Marc R. Cohen

Eugene Goryunov is an intellectual property trial attorney at Cherry Johnson Siegmund James PC in Washington, District of Columbia. He has participated in more than 500 proceedings before the U.S. Patent and Trademark Office. Eugene frequently litigates cases in federal courts across the U.S. and manages appeals at the Federal Circuit. He also represents clients in Section 337 investigations at the U.S. International Trade Commission. Eugene has been recognized in patent law by Chambers USA, ...

Brad M. Dashoff is an attorney in the firm’s Real Estate and Corporate/Business practice groups. He works diligently to create practical solutions that transform his clients’ visions into tangible results on projects in Maryland, Virginia, and Washington, D.C., as well as throughout the United States. He provides practical and insightful guidance on a wide range of real estate issues. Brad counsels developers, investors, families, private equity funds and non-traditional property ...

Colleen C. Jarrott is a top attorney recognized by Best Lawyers in the practice area(s) of Commercial Litigation, Energy Law and Oil and Gas Law. Colleen C., 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 Colleen C. is held by other top lawyers in the same geographic and legal practice area.

Margaret is one of the four founding partners of Rock Creek Energy Group. She has over 18 years of experience counseling and representing a broad swath of electric industry participants on a wide range of federal energy regulatory and administrative litigation matters. She provides strategic counsel to investor-owned utilities, renewable and conventional generators, private equity and institutional investors, developers, and renewable energy providers on transactional, regulatory, and litigat...

Christopher Cole is a nationally-recognized litigator who offers strategic counsel to some of the world’s leading companies on protecting their technology and brands from attack by competitors, regulators and private consumer class action claimants. With a practice that covers a wide range of industries and sectors, Chris brings a practical, creative and individualized approach in advising clients on how to navigate advertising, unfair competition, brand disparagement, reputation and in...

Bryan H. Parr is a top attorney recognized by Best Lawyers in the practice area(s) of Criminal Defense: White-Collar. Bryan H., who practices law in Washington, District of Columbia, has been recognized since 2026. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Bryan H. is held by other top lawyers in the same geographic and legal practice area.

Mary S. Hodgins is a Partner in the firm’s International Trade practice. She has represented domestic and foreign corporations, state-owned enterprises and foreign governments in unfair trade disputes with the United States before the U.S. Department of Commerce, the U.S. International Trade Commission, the U.S. Court of International Trade and the U.S. Court of Appeals for the Federal Circuit. Ms. Hodgins has also advised U.S. importers with regard to a variety of issues relating to U....

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.

Thomas F. Quinn III is a top attorney recognized by Best Lawyers in the practice area(s) of Corporate Law. Thomas F., who practices law in Reston, Virginia, has been recognized since 2022. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Thomas F. is held by other top lawyers in the same geographic and legal practice area.

Stephen Weissman is a top attorney recognized by Best Lawyers in the practice area(s) of Antitrust Law and Litigation - Antitrust. Stephen, 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 Stephen is held by other top lawyers in the same geographic and legal practice area.