Bryan Cave Leighton Paisner
- Founded
- 1873-01-01 in St. Louis, Missouri, USA
- Headquarters
- One Metropolitan Square, St. Louis, Missouri, USA
- Phone
- +44 20-7760-1000
Bryan Cave Leighton Paisner LLP (BCLP) is an international law firm created by the 2018 merger of St. Louis–based Bryan Cave (origins in 1873) and London’s Berwin Leighton Paisner. The firm operates from 32 offices across the Americas, Europe, the Middle East, and (until 2025) Asia, with global headquarters in St. Louis, Missouri. BCLP employs more than 1,275 lawyers and a total staff estimated at over 2,500, serving Fortune 500 multinationals, emerging enterprises, and FTSE 100 companies. The firm’s practice spans corporate, finance, litigation, real estate, tax, and regulatory matters, with particular depth in energy, financial services, food & agribusiness, and sports. In 2024 BCLP adopted a unified brand identity, absorbed Seattle-based Harrigan Leyh Farmer & Thomsen, and moved to a single CEO structure under Steven Baumer. The firm opened offices in Saudi Arabia in 2025 and closed its Hong Kong and Singapore locations, focusing resources on core growth engines. Financially, BCLP achieved record revenue of $912 million in fiscal year 2025, reflecting successful post-merger integration and strategic investments in litigation, mid-market transactions, and real estate.
Detailed Review
History & Formation
BCLP’s lineage reaches back to 1873, when the St. Louis firm King, Phillips, and Stewart (later Bryan Cave) was founded. Over the next century Bryan Cave expanded through mergers with Robinson Silverman (New York, 2002), Powell Goldstein (Atlanta, 2008), and Holme Roberts & Owen (Denver, 2012). Across the Atlantic, Berwin Leighton Paisner was created in 2001 by merging Paisner & Co (1935) and Berwin Leighton (1970), building a leading London real estate and finance practice. The transatlantic combination in 2018 brought together more than 1,200 lawyers and roughly $840 million in revenue at closing, forming a fully integrated global partnership.
Practice Areas & Innovation
BCLP provides full-service legal capabilities, including M&A, capital markets, securities, corporate governance, litigation, dispute resolution, finance, real estate, tax, intellectual property, data privacy, and international trade. The firm has developed notable expertise in artificial intelligence law, advising clients on compliance with the EU AI Act and on AI-related licensing, IP, and privacy issues. BCLP also deploys legal technology platforms, integrating with Litera Foundation for matter management, and offers a horizon-scanning tool for regulatory compliance. Its three strategic growth engines are Litigation & Investigations, Mid-Market Transactions, and Real Estate as an asset class.
Recent Developments
In 2023 BCLP transitioned from a co-chair model to a single-leadership structure, electing Steven Baumer as Global CEO. The firm bolstered its intellectual property team by hiring a 15-lawyer group from Dentons in 2023, absorbed Seattle’s Harrigan Leyh Farmer & Thomsen in 2024, and opened offices in Riyadh and Al Khobar, Saudi Arabia, in 2025. It closed its Moscow office in 2022 following the invasion of Ukraine and exited Hong Kong and Singapore in 2025, refocusing on its core markets. Financial performance accelerated, with record revenue of $912 million and profits per equity partner of $1.38 million in fiscal year 2025, as reported by Bloomberg Law.
Global Reach
BCLP maintains offices in major business centers across the United States, Europe, the Middle East, and formerly in Asia. The London office alone houses more than 300 lawyers advising over 25 FTSE 100 companies. The firm serves clients in more than 150 jurisdictions and has been recognized for diversity initiatives, including the creation of an Inclusion & Diversity Client Relationship Partner role. Its 2024 brand consolidation to ‘BCLP’ marked the culmination of six years of integration following the landmark merger.
Key Products
Litigation & Dispute Resolution
Complex commercial litigation, arbitration, investigations, and regulatory defense.
Finance
Banking, lending, project finance, structured finance, and restructuring.
Tax & Private Client
Corporate tax, international tax planning, and wealth management.
Intellectual Property & Technology
IP prosecution, licensing, AI law, data privacy, and cybersecurity.
Energy & Natural Resources
Renewable energy projects, oil & gas, mining, and infrastructure.
Food & Agribusiness
Sector-specific legal support for the food supply chain.
Sports, Media & Entertainment
Broadcasting rights, sponsorship, and athlete representation.
AI Legal Services
Advisory on regulatory compliance (e.g., EU AI Act), AI-related IP, licensing, and privacy.
Corporate & Finance Transactions
Covers M&A, capital markets, securities, corporate governance, commercial contracts, technology transactions, data privacy, and investment management.
Data Privacy & Security
Global team advising on AI regulation, cross‑border data transfers, and cybersecurity.
M&A and Corporate Finance
Cross-border mergers, acquisitions, joint ventures, capital markets, and securities advisory.
Real Estate
Full‑service real estate practice including development, finance, leasing, and funds.
Litigation & Investigations
Complex commercial litigation, government contracts, False Claims Act defense, and regulatory disputes.
Technology Transactions
Specializes in software licensing, cloud subscriptions (SaaS, IaaS, PaaS), systems integration, and large‑scale ERP implementations.
BCLP Client Intelligent
The firm’s methodology for integrating legal, commercial, and market insight into client deliverables.
Intapp Workspaces
Matter‑centric collaboration software used by BCLP to streamline workflow and knowledge sharing.
iManage (with Litera Foundation)
Document management platform used for secure file storage and retrieval.
Offices & Headcount
2500 employees (approx.)
Key Persons
- Steven M. Baumer
Chief Executive Officer (CEO)