| Oblon Spivak Mcclelland Maier and Neustadt | Alexandria, VA (US) | 92,642 | 16.3% |
| Connolly Bove Lodge Hutz | Wilmington, DE (US) | 6,099 | 11.7% |
| Burns Doane Swecker and Mathis | Alexandria, VA (US) | 31,307 | 6.5% |
| Keil Weinkauf | | 4,788 | 6.5% |
| Arent Fox Kintner Plotkin Kahn | Washington, DC (US) | 3,631 | 6.4% |
| Pillsbury Winthrop | San Francisco, CA (US) | 4,795 | 4.7% |
| Armstrong Westerman and Hattori | Washington, DC (US) | 2,266 | 4.0% |
| Sughrue Mion Zinn Macpeak and Seas | Washington, DC (US) | 43,746 | 3.8% |
| Norris Mclaughlin and Marcus | New York, NY (US) | 3,671 | 3.1% |
| Wenderoth Lind Ponack | Washington, DC (US) | 52,963 | 2.7% |
