Alerion Avocats

What Alerion Avocats does

Alerion Avocats is an independent French business law firm founded in 2003 and headquartered at 137 rue de l'Université in Paris's 7th arrondissement. The firm is structured around 21 partners and 70+ lawyers offering full-service business law coverage across 22 legal expertise areas (Corporate/M&A, Private Equity, Employment, Tax, IP/IT, Competition, Banking, Insurance, Real Estate, Construction, International Arbitration, and others) and 13 tailored business solutions targeting French mid-market and large enterprises, their executives, shareholders, and private equity/investment fund clients. International capability is delivered through three specialized desks — a Spanish & Latam Desk led by a partner admitted to both the Paris and Madrid Bars, a German Desk staffed by Franco-German lawyers, and English-language capability — supporting cross-border advisory and litigation mandates.

The firm's revenue model is professional services billing (hourly rates, fixed-fee arrangements, or hybrid) across three principal streams: legal advisory across M&A, PE, employment, tax, and other practice areas; litigation and arbitration representation before state courts and arbitral tribunals; and regulatory/compliance advisory including foreign investment screening and EU regulatory matters. Notable client engagements include advising Ipsos on its acquisition of BVA Group, advising Tikehau Capital on the EPISOD LBO exit, advising Airbus Defence and Space on successive mergers (Airbus Military France, Signalis), advising Faurecia on a €165 million industrial platform investment in Bourgogne-Franche-Comté, and advising McDonald's France on its Ligue 1 sponsorship agreement. The firm's core technology stack is legal services practice management systems and proprietary knowledge platforms, with a distinctive intellectual asset in the Observatoire des Contentieux Climatiques — a climate litigation monitoring service authored by the firm's lawyers.

Alerion goes to market through partner-led business development, industry reputation, and consecutive-year rankings across Chambers France (Band 3 for Corporate/M&A Mid-Market and Corporate/Commercial Litigation in 2026, Band 3 in 2025, Band 3 in Chambers Europe 2023), Legal 500 EMEA (ranked in 6 practice areas in 2022, 9 in 2025, and 10 in 2026 across Construction, Insurance, PE, M&A, IT, IP, Insolvency, and Environment), Best Lawyers in France (21 lawyers in the 2027 edition), and Décideurs Magazine. Distribution is reinforced by thought-leadership publishing in Les Echos, L'Express, Option Finance, and Agefi Hebdo, quarterly international newsletters, multilingual website (French, English, Spanish, German), active International Bar Association participation — including Jacques Bouyssou's appointment as President of the IBA Litigation Committee for 2026 — and formal partnerships with the EDHEC Augmented Law Institute and specialist firms (BCF, Inno3) for emerging-technology practice development.

Name

Alerion Avocats

Legal name

Alerion Avocats

Website

https://alerionavocats.com

Company type

Private

Founded year

2003

Operating status

Operating

Headcount range

101–250 employees

Short description

Alerion Avocats is an independent Paris-based business law firm with 70+ lawyers and 21 partners offering full-service legal advisory and litigation across 22 practice areas, serving French and international corporations, executives, shareholders, and private equity clients.

Ownership category

akta.pro rank

Product category

Business Law Services

NAICS

Legal Services (5411), Offices of Lawyers (541110)

SIC

Services-Legal Services (8111)

akta.pro primary industry

Governance & Board Effectiveness Advisory (BPAHAFAC)

akta.pro secondary industry

Corporate Strategy Advisory (BPAHADAA)

Keywords

• Business law services
• Corporate legal advisory
• Mergers and acquisitions
• International arbitration
• Employment law counsel

Headquarters

HQ city

Paris

HQ country

France

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Operations, Marketing or Sales, Technology or R&D, Infrastructure

Revenue model

1. Legal Advisory Services: Billable hours and fixed-fee arrangements for comprehensive legal counsel across corporate, M&A, private equity, employment, tax, and other practice areas for businesses, executives, and shareholders
2. Litigation and Arbitration: Representation and advocacy in commercial disputes, international arbitration proceedings, and criminal business law matters before state courts and arbitral tribunals
3. Regulatory and Compliance Advisory: Compliance consulting, regulatory affairs counsel, and foreign investment screening assistance for companies operating in regulated industries

Go-to-market motion1 record

Distribution channels3 records

Marketing channels5 records

Core offering

Alerion Avocats is an independent French business law firm offering comprehensive legal advisory and litigation services across 22 specialized practice areas and 13 tailored business solutions. The firm serves French and international corporations, executives, shareholders, and private equity clients in transactions, disputes, regulatory matters, and ongoing counsel. It maintains dedicated international desks (Spanish & Latam, German) and publishes a proprietary Climate Litigation Observatory providing specialized legal monitoring.

