Charles W. "Charlie" Katz

Habib F. Ilahi counsels business entities and individuals in highly regulated industries through complex health care, procurement, and other government enforcement investigations and litigation, as well as through general white collar criminal and civil defense matters. As a former federal prosecutor with the Fraud Section of the Department of Justice, Civil Division, Mr. Ilahi gained extensive expertise in matters involving the False Claims Act (FCA), the Anti-Kickback Statute, and the Stark...

Practicing in the area of energy law, Elizabeth Whittle counsels clients with respect to natural gas, hydroelectric and electric regulatory and transactional matters. What do you focus on? Federal Regulatory I am an active practitioner before the Federal Energy Regulatory Commission, representing clients in hearings, settlement conferences and adversary proceedings in the natural gas, electric and hydroelectric areas. I am active in proceedings involving regional transmission organizations an...

Timothy J. V. Walsh is a top attorney recognized by Best Lawyers in the practice area(s) of Energy Law. Timothy J. V., who practices law in Washington, District of Columbia, has been recognized since 2023. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Timothy J. V. is held by other top lawyers in the same geographic and legal practice area.

Le Dolan is a commercial litigation trial attorney helping businesses resolve commercial and transactional disputes in pre-litigation stages, and in federal and state courts and regulatory agencies nationwide. Le has significant experience in the aviation and real estate and construction industries and heads the firm’s Tax Credit/Affordable Housing Litigation and Workout team. What do you focus on? I focus my practice on two main areas. Business and Commercial Disputes I work with compa...

Whether helping her clients negotiate to draft commercial leases or working collaboratively to resolve complex family law issues, Leslye Fenton brings a uniquely powerful combination of sensitivity and tenacity to her work. As an attorney and trained mediator, Leslye believes in listening carefully to her clients to identify what drives their interests. This key, she says, unlocks the paths toward resolution, successful negotiation and, hopefully, beneficial outcomes. Her practice includes Fa...

John A.C. Keith is a top attorney recognized by Best Lawyers in the practice area(s) of Bet-the-Company Litigation, Commercial Litigation, Legal Malpractice Law - Defendants, Litigation - Trusts and Estates and Trusts and Estates. John A.C., who practices law in Fairfax, Virginia, has been recognized since 2006. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which John A.C. is held by other top lawyers in the same geographic and legal practice area.

David is the managing partner of the Washington, D.C. office, as well as the co-leader of the Investment Management Group. Prior to joining Sullivan & Worcester, David was Special Counsel in the Washington, D.C. office of Gibson, Dunn & Crutcher. He previously served as Assistant General Counsel for Legislation and Investment Company and Adviser Regulation at the Securities and Exchange Commission and as Counsel to SEC Commissioner Aulana Peters.

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Mr. Cassidy focuses on legal issues raised by cross-border business transactions, including antidumping and countervailing duty proceedings, economic sanctions, export controls and customs issues. He is experienced in devising strategies for using trade law procedures, such as the antidumping laws, to achieve business objectives and in resolving disputes between companies and the US government arising from sanctions, export controls and customs laws. Mr. Cassidy served as General Counsel of t...

George Tsai is a top attorney recognized by Best Lawyers in the practice area(s) of Employee Benefits (ERISA) Law. George, who practices law in Washington, District of Columbia, has been recognized since 2024. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which George is held by other top lawyers in the same geographic and legal practice area.