Make speed and accuracy your competitive advantage for mergers and acquisitions
CoCounsel Legal handles the time-intensive work — from due diligence and transactional drafting to negotiation intelligence — so you can focus on strategy, clients, and closing deals
Mergers and acquisitions (M&A) move fast and your clients are counting on you to stay a step ahead
Multijurisdictional complexity creates bottlenecks
M&A deals span corporate, tax, antitrust, IP, and more. With $1.4 trillion in cross-border transactions*, attorneys need instant expert answers to navigate complex regulations.
*LSEG Data & Analytics. Global Mergers & Acquisitions Review, Full Year 2025 (Legal Advisors), p. 2.
CoCounsel Legal eliminates bottlenecks by giving attorneys instant access to expert research across every practice area involved in the deal.
Thousands of documents create quality control and malpractice risks
Firms conducting due diligence must review massive volumes of documents while coordinating review across multiple offices, a recipe for missing key issues that place high-stakes deals at risk.
CoCounsel Legal's Tabular Analysis cuts document review time by up to 63% across up to 10,000 documents*, so partners can verify quality and close with confidence.
*Thomson Reuters customer surveys, 2024. Cited in Thomson Reuters CoCounsel Legal Brochure, v4.0, p. 4.
Uncertain drafting puts high-stakes deals at risk
M&A lawyers waste time hunting for precedents, patching uncertain clauses, and drafting that misses jurisdiction requirements or outdated standards that create malpractice exposure on deals with high visibility.
CoCounsel Legal delivers research-backed, jurisdiction-aware first drafts so partners can review rather than start from scratch.
See how CoCounsel Legal supports M&A practice from due diligence to closing
CoCounsel Legal: The AI solution built for every phase of your M&A practice — from initial engagement to closing
Deliver thorough due diligence on every deal — no matter your team size
M&A due diligence demands consistency across thousands of documents. CoCounsel Legal creates organized, partner-ready analysis so you can delegate reviews and stay focused on strategy.
CoCounsel Legal helps you deliver better results:
- Review up to 10,000 documents with 100 customizable questions simultaneously using Tabular Analysis, allowing partners to instantly verify findings across every reviewer on the deal team.
- Quickly identify critical terms, risks, and missing provisions across large document sets — with consistent analysis regardless of which attorney handles which documents.
- Scale deal volume without scaling headcount, so your firm can pursue more transactions — and larger ones — without adding attorneys.
Receive first drafts grounded in expert legal content
Transactional drafting is one of the highest-risk parts of M&A practice. CoCounsel Legal produces first drafts backed by Westlaw and Practical Law authority you can stand behind.
CoCounsel Legal helps you deliver better results:
- Upload firm precedent documents, describe the matter, and receive a research-backed, jurisdiction-aware first draft grounded in Practical Law content and your firm's own knowledge.
- Stay in your document to review redlines, modify provisions, and flag issues — no copy-paste, no platform switching, and no lost context.
- Use playbook-based comparisons to benchmark counterparty drafts against firm-standard positions and maintain consistency across the deal team.
Enter every negotiation backed by current market intelligence
M&A negotiations demand real-time market intelligence. Without this intelligence, attorneys cannot effectively negotiate or justify positions — and your clients won't wait for answers.
CoCounsel Legal helps you deliver better results:
- Use What's Market to pull empirical evidence from thousands of public and private M&A deals — giving you the data to counter opposing counsel's positions with authority.
- Rely on Deep Research to answer complex, multistep questions across corporate law, securities, tax, antitrust, and other disciplines in minutes so you can respond to clients in real time.
- Research, analyze, and draft without leaving CoCounsel, ensuring that deal momentum never stalls.
Why M&A attorneys trust CoCounsel Legal
CoCounsel Legal is built on authoritative Westlaw and Practical Law content — delivering the reliability and institutional credibility M&A attorneys demand on high-stakes transactions.