Product overview

Alerion Avocats is an independent French business law firm founded in 2003, offering a full-service legal practice with 22 specialized legal practice areas (Expertises) and 13 tailored business solutions (Solutions). The firm operates international desks including Spanish & Latam Desk and German Desk for cross-border advisory and litigation. The flagship offering includes the Observatoire des Contentieux Climatiques (Climate Litigation Observatory), a specialized legal monitoring subscription on climate litigation. The portfolio covers corporate/M&A, private equity, employment law, competition law, tax, IP/IT, banking, insurance, real estate, and international arbitration.

Differentiator

Problem solved

Functional benefit

Brands

• Observatoire des Contentieux Climatiques: A legal observatory providing climate litigation legal monitoring, written by the firm's lawyers, entirely dedicated to the emergence of climate disputes.
• Spanish & Latam Desk
• German Desk

Products and services

• Full-Service Business Law Practice Comprehensive legal advisory and litigation services spanning 22 practice areas and 13 business solutions, serving French and international corporations, executives, and shareholders across the full lifecycle of their business legal needs.

Quantifiable outcome

• 21 lawyers recognized in Best Lawyers in France 2027
• +4 more outcomes

Named customers11 records

Segments4 records

Ideal customer profiles5 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature1 record

Partnerships

Four partnerships are on record, tiered core and minor.

• International Bar Association (IBA)coreStrategic or Co-development PartnerActive membership and participation in IBA annual conferences. Partner Jacques Bouyssou elected President of the IBA Litigation Committee for 2026, leading a community of 3,000+ litigation lawyers globally.
• EDHEC Augmented Law InstituteminorStrategic or Co-development PartnerPartnership with EDHEC Business School for Augmented Lawyer Academy Masterclass Series. Partner Jacques Perotto animates episodes on employment law and sustainable development topics.
• BCF (Bouisson Client Fidal)minorStrategic or Co-development PartnerCollaboration with patent attorney Marion Faure from BCF at France Quantum 2026 for Master Class on Quantum Technologies and export control, including Open Source considerations.
• La Ley Mediación y ArbitrajeminorStrategic or Co-development PartnerFirm contributes regular French arbitration case law chronicles to this Spanish legal journal, providing expertise on international arbitration developments.

Scale indicators3 records

Recent moves6 records

Expansion highlights6 records

Broad incumbents

• Fidal: Large French business law firm (EY-affiliated since 2022) with a nationwide office network. Competes broadly with Alerion across mid-market and enterprise legal services, with greater geographic breadth but a more distributed, less partner-led model.
• Gide Loyrette Nouel: Major international French-headquartered business law firm with broad geographic reach. Competes with Alerion's French corporate, M&A, dispute resolution, and international arbitration practices, particularly for cross-border mandates involving France.
• Bredin Prat: Top-tier Paris-headquartered French business law firm ranked Band 1 in French M&A and Litigation. Competes with Alerion for premium French and cross-border mandates, but at the high end of the market where Alerion is not directly positioned.
• Bird & Bird: International law firm with a significant Paris office focused on technology, IP, and regulated industries. Overlaps with Alerion in IT/IP and IP litigation (a Corine Thié-rache strength) and competes for cross-border mandates involving French IP and tech law.
• Squire Patton Boggs: Global law firm that previously employed Alerion partner Frédéric Saffroy (head of its Paris Commercial & IP practice). Overlaps with Alerion in aerospace/defense, IP, and commercial law work for international clients active in France.
• Darrois Villey Maillot Brochier: Elite Paris M&A and litigation boutique consistently ranked Band 1 in French M&A. Represents the top of the market where Alerion's mid-market positioning is closest, and competes for the same high-value French corporate and PE advisory mandates.

Direct peers

• August Debouzy: Independent Paris-based business law firm with a similar full-service offering across M&A, PE, employment, IP/IT, and litigation. Overlaps with Alerion in mid-market enterprise clientele and ranked practices (Legal 500, Chambers).
• De Gaulle Fleurance & Associés: Independent French business law firm operating across Paris, Brussels, and other European hubs. Competes with Alerion in M&A, PE, employment, and public law for French and international clients, with comparable full-service positioning.
• Lacourte Raquin Tatar: Paris-headquartered French independent business law firm specializing in M&A, private equity, and corporate finance. Direct competitor for French mid-market M&A and PE mandates and competes for similar legal directory recognition (Legal 500, Chambers).
• BCTG Avocats: Independent French business law firm headquartered in Paris with a comparable mid-market profile (approximately 100 lawyers), competing directly with Alerion in M&A, PE, employment, and commercial litigation across French corporates and SMEs.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat4 records

Key risks6 records

Key highlights6 records

Customer concentration

• LinkedInlinkedin.com/company/alerionavocats

Revenue estimate

Valuation estimate

Number of profiles

Profiles22 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Alerion Avocats