Steven A. "Steve" Tyrrell

Matt Moore maintains a sophisticated real estate and commercial litigation practice. He has successfully litigated complex contract disputes involving ADA architectural issues, housing discrimination, property contamination and defects, mortgage fraud, broker misconduct and premises liability. Over the past several years, Matt has successfully defended several ADA, premises liability, contamination and defect claims. He has obtained and collected several million-dollar verdicts for his commer...

Pamela J. Marple is a top attorney recognized by Best Lawyers in the practice area(s) of Commercial Litigation. Pamela J., 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 Pamela J. is held by other top lawyers in the same geographic and legal practice area.

Linda E. Rosenzweig is a top attorney recognized by Best Lawyers in the practice area(s) of Employee Benefits (ERISA) Law. Linda E., 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 Linda E. is held by other top lawyers in the same geographic and legal practice area.

John Parker Sweeney has more than 30 years of experience defending major class action and mass torts involving product liability and warranty, consumer protection, environmental, and toxic tort cases, allowing him to tailor an appropriate litigation response for any company to resolve "bet-the-company" risks. He regularly serves as national litigation counsel, creating and supervising comprehensive defense strategies in class action and mass tort cases across the country, most recently sweepi...

Mindy Herzfeld is a top attorney recognized by Best Lawyers in the practice area(s) of Tax Law. Mindy, 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 Mindy is held by other top lawyers in the same geographic and legal practice area.

John McBride’s effectiveness as a land use attorney is built upon his accumulated experience; established reputation among staff and elected officials throughout localities in Northern Virginia; and an ability to build consensus through factual, detailed presentation of information. Prior to attending law school, John worked as a City Planner, a land acquisition and right-of-way agent, and a real estate leasing agent for local governments in Northern Virginia. This decade of experience ...

Linda Singer represents governments, attorneys general and other public entities in high-impact, high-stakes litigation and investigations as head of the firm’s Public Client practice area. The former Attorney General of the District of Columbia, Linda’s knowledge and experience includes serving in the public, not-for-profit and private sectors. As AG, Linda gained invaluable insight into the duties of attorneys general and how law firms with the right resources and experience can...

Victoria Lauterbach is a top attorney recognized by Best Lawyers in the practice area(s) of Energy Law. Victoria, 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 Victoria is held by other top lawyers in the same geographic and legal practice area.

Louis Mazawey brings decades of experience as an authority on the tax aspects of employee benefits in all forms to his work at Groom. As counsel to major insurance companies and a variety of plan sponsors—including corporate employers, trade associations, and public retirement systems—Lou has worked closely with qualified plans, 403(b) and 457 plans, IRAs, employee stock ownership plans, executive compensation, retiree medical benefits, plan terminations, mergers and spinoffs, the...

Mr. Colten was born in New York City and has been a long-time resident of Virginia. After serving as Assistant Commonwealth's Attorney in Fairfax County for two years, Mr. Colten entered private practice in Northern Virginia. He was a founding member and principal of Surovell, Jackson, Colten & Dugan, P.C. and its predecessor and successor firms, prior to forming Colten | Watson | Vincent Law Group P.C. In 1965, Mr. Colten received his B.S. with a major in sociology from American Universi...