Puerto Rico ranks #52 among US states for total patents filed all time, with 2,841 patents from 1,143 inventors across 77 cities. On a per-capita basis that is 0.9 patents per 1,000 residents, a standard benchmark for comparing state-level R&D intensity.
Top Cities in Puerto Rico All Time
| Rank | City | Patents | Inventors |
|---|---|---|---|
| #1 | San Juan, PR | 746 | 272 |
| #2 | Rincón, PR | 318 | 10 |
| #3 | Aguadilla, PR | 183 | 50 |
| #4 | Mayagüez, PR | 177 | 92 |
| #5 | Guaynabo, PR | 143 | 85 |
| #6 | Río Piedras, PR | 132 | 72 |
| #7 | Ponce, PR | 132 | 51 |
| #8 | Dorado, PR | 115 | 34 |
| #9 | Carolina, PR | 109 | 41 |
| #10 | Bayamón, PR | 102 | 44 |
| #11 | Caguas, PR | 62 | 39 |
| #12 | Humacao, PR | 53 | 24 |
| #13 | Isabela, PR | 38 | 19 |
| #14 | Trujillo Alto, PR | 36 | 24 |
| #15 | Arecibo, PR | 32 | 14 |
| #16 | Juana Díaz, PR | 32 | 7 |
| #17 | Cidra, PR | 23 | 7 |
| #18 | Camuy, PR | 18 | 6 |
| #19 | Vega Baja, PR | 17 | 9 |
| #20 | Cabo Rojo, PR | 17 | 9 |
| #21 | San Germán, PR | 17 | 12 |
| #22 | Coamo, PR | 15 | 9 |
| #23 | Río Grande, PR | 14 | 9 |
| #24 | Vega Alta, PR | 14 | 9 |
| #25 | Canóvanas, PR | 14 | 6 |