Conduct 63% faster due diligence
CoCounsel Legal enables firms to complete due diligence faster without cutting corners or deploying larger associate teams. Attorneys review the target's contracts and records against Practical Law Standard Documents and current market terms, so deviations and risk surface against an authoritative benchmark.
Reclaim hours on every matter
CoCounsel Legal handles the heavy lifting of research, document review, and drafting, freeing M&A attorneys to focus on the strategic work that justifies premium rates. Users move more than twice as fast on document review and contract drafting.
Compete for a larger share of a $2.3T market*
M&A firms need a technology solution that scales without adding headcount. CoCounsel Legal lets mid-sized firms compete for larger deals and large firms pursue more deals simultaneously at competitive rates — a measurable differentiator.
*U.S. M&A activity: $2.3 trillion (up 57%, accounting for 50% of global deals — highest percentage since 1998, based on the Thomson Reuters Institute 2026 Report on the State of the US Legal Market, Thomson Reuters, January 2026, p. 5.)
Explore our insights and resources
Thomson Reuters acquisition delivers market-aware intelligence for transactional professionals
Thomson Reuters has acquired an AI-native platform that transforms corporate transactional deal data into structured, searchable market intelligence for legal and finance professionals.
Why AI is a must-have for your transactional law firm
AI adoption for transactional firms has moved from a competitive advantage to a competitive necessity, essential for meeting client expectations with faster, tech-enabled service.
Step-by-step guide to M&A legal due diligence
Due diligence is the heart of a successful merger or acquisition. Learn how to organize and conduct a legal due diligence review for U.S. public and private deals.
Frequently asked questions
CoCounsel Legal supports M&A work across the full deal life cycle, from initial client engagement and letter of intent through due diligence, transaction documentation, negotiation, and closing. It supports teams at every level — partners using strategic research and What’s Market analytics, senior associates handling transactional documentation and due diligence coordination, junior associates reviewing documents and generating initial drafts, and paralegals managing document review and checklist administration.
CoCounsel Legal’s Tabular Analysis allows review teams to process up to 10,000 documents simultaneously, with up to 100 customizable questions, and presents results in a sortable, filterable table with verifiable citations. This capability reduces document review time by up to 63%, enabling firms to handle large deal volumes — including multibillion-dollar transactions — without proportionally increasing associate headcount. Partners can instantly verify findings and reduce oversight time while ensuring consistency across all reviewers.
CoCounsel Legal produces end-to-end first drafts from your firm’s own precedent documents or from Practical Law Standard Documents — with Practical Law integrated into how the AI reasons, not retrieved after the fact. Simply describe the matter in plain language and CoCounsel Legal determines the right approach. It then produces a research-backed, jurisdiction-aware draft and lets you edit directly in-app — no prompt engineering, no platform switching, no separate research step required.
What’s Market is the Thomson Reuters database of private and public mergers and acquisitions deal terms, providing access to thousands of private acquisition agreements and public merger agreements with expert summaries and analytics. It enables attorneys to generate on-demand data visualizations showing market trends by industry, deal size, and year. It also supports negotiating positions with empirical evidence of what is truly “market” in current deals, covering earnouts, indemnification provisions, and purchase price adjustments, giving attorneys the empirical foundation to defend positions and counter opposing counsel in real time.
Yes. CoCounsel Legal gives mid-sized firms the same research depth, drafting quality, and due diligence capacity as larger competitors without proportionally expanding associate ranks. Tabular Analysis allows small teams to process up to 10,000 documents per analysis, volumes previously requiring large associate teams. What’s Market provides the same market intelligence that large firms compile through hundreds of completed transactions. The result is more matters per attorney, protected margins, and a credible answer for clients seeking large-firm sophistication at competitive billing rates.
Close deals faster with less risk
CoCounsel Legal gives mergers-and-acquisitions attorneys one AI solution for research, due diligence, drafting, and negotiation intelligence, built on trusted Westlaw and Practical Law legal content.
Have questions? Contact a representative.