Delaware ranks #39 among US states for total patents filed in 2021, with 953 patents from 595 inventors across 30 cities. On a per-capita basis that is 1.0 patents per 1,000 residents, a standard benchmark for comparing state-level R&D intensity.
Top Cities in Delaware 2021
| Rank | City | Patents | Inventors |
|---|---|---|---|
| #1 | Wilmington, DE | 369 | 229 |
| #2 | Newark, DE | 155 | 135 |
| #3 | Nonatum Mills, DE | 83 | 35 |
| #4 | Hockessin, DE | 74 | 50 |
| #5 | Middletown, DE | 69 | 35 |
| #6 | Bear, DE | 53 | 35 |
| #7 | Claymont, DE | 37 | 10 |
| #8 | Dover, DE | 30 | 23 |
| #9 | Lewes, DE | 23 | 7 |
| #10 | New Castle, DE | 20 | 11 |
| #11 | Townsend, DE | 8 | 2 |
| #12 | Georgetown, DE | 7 | 1 |
| #13 | Bethany Beach, DE | 3 | 2 |
| #14 | Harrington, DE | 3 | 3 |
| #15 | Centreville, DE | 2 | 1 |
| #16 | Milford, DE | 2 | 1 |
| #17 | Millsboro, DE | 2 | 2 |
| #18 | Garton Development, DE | 1 | 1 |
| #19 | Marydel, DE | 1 | 1 |
| #20 | Nanticoke Farms, DE | 1 | 1 |
| #21 | Sharpley, DE | 1 | 1 |
| #22 | Yorklyn, DE | 1 | 1 |
| #23 | Arden, DE | 1 | 1 |
| #24 | Delaware City, DE | 1 | 1 |
| #25 | Laurel, DE | 1 | 1 |