and-esg-litigation/) - [Environmental and Urban Planning Law](https://www.august-debouzy.com/en/expertise/environmental-and-urban-planning-law/) - [Public Law](https://www.august-debouzy.com/en/expertise/public-law/) - [Public Procurement](https://www.august-debouzy.com/en/expertise/public-procurement/) - [Real Estate, Construction, and Land Use Litigation](https://www.august-debouzy.com/en/expertise/real-estate-construction-and-land-use-litigation/) 0 ## Biography Hélène Billery advises public and private entities in all areas of business public law. She has specific expertise in advisory and litigation matters in environmental law, urban planning law, public procurement law, and public health law. Committed to sharing her knowledge, Hélène lectured on administrative law and introduction to law at the universities of Paris I and Paris IV for several years, and now regularly organizes and leads training sessions on public law for our clients. Hélène began her career as a lawyer with the business law firm Sygna Partners. She then developed expertise in litigation and health and biotechnology law at law firms in Montreal and New York. She was admitted to the Paris Bar in 2008 and joined our firm the same year. > Hélène Billery is a brilliant lawyer specializing in public law. Hélène listens very closely to her clients and provides a high-quality service. > > Legal 500 2025 ## Background - 2004 Paris 1 - Université Panthéon Sorbonne | Master's degree (DEA) in Comparative Public Law - 2003 AMU - Université d'Aix-Marseille III | Post-graduate degree (Maîtrise) in Public Law - 2003 UCM - Universidad Complutense de Madrid | Post-graduate degree (Maîtrise) in Public Law ## *Rankings and* **Recognition** m - (01)Best Lawyers 2027 - France Public Regulatory / Environment / Real Estate The Best Lawyers in France - (02)Legal 500 2026 - France Administrative and public law TIER 1 - (03)Décideurs 2025 - France Public Law excellent [More distinctions](https://www.august-debouzy.com/en/distinctions/?search_type-collaborateur%5B%5D=helene-billery) ## *Latest* News k [18/09/26 Deal 2 min August Debouzy Advises Tier 1 Investors (Ecolab, Japan Hydrogen Fund, Marcegaglia, Rio Tinto, and Siemens Financial Services) in GravitHy’s €60 Million Fundraising for the Development of its Low-Carbon Iron Plant in Fos-sur-Mer August Debouzy advised a consortium of Tier 1 international investors on **GravitHy’s €60 million fundraising** to accelerate the development of its low-carbon iron plant in Fos-sur-Mer. The project notably includes a 750 MW electrolyzer to produce green hydrogen for iron production.](https://www.august-debouzy.com/en/deal/august-debouzy-advises-tier-1-investors-ecolab-japan-hydrogen-fund-marcegaglia-rio-tinto-and-siemens-financial-services-in-gravithys-e60-million-fundraising-for-the-development-of-its-low-carb/) [09/07/26 Deal 2 min August Debouzy Advises WDP on Three Strategic Logistics Real Estate Transactions in France August Debouzy advised WDP on three strategic logistics real estate transactions in France, involving sites near Paris-Charles de Gaulle, Toulouse and Montpellier. These operations, totalling approximately 120,000 sq m, strengthen WDP’s French platform and include significant development and sustainability ambitions.](https://www.august-debouzy.com/en/deal/august-debouzy-advises-wdp-on-three-strategic-logistics-real-estate-transactions-in-france/) [25/03/26 Press release 2 min Legal 500 EMEA 2026 Rankings Legal 500 EMEA 2026 distingue une nouvelle fois August Debouzy, avec 8 expertises classées Tier 1 et plus de 20 autres pratiques reconnues. Une performance qui s’accompagne de nombreuses distinctions individuelles et confirme l’excellence des équipes du cabinet.](https://www.august-debouzy.com/en/press-release/legal-500-emea-2026-rankings/) [07/01/25 Press release 5 min August Debouzy Strengthens Its Full-Service Client Offering with Two New Partners: Jennifer Hinge and Hélène Billery August Debouzy continues its strategy of providing full-service support to its clients by drawing on the recognized expertise of Jennifer Hinge and Hélène Billery. These two new partners further enhance the firm’s capabilities, with Jennifer bringing her expertise in financing and Hélène contributing her skills in public law, environmental law, urban planning, and public health.](https://www.august-debouzy.com/en/press-release/august-debouzy-strengthens-its-full-service-client-offering-with-two-new-partners-jennifer-hinge-and-helene-billery/) [23/05/24 Legal Article 5 min Economic and Administrative Simplification Bill: What’s New in Public Procurement? The government has recently unveiled its new simplification action plan for businesses, entitled ‘Let's Simplify!’. It is the result of a public consultati](https://www.august-debouzy.com/en/legal-article/economic-and-administrative-simplification-bill-whats-new-in-public-procurement/) 01 05 Précédent Suivant [Explore Our News](https://www.august-debouzy.com/en/le-hub-list/) k News