| Rank | City | Patent Attorneys/Agents |
|---|---|---|
| 1 | Philadelphia | 381 |
| 2 | Pittsburgh | 267 |
| 3 | King Of Prussia | 42 |
| 4 | Allentown | 38 |
| 5 | Valley Forge | 36 |
| 6 | Doylestown | 18 |
| 7 | Harrisburg | 17 |
| 8 | West Chester | 16 |
| 9 | Malvern | 15 |
| 10 | Media | 14 |
| 10 | Newtown Square | 14 |
| 12 | Fort Washington | 11 |
| 12 | Murrysville | 11 |
| 14 | Monroeville | 10 |