| Oblon Spivak Mcclelland Maier and Neustadt | Alexandria, VA (US) | 92,642 | 3.2% |
| Michael Best and Friedrich | Milwaukee, WI (US) | 27,346 | 1.6% |
| Mcdonnell Boehnen Hulbert Berghoff | Chicago, IL (US) | 19,689 | 1.2% |
| Fish and Richardson | Boston, MA (US) | 87,893 | 0.72% |
| Arent Fox Kintner Plotkin Kahn | Washington, DC (US) | 3,631 | 0.67% |
| Webb Law Firm | Pittsburgh, PA (US) | 14,580 | 0.64% |
| Sughrue Mion | Washington, DC (US) | 102,003 | 0.39% |
| Foley and Lardner | Chicago, IL (US) | 83,621 | 0.38% |
| Birch Stewart Kolasch and Birch | Merrifield, VA (US) | 99,025 | 0.35% |
| Nixon and Vanderhye | Arlington, VA (US) | 57,887 | 0.2% |
