| Rank | Firm | Patent Attorneys/Agents |
|---|---|---|
| 1 | Small firm, in-house, unaffiliated | 40 |
| 2 | Senniger Powers Leavitt and Roedel | 9 |
| 3 | Thompson Coburn | 6 |
| 4 | Harness Dickey and Pierce | 4 |
| 5 | Blackwell Sanders | 3 |
| 5 | Armstrong Teasdale | 3 |
| 7 | Sonnenschein Nath & Rosenthal | 2 |
| 7 | Polster Lieder Woodruff and Lucchesi | 2 |
| 9 | Bryan Cave | 1 |
| 9 | Husch & Eppenberger | 1 |
