Williams & Connolly


Head Office Address:
680 Maine Avenue SW
Washington, D.C.
United States

Telephone:+1 202 434 5000
Fax:+1 202 434 5029

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Quick facts:

Established: 1967
Number of partners: 117
Number of attorneys: 306

Williams & Connolly is widely recognized as one of the nation’s premier litigation firms. Our lawyers routinely handle significant and complex civil, criminal, and administrative cases across the United States and around the globe. The firm maintains a strong tradition of hiring the best and the brightest and training and promoting its lawyers from within, producing closely knit and collaborative teams dedicated to achieving successful outcomes for our clients. 

The firm was founded in 1967 by legendary trial lawyer Edward Bennett Williams. In the tradition of our founder, we share a passionate and principled dedication to excellence and success in all that we do. Over the last five decades, many of the world’s most prominent organizations and individuals have trusted us with their most important and complex litigation, investigation, and arbitration matters.

The firm’s clients include major global companies from virtually every sector, including Pfizer, Disney, Samsung, Intel, Bank of America, Google, The Carlyle Group, Medtronic, AstraZeneca, Genentech, Eli Lilly, 21st Century Fox, and HSBC. In addition, our lawyers have represented numerous law and accounting firms in professional liability and other matters, one reason why the Washington Post has recognized Williams & Connolly as the firm that other professional firms “turn to when they’re in trouble.”

The firm’s robust intellectual property practice successfully represents clients in patent litigation matters worth billions of dollars. In the healthcare and consumer industries, Williams & Connolly serves as national coordinating, trial, and/or resolution counsel for major pharmaceutical, medical device, pharmacy, technology, and consumer products companies in mass torts, multi-district litigation, and class actions. Our lawyers litigate cross-border commercial and other disputes in wide-ranging international litigation and arbitrations. We have handled many of the most complex corporate, financial, and securities disputes stemming from the global financial crisis. We represent companies and individuals in government investigations and prosecutions of all types, including allegations of fraud, corruption, and FCPA violations. Our lawyers also regularly appear before the Supreme Court and state and federal courts of appeals.

Known for our ability to take cases to trial, and the deep bench of lawyers at the firm who have tried civil and criminal matters in courts across the country and internationally, Williams & Connolly is described by Chambers USA as “offering unmatched strength in depth and top-level trial capabilities,” and “[a] class act: a delight to litigate with, and fearsome to litigate against.” In addition, Washingtonian magazine has highlighted the firm’s “uncompromising emphasis on victory.”

Our distinctive approach to litigation has earned the firm top marks from leading publications and ranking services, such as Chambers, Legal 500, The National Law Journal, The American Lawyer, and Benchmark Litigation, both for overall litigation prowess as well as for many practice- or industry-specific types of litigation. We hire the top graduates from the best law schools and provide a collaborative training ground for young litigators, providing clients with the highest-quality representation at every level of seniority and with a cohesive team always working to advance their interests. Vault has ranked Williams & Connolly as one of the top law firms for selectivity, partner-associate relations, career outlook, satisfaction, quality of work, and business outlook.  Williams & Connolly maintains a nearly one-to-one partner-to-associate ratio, ensuring that matters are leanly staffed and that our associates gain significant hands-on experience. Our approach to hiring and advancement from within fosters a unique culture that focuses on teamwork, preparation, and tenacity designed to deliver results.

Civil Litigation and Trial Practice

  • Accountant Liability
  • Administrative Law
  • Antitrust
  • Arbitration
  • Bankruptcy Litigation
  • Class Action
  • Commercial Litigation
  • Directors and Officers Liability
  • Employment Litigation & Counseling
  • Environmental Litigation
  • False Claims Act and Qui Tam
  • Federal Programs and Government Contracts
  • Financial Services and Banking
  • First Amendment and Media
  • Food, Beverage & Pet
  • Food & Drug Administration (“FDA”) Regulation
  • Insurance Disputes
  • International Disputes
  • Law Firm Defense
  • Patent Litigation
  • Products Liability, Torts, and Medicine
  • Real Estate
  • Securities Enforcement
  • Securities Litigation
  • Sports
  • Tax Controversy
  • Trademark and Copyright
  • Unfair Competition, Trade Secrets and Restrictive Covenants

Criminal Defense and Government Investigations

  • Anti-Money Laundering & Economic Sanctions
  • Congressional Investigations
  • Criminal Antitrust
  • Criminal Foreign Corrupt Practices Act (“FCPA”) & Cross-Border Investigations
  • Criminal Securities and Financial Fraud
  • Criminal Tax
  • False Claims Act and Qui Tam
  • Federal Programs and Government Contracts
  • Health Care Fraud
  • Internal Investigations
  • Public Corruption
  • State Attorneys General Investigations

Supreme Court and Appellate Litigation

Transactions and Business Counseling


Updated Aug 2023