| Rank | Firm | Patent Attorneys/Agents |
|---|---|---|
| 1 | Small firm, in-house, unaffiliated | 134 |
| 2 | Woodcock Washburn Kurtz MacKiewicz and Norris | 63 |
| 3 | Caesar Rivise Bernstein Cohen and Pokotilow | 24 |
| 3 | Volpe and Koenig | 24 |
| 5 | Drinker Biddle & Reath | 23 |
| 6 | Synnestvedt and Lechner | 21 |
| 7 | Akin, Gump, Strauss, Hauer & Feld | 16 |
| 8 | Duane Morris | 12 |
| 9 | Morgan, Lewis & Bockius | 11 |
| 10 | Reed Smith | 10 |
| 10 | Cozen O'Connor | 10 |
| 12 | Schnader Harrison Segal & Lewis | 6 |
| 12 | Dechert | 6 |
| 14 | Wolf, Block, Schorr and Solis-Cohen | 5 |
| 14 | DLA Piper Rudnick Gray Cary | 5 |
| 16 | Blank Rome | 4 |
| 17 | Pepper Hamilton | 3 |
| 18 | Fox Rothschild | 2 |
| 19 | Ballard Spahr Andrews & Ingersoll | 1 |
| 19 | Montgomery, McCracken, Walker & Rhoads | 1 |
