Online legal research
The trusted platform for Westlaw US legal research
From intelligent legal tools to trusted US content, Westlaw delivers everything you need to research confidently and work the way that suits you
The right research tools, tailored to how you work
At the forefront of innovation is Westlaw Edge with CoCounsel, our most advanced research experience powered by GenAI. It builds on the trusted strength of Westlaw Edge, which itself is built on the foundational depth of Westlaw Classic. Designed to evolve with your needs, each version extends the features of the previous, offering increasing depth, speed, and intelligence.
See how each version aligns with the way you work - today, and as your legal work evolves.
Westlaw Edge with CoCounsel
Our most advanced research experience powered by GenAI
Westlaw Edge
Smarter tools, sharper insights
Westlaw Classic
The trusted foundation for U.S. legal professionals
Westlaw Edge with CoCounsel
AI-Assisted Research
Faster answers to legal questions
GenAI-Assisted Research rapidly searches Westlaw’s trusted database and returns a detailed summary with links to key cases, statutes, and regulations. The AI searches and summarises Westlaw’s proven, reliable content, with supporting citations or supporting materials.
- Cut down time spent sifting through search results and summarising the results yourself
- Easily access supporting authority for verification and follow-up research
- Ask a question as if you are talking to a colleague and get a synthesised summary grounded in Westlaw’s trusted content
- Refine and hone your results in a conversational manner so you know the research is going in the right direction
AI Jurisdictional Surveys
Quickly assess laws across jurisdictions
Speed up your survey creation by retrieving a customised and relevant compilation of laws across all topics and U.S. jurisdictions. Understand variances as they relate to compliance activities, refine a legal argument, or identify new or emerging policy trends.
- Ask a question and select the jurisdictions for your survey
- Get key differences for each jurisdiction with KeyCite flags and resource links
- If no precedent exists, receive a clear indication instead of a blank response
- Easily update your survey by re-running it as needed
Westlaw Edge
Quick Check
Identify gaps in your legal documents
Use Quick Check to improve the quality and thoroughness of your work without sacrificing time. Generate an AI-enhanced report indicating authority that may have been missed in traditional research, plus find authority contrary to your opponent’s position.
- Upload a brief – whether yours or your opponent’s
- Identify in minutes, any bad law, surface additional highly relevant authority, or authority contrary to what your opponent cited
Litigation Analytics
Improve your strategy with actionable data
Powered by the largest collection of federal and state dockets, Litigation Analytics compiles information on judges, courts, damages, attorneys, law firms, and case types to help you build the strongest case strategy across the most practice areas.
- Know your opponent in terms of their experience, success record on motions, and how the legal organisation fares for a motion in front of your judge
- Quickly answer questions about likely outcomes, schedules, and costs
Keycite Overruling Risk
Trust you are citing good law
Overruling Risk warns you when a point of law has been implicitly undermined based on its reliance on an overruled or otherwise invalid prior decision.
- See a warning icon integrated into your research
- Use term navigation to easily pinpoint the language within a case that has been overruled
- Avoid reviewing each case manually to determine whether it cites an implicitly overruled point of law
WestSearch Plus
Get predictive research suggestions
Avoid crafting complex queries with the most advanced legal search engine, powered by artificial intelligence and built on our proprietary editorial enhancements. Search with natural language terms and get type-ahead suggestions, surfacing the most relevant information at the top of your results list.
- Enter your search terms and WestSearch Plus will anticipate your search objectives
- Instantly receive answers to thousands of types of legal questions so you get to the heart of your matter faster
Statutes Compare & Regulations Compare
See exactly what has changed over time
Eliminate the need to manually compare legislative changes and helps you better understand the intent of the changes to the law and whether the language has become restrictive.
- With just one click, easily see the most recent changes to a statute or regulation, and compare any two versions
- Get coverages for all statutory content and federal regulations, plus state regulations in select states
- Toggle to the next and previous difference when comparing
- Download, print, or email the comparison
Westlaw Classic
Authoritative content
Most current collection of case laws, statutes and regulations
Westlaw offers a comprehensive collection of state and federal case law, statutes, regulations, court rules, and administrative materials.
- full coverage of statutes and regulations covering all 50 states, District of Columbia, and other territories
- top analytical resources such as Wright & Miller Federal Practice and Procedure(R), and more
- Litigation materials including pleadings, motions, and memoranda for all 50 states, state and federal appellate briefs, trial court orders, expert testimony, and much more
KeyCite
Most complete, accurate and up-to-the-minute citation service
Work confidently with the ability to quickly verify whether a case, statute, or other legal authority is still good law
West Key Number System
The master classification system of U.S. case law
Pinpoint legal issues and quickly find relevant cases addressing a specific point of law in any jurisdiction. Rely on arguments that reflect the true nature of the law.
Headnotes
Review points of law addressed by court and how it ruled
Rely on summaries of specific points of law addressed in a particular case, written by our lawyer writers. Applicable headnotes are always listed at the top of a case to easily identify those that match your facts and the desired outcome.
Notes of Decisions
Quickly understand the most current interpretation of the law
Connect brief summaries of important cases to the statute or regulation they interpret. Summaries are also organised by topic or procedure to allow you to focus on particular applications of the statute or regulation.
Trusted legal research to deliver the best outcomes for your needs
Whether you’re solving complex legal questions or working at speed, there’s a Westlaw plan to match.
Westlaw Edge with CoCounsel
Westlaw Edge
Westlaw Classic
Authoritative Content
Premier content such as primary law, secondary sources, and litigation materials.
KeyCite*
Most complete and accurate citator to ensure you rely on good law.
Key Number System
Most comprehensive and widely used indexing system for caselaw.
Headnotes
Concise summaries of the pointe of law discussed in a case.
Notes of Decisions
Brief summaries of important cases that interpret a statute or regulation.
Quick Check
Find highty relevant authority that traditional research may have missed.
Litigation Analytics
Data-driven insights on judges, courts, damages, attorneys, law firms, and case types.
KeyCite Overruling Risk
Citator that warns you when a point of law in a case has been implicitly undermined
WestSearch Plus
Predictive research suggestions and the most relevant information for your legal issue
Statute Compare and Regulations Compare
Shows how any two statutes or regulations have changed over time.
Jurisdictional Surveys
Retrieve a compilation of laws across all US. jurisdictions.
GenAI
Al-Jurisdictional Surveys
Use GenAl to create comprehensive, up-to-date legal surveys across all relevant jurisdictions.
Al-Assisted Research
GenAl searches Westlaw content to produce detailed summaries with links to trusted authority.
What do our customers think?
Get Westlaw Edge and don't hesitate. It is absolutely worth it. It'll make you a better attorney. It'll make your firm better. And you'll serve your clients better than you have before
Steven Smelser, Partner at Yukevich Cavanaugh
I use Quick Check for my own briefs, to give me peace of mind that I didn't miss something or that at the very least I had looked at it and made a determination. That helps me sleep at night.
Jeunesse M. Rutledge, Associate, Reinhart Boerner Van Deuren s.c.
To have this analytical information integrated within Westlaw Edge is a game changer.
Eleanor Gonzalez, Coordinator, Research and Information Services, Shearman & Sterling LLP
Clients are looking for value without sacrificing quality. We use technology like Westlaw Edge to offer just that. It allows us to conduct research with greater efficiency without sacrificing accuracy.
Kay Kim, Senior Director, Practice Innovation, Crowell & Moring LLP
Awards & recognition
Experience it for yourself today
Whether you choose the power of AI-enhanced research or the trusted essentials of Westlaw, you’ll get the tools you need to move faster, think deeper, and deliver with confidence
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