Puerto Rico ranks #51 among US states for total patents filed in 2021, with 162 patents from 105 inventors across 32 cities. On a per-capita basis that is 0.1 patents per 1,000 residents, a standard benchmark for comparing state-level R&D intensity.
Top Cities in Puerto Rico 2021
| Rank | City | Patents | Inventors |
|---|---|---|---|
| #1 | San Juan, PR | 58 | 35 |
| #2 | Rincón, PR | 33 | 3 |
| #3 | Aguadilla, PR | 11 | 10 |
| #4 | Mayagüez, PR | 7 | 7 |
| #5 | Guaynabo, PR | 6 | 5 |
| #6 | Dorado, PR | 6 | 5 |
| #7 | Bayamón, PR | 5 | 5 |
| #8 | Ponce, PR | 3 | 3 |
| #9 | Humacao, PR | 3 | 3 |
| #10 | Caguas, PR | 2 | 2 |
| #11 | Cabo Rojo, PR | 2 | 2 |
| #12 | Isabela, PR | 2 | 2 |
| #13 | Peñuelas, PR | 2 | 2 |
| #14 | Trujillo Alto, PR | 2 | 1 |
| #15 | Coamo, PR | 2 | 2 |
| #16 | Manatí, PR | 2 | 2 |
| #17 | Añasco, PR | 1 | 1 |
| #18 | Arecibo, PR | 1 | 1 |
| #19 | Arroyo, PR | 1 | 1 |
| #20 | Barceloneta, PR | 1 | 1 |
| #21 | Carolina, PR | 1 | 1 |
| #22 | Cidra, PR | 1 | 1 |
| #23 | Guayama, PR | 1 | 1 |
| #24 | Hatillo, PR | 1 | 1 |
| #25 | Juana Díaz, PR | 1 | 1 |