(1) Log in to the official website of the Algerian Intellectual Property Office ( e-services.inapi.org/SI）；
(2) Select "Base de donnee" on the page to enter the database page;
(3) On the database page, select "Rechercher un Brevet" to