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France

Alerion

Alerion is a law firm in France, with 21 lawyers listed on its own site.

Jurisdiction
France
Founded
Not stated
Professionals
Not stated
Offices
1
Recognitions
10
Lawyers on file
21
www.alerionavocats.com
France
FranceBretwa · CC0 · Wikimedia Commons

Organization

5 practice areas and sectors · 21 lawyers on the firm’s site

How Alerion is organised, read from the titles and practice areas it publishes for each lawyer. A head is named only where the firm states one; otherwise the partner admitted earliest on record stands first and is labelled so.

Corporate Law – Mergers & Acquisitions

5

Lawyers

Christophe Gerschel, Vincent Poirier, Antoine Rousseau, Karine Khau-Castelle

Private equity

4

Lawyers

Vincent Poirier, Antoine Rousseau, Karine Khau-Castelle

Compliance and Regulatory

3

Lawyers

Corinne Thiérache, Frédéric Saffroy

Data Privacy

3

Lawyers

Corinne Thiérache, Frédéric Saffroy

Tax Law

3

Lawyers

Jérémie Mancel-Cottrel, Stanislas Vailhen

Lawyers

21 on the firm’s own site

Names, titles and practice areas as Alerion publishes them, senior titles first. Each name opens the firm’s own page for that person.

  • Alerion Avocats ParisPartnerSibylle Mareau PartnerNamed in 4 recognitions · 60 firm posts
  • Antoine RousseauPartner · admitted 2006Corporate Law – Mergers & Acquisitions · Private equity2 firm posts
  • Catherine RobinPartner · admitted 1993Commercial law · Competition – Merger control · Data Privacy · Intellectual Property4 firm posts
  • Christophe GerschelPartner · admitted 1997Corporate Law – Mergers & Acquisitions · Tax Law · Wealth ManagementNamed in 3 recognitions · 42 firm posts
  • Corinne ThiérachePartner · admitted 1994Compliance and Regulatory · Data Privacy · Digital and Technology Law · Intellectual Property15 firm posts
  • Florence CoussauPartner · admitted 2004Employment Law12 firm posts
  • Frédéric SaffroyPartner · admitted 1995Commercial law · Compliance and Regulatory · Digital and Technology Law · Data PrivacyNamed in 2 recognitions · 20 firm posts
  • Gilles PodeurPartner · admitted 2004Restructuring and InsolvencyNamed in 3 recognitions · 7 firm posts
  • Jacques BouyssouPartner · admitted 1994Dispute Resolution5 firm posts
  • Jacques PerottoPartnerEmployment Law5 firm posts
  • Jérémie Mancel-CottrelPartner · admitted 2025Sibylle Mareau · Tax Law
  • Karine Khau-CastellePartner · admitted 2006Corporate Law – Mergers & Acquisitions · Private equity12 firm posts
  • Muriel Guillin-ModainePartner · admitted 1997Real Estate – Construction
  • Nathalie Dupuy-LoupPartner · admitted 2003Industrial Risk · Insurance · Real Estate – Construction2 firm posts
  • Nicola KömpfPartner · admitted 1993German desk15 firm posts
  • Pierre-Olivier BrouardPartner · admitted 1994Corporate Law – Mergers & Acquisitions · Private equity5 firm posts
  • Sadri DesennePartner · admitted 2013Restructuring and Insolvency
  • Schéhérazade AbboubPartnerPublic data, territorial AI and innovative set-upsNamed in 3 recognitions · 46 firm posts
  • Sibylle MareauPartner · admitted 1997FR · EN · de · Banking3 firm posts
  • Stanislas VailhenPartnerTax Law · Wealth ManagementNamed in 2 recognitions · 24 firm posts
  • Vincent PoirierPartner · admitted 2002Private equity · Corporate Law – Mergers & Acquisitions · Capital markets4 firm posts

Directory placements

6 practice areas · read from the publishers’ tables

Where the directories place Alerion, practice area by practice area, as each table stands on the publisher’s own site. Each cell links to that table. The columns are the same on every page of this site.

Practice areaChambersThe Legal 500
Corporate and M&A—Tier 2
Real Estate and Construction—Tier 3
Banking and Finance—Tier 4
Capital Markets—Tier 4
Technology, Media and Telecoms—Tier 4
Restructuring and Insolvency—Tier 5

Recognition

10 announcements

What other publishers have said, as Alerion reports it on its own site, with the lawyers each announcement names. Each entry links to the page where it was read.

  • The Legal 500Tier 42026

    Banking and finance: transactional work

    “The Legal 500 Asia Pacific 2026: Tier 4, Banking and finance: transactional work, France”

    The Legal 500’s published table

  • The Legal 500Tier 32026

    Construction

    “The Legal 500 Asia Pacific 2026: Tier 3, Construction, France”

    The Legal 500’s published table

  • The Legal 500Tier 42026

    Industry focus: IT and internet

    “The Legal 500 Asia Pacific 2026: Tier 4, Industry focus: IT and internet, France”

    The Legal 500’s published table

  • The Legal 500Tier 52026

    Insolvency

    “The Legal 500 Asia Pacific 2026: Tier 5, Insolvency, France”

    The Legal 500’s published table

  • The Legal 500Tier 22026

    M&A: smaller deals (below €100m)

    “The Legal 500 Asia Pacific 2026: Tier 2, M&A: smaller deals (below €100m), France”

    The Legal 500’s published table

  • The Legal 500Tier 42026

    Private equity: venture/growth capital

    “The Legal 500 Asia Pacific 2026: Tier 4, Private equity: venture/growth capital, France”

    The Legal 500’s published table

From the Firm

What Alerion has published on its own site lately: news, deals, recognitions and publications. Each links to the firm.

Record

Jurisdiction
France
Founded
Not stated
Entity source
The firm's own website
Firm’s site read
11 Nov 2026

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