| Rank | Firm | Patent Attorneys/Agents |
|---|---|---|
| 1 | Small firm, in-house, unaffiliated | 39 |
| 2 | Senniger Powers Leavitt and Roedel | 17 |
| 3 | Polster Lieder Woodruff and Lucchesi | 13 |
| 4 | Thompson Coburn | 9 |
| 5 | Armstrong Teasdale | 6 |
| 6 | Bryan Cave | 4 |
| 7 | Husch & Eppenberger | 2 |
| 8 | Harness Dickey and Pierce | 1 |
| 8 | Blackwell Sanders | 1 |
