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Marie-Pierre Maître

Marie-Pierre Maître advises and litigates on industrial environmental law and occupational health and safety issues.

She assists large industrial groups and small and medium-sized companies in their projects and development strategies, particularly in their relations with the administration, their actions to anticipate regulations, and regulatory compliance.

Managing Partner of ATMOS Avocats (formerly known as Selarl Huglo Lepage et Associés until 31 December 2017), she is also a Paris and Brussels Bars member.


She holds a DEA in domestic public law (1992) and a DEA in Community law (1993) and is a Doctor of Law (summa cum laude - congratulations of the jury - Paris II).


Marie-Pierre Maître, who has been with the firm since 2001, is a specialist in environmental law (specialization obtained in 2015). She is also a member of the Conseil Supérieur de la Prévention des Risques Technologiques (CSPRT) since 2015.

Areas of practice

Her practice areas cover all industrial environmental laws, particularly the law on classified facilities and waste. She advises her clients on on-site and soil management and industrial risks: TRPP, waste, etc.

She is also recognized for her expertise in chemical and hazardous materials law (REACH, Rohs, radionuclides, asbestos, nanomaterials, etc.) as well as renewable energy law (biomass, wind power, mechanization, etc.).

She develops litigation strategies before the administrative courts in environmental matters or civil and criminal environmental issues.

She assists her clients in securing their projects (ICPE authorization requests, protected species derogations, land clearing files, etc.), in their legal design, and assists petitioners in their dealings with the administration. She also helps them respecting their obligations regarding public information, public participation (general inquiries), and prior consultation (public debate).

She carries out HSE audits for mergers/acquisitions, drafts clauses (purchase/sale, warranty clause...), lease contracts...

In addition to national law, she also works in European Union law and comparative environmental law. There, she provides legal support to lobby for changes in European and national law.

From a strategic and legal point of view, she assists companies in their regulatory compliance and their ISO 14 001 and OHSAS 18 001 certification processes. She carries out personalized regulatory reference systems and regulatory compliance audits and strategic, legal and regulatory monitoring in the areas of the environment, occupational health and safety, health and safety, and products.

Our clients' sectors of activity include aeronautics/aerospace, surface treatment, waste management, logisticians, transporters, agri-food, telecommunications, and energy companies.


Co-director and co-author of the Code de l'environnement (Ed. Lexis Nexis 2018 ), co-author of the Code de justice administrative (Ed. Lexis Nexis 2017), she directs a chronicle of environmental law case law published in the Gazette du Palais.

She is a member of the editorial board of the journals Energie-Environnement-Infrastructures (Ed. Lexis Nexis), Environnement & Technique (Cogiterra Ed.), Bulletin de Droit de l'Environnement Industriel (BDEI) (Wolters Kluwer).

She is also the author or co-author of several books:
  • "Circular economy: take action", Ed Législatives
  • "L'autorisation environnementale -s approprier la réforme pour sécuriser ses projets " collective work. (Ed. lexis Nexis)
  • "Classified Installations - Legal guide to the application for an operating permit" (SAP)
  • "REACH: Are you doing the right thing?
  • REACH booklet (Ed. Lexis Nexis)
Marie-Pierre Maître wrote numerous articles in her preferred fields:
  • "Industrial sites: what levers towards a zero artificialization?", BDEI n°95 September 2021 (with Alexandre Moustardier) 
  • "The contributions of the ASAP law to environmental and urban planning law", Actes pratiques et ingénierie immobilière, n° 2, April 2021 
  • "Les modifications de la réglementation applicable aux entrepôts", BDEI n° 90, December 2020 (with Stéphanie Lebozec) 
  • "The Prefect's right of exemption: scope and implementation of the decree of 8 April 2020, BDEI n° 88, July 2020 (with Philippe Garro)
  • "By-product: an alternative to all waste?" BDEI June 2018; p.39
  • "Decrypting the environmental permit" Energy-Environment-Infrastructures No. 5 - May 2017, p. 11 (with Ida Empain),
  • "Financing renewable energy and demonstrating financial capacity: an impossible marriage?" of 11 July 2016 (with Elise Merlant)
  • "How do you get a waste product out of waste status?" Energy-Environment-Infrastructure n° 3 - March 2016, p. 54,
  • "Circular economy: is our law up to our ambitions?" Energie-Environnement-Infrastructures n° 10 - October 2015, p. 40 (with Blandine Berger).
  • Marie-Pierre Maître is usually interviewed in the economic press.
  • Ex : " Les coproduits demeurent des objets juridiquement non identifiés " (Les Echos 8 December 2016)

Teaching and Training Interventions

Finally, as a former lecturer at the University of Paris VIII and the Ecole Centrale (Paris), she trains the inspectors of classified facilities in waste law within the framework of IFORE and intervenes in numerous conferences or training courses organized by EFE, DII, Elegia, the Ecole des Ponts, the CNPP in environmental law (Classified facilities, polluted soils, impact studies) and in occupational health and safety law.
Ex: ELEGIA 14 October 2021: ICPE News Day


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