Keith Martin

Mary Huff is a top attorney recognized by Best Lawyers in the practice area(s) of Family Law. Mary, who practices law in Fairfax, Virginia, has been recognized since 2024. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Mary is held by other top lawyers in the same geographic and legal practice area.

Michael L. Sibarium is a top attorney recognized by Best Lawyers in the practice area(s) of Antitrust Law. Michael L., who practices law in Washington, District of Columbia, has been recognized since 2018. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Michael L. is held by other top lawyers in the same geographic and legal practice area.

An expert on ERISA’s fiduciary rules and government regulation of health insurance, including the Affordable Care Act (ACA), Jon Breyfogle counsels numerous financial services firms, health insurers, and their D.C.-based trade associations on retirement and health matters. His practice includes advice on regulatory and legislative strategies, compliance, and defense of federal and state investigations. Jon has testified before Congress and at Department of Labor hearings on both retirem...

Leon Fresco is a top attorney recognized by Best Lawyers in the practice area(s) of Immigration Law. Leon, who practices law in Washington, District of Columbia, has been recognized since 2020. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Leon is held by other top lawyers in the same geographic and legal practice area.

Bill Burgess’ practice focuses on appellate litigation across a broad range of subject matter, including patent litigation, commercial litigation, and regulatory matters. He has argued appeals in most of the United States courts of appeals, including several in the Federal Circuit. He has been to trial several times, joining trial teams to brief dispositive motions or prepare for appeals, and has also practiced before agencies such as the Patent & Trademark Office, International Tra...

Steven A. Sigsbury specializes in tax and estate planning, estate and trust administration, fiduciary responsibility, and business and real estate planning. Steven’s laid-back personality allows him to relate to clients and instill a sense of trustworthiness at the outset of any engagement. Steven analyzes and simplifies complex problems and offers clients individualized solutions. As a tax and estate planner, Steven works with clients to develop tax-efficient estate plans that accompli...

David M. McCullough is a top attorney recognized by Best Lawyers in the practice area(s) of Energy Law. David M., who practices law in Washington, District of Columbia, has been recognized since 2025. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which David M. is held by other top lawyers in the same geographic and legal practice area.

Practice Experience Jonathan is a leading global authority on international disputes and investment, as well as complex negotiations and crisis management. As head of Latin American arbitration, he has successfully advised on some of the most critical issues of the era in Latin America and beyond, such as the cultural patrimony of Machu Picchu, the new Ecuador international airport, the Argentine sovereign debt crisis, the development of the Peruvian energy sector and the Panama Canal expansi...

Lawrence M. Prosen is a top attorney recognized by Best Lawyers in the practice area(s) of Arbitration, Construction Law and Litigation - Construction. Lawrence M., who practices law in Washington, District of Columbia, has been recognized since 2022. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Lawrence M. is held by other top lawyers in the same geographic and legal practice area.

Clients turn to David Kochanski when they require practical and cutting edge approaches to efficiently and economically achieve their business objectives. Clients hire him for their complex real estate transactions because he is not only a recognized leader within the field, but also because he is not afraid to make unconventional suggestions that he can back up with solid legal and business rationale. David’s clients trust his judgment and have confidence in his advice. David’s a...