David Reingewirtz

David Reingewirtz is an antitrust and commercial litigator with a bit less than 20 years of professional experience.

David began his legal career as an antitrust lawyer working with several major international law firms (Slaughter and May, WilmerHale, and Latham & Watkins) in Washington DC, Brussels and Paris.

In this capacity, he has advised and represented clients for 8 years in all the antitrust legal fields, including cartels, merger control, abuses of dominance, distribution, and regulatory, mostly on the defense side. His practice covered a wide range of economic sectors.

In 2008, after being appointed Secrétaire de la conférence of the Paris bar, a prestigious position earned by litigators, David decided to join an independent litigation boutique as a partner and expand his fields of practice. In addition to representing clients in antitrust cases, David specialized in cross border and domestic litigation, corporate and commercial litigation, as well as in white collar crime. As part of his practice, David assists shareholders and directors in shareholders disputes, post-acquisition conflicts, unfair competition cases and contracts termination. He also advises them in corporate matters (e.g., sale of assets and shares), and drafting commercial agreements (e.g., franchise, distribution agreements, shareholders agreements).

David has gained significant litigation experience before the civil, commercial and criminal courts which he leverages in particular to obtain redress for companies harmed by antitrust infringements.

Since 2008, David has represented individuals pro bono in complex criminal matters, and regularly provided legal advice pro bono to non-governmental associations and individuals. David also lectures at Sciences Po, a leading school of law in Paris, and publishes regularly in both the antitrust and business legal fields.

Academic experience

  • Sciences Po Paris (guest lecturer)
  • University of Paris XIII (former lecturer in competition law)

Distinction and associations

  • Ancien secrétaire de la conférence du stage (Paris, 2008)
  • Member of the International association of lawyers and the IJL


  • Auditeur for the Institut National des Hautes Études de la Sécurité et de la Justice (INHESJ), 2016
  • LL.M. (Columbia University/New York, 2002)
  • Paris Bar school, lauréat, 2000
  • LL.M. in business and contract law (DJCE University Paris Assas/France, 2000)
  • LL.B. in business law (University Paris Assas/France, 1999)
  • Institut d’Etudes de Politiques de Paris (Sciences Po Paris), 1999

Sarah Subrémon

Sarah Subrémon has close to 20 years of experience in European and French competition law in Paris, Brussels and London. She is a former senior official with the French Competition Authority, the Competition Market Authority, the European Commission and a senior executive of a company specialized in recovering damages in cartel cases.

At bureau Brandeis Paris, Sarah focuses her practice on both private and public antitrust enforcement. Throughout her career, Sarah has dealt with all types of antitrust cases and procedures.

In terms of administrative procedures, Sarah has been involved in settlement, commitment, interim relief, and sanctions proceedings brought before the European Commission and the French Competition Authority. She has also coordinated procedures before these authorities with numerous other competition authorities in the EU and the UK.

As far as court procedures are concerned, Sarah has litigated several landmark antitrust cases before the French and EU courts at all levels of review.

Regarding her private antitrust enforcement practice, Sarah assists French, EU and foreign companies in obtaining damages for the antitrust injuries they suffered. Her expertise in this field includes assessing potential damage claims resulting from cartel, abuse of dominance and State aid cases, determining the best course of action, and litigating them before the jurisdictions most favorable to victims. As one of the 25 registered “avocat-fiduciaire” (Trustee-Lawyer) in France, she can also be entrusted in managing damages claims as a trustee on behalf of companies, public entities and groups of consumers.

Sarah has been named to the list of “40 in their 40s: Notable Women Competition Professionals in Europe, the Americas, and Africa” a few years ago. She is a regular guest speaker at conferences organized by competition authorities, in particular in her capacity as a Non-Governmental Advisor for the European Commission in the International Competition Network (ICN).

Academic experience

  • Catholic University of Lille (Paris campus, 2019, Lecturer on antitrust private enforcement)
  • SKEMA Business School, Paris, (Lecturer in EU Competition law from 2010 until 2013)

Government service

  • International Competition Network (Non-Governmental Advisor for the European Commission)
  • EU Commission (Advisor to the Hearing Officers in DG COMP)
  • French Competition Authority (Deputy General Rapporteur, Deputy Head of the Legal Service, case-handler, Advisor and member of Cabinet of President LASSERRE, in charge of European and institutional affairs)
  • Competition and Markets Authority (Deputy Legal Director – Secondment)


  • LL.M. in competition law (visiting student, King’s College)
  • LL.M. in European business law (Paris II – Panthéon-Assas)
  • Professional School for Attorneys, Paris (Ecole de Formation du Barreau de Paris)