Louisiana ranks #40 among US states for total patents filed in 2021, with 944 patents from 687 inventors across 109 cities. On a per-capita basis that is 0.2 patents per 1,000 residents, a standard benchmark for comparing state-level R&D intensity.
Top Cities in Louisiana 2021
| Rank | City | Patents | Inventors |
|---|---|---|---|
| #1 | Baton Rouge, LA | 178 | 120 |
| #2 | New Orleans, LA | 119 | 92 |
| #3 | Lafayette, LA | 89 | 77 |
| #4 | Shreveport, LA | 53 | 39 |
| #5 | Metairie, LA | 34 | 26 |
| #6 | Houma, LA | 32 | 21 |
| #7 | Mandeville, LA | 30 | 22 |
| #8 | Youngsville, LA | 26 | 14 |
| #9 | New Iberia, LA | 21 | 11 |
| #10 | Lake Charles, LA | 19 | 14 |
| #11 | Thibodaux, LA | 18 | 12 |
| #12 | Covington, LA | 17 | 14 |
| #13 | Kenner, LA | 14 | 11 |
| #14 | Monroe, LA | 13 | 8 |
| #15 | Slidell, LA | 13 | 11 |
| #16 | Prairieville, LA | 13 | 5 |
| #17 | Bossier City, LA | 10 | 9 |
| #18 | Belle Chasse, LA | 8 | 4 |
| #19 | Carencro, LA | 8 | 3 |
| #20 | Jefferson, LA | 8 | 7 |
| #21 | Harahan, LA | 8 | 6 |
| #22 | Breaux Bridge, LA | 7 | 7 |
| #23 | Luling, LA | 7 | 5 |
| #24 | Erath, LA | 7 | 4 |
| #25 | Waggaman, LA | 7 | 6 |