| Oblon Spivak Mcclelland Maier and Neustadt | Alexandria, VA (US) | 92,642 | 11.1% |
| Connolly Bove Lodge Hutz | Wilmington, DE (US) | 6,099 | 3.3% |
| Burns Doane Swecker and Mathis | Alexandria, VA (US) | 31,307 | 2.1% |
| Arent Fox Kintner Plotkin Kahn | Washington, DC (US) | 3,631 | 2.1% |
| Keil Weinkauf | | 4,788 | 1.4% |
| Birch Stewart Kolasch and Birch | Merrifield, VA (US) | 99,426 | 0.54% |
| Sughrue Mion | Washington, DC (US) | 102,482 | 0.4% |
| Finnegan Henderson Farabow Garrett and Dunner | Atlanta, GA (US) | 63,075 | 0.28% |
| Wenderoth Lind Ponack | Washington, DC (US) | 52,963 | 0.24% |
| Nixon and Vanderhye | Arlington, VA (US) | 58,082 | 0.06% |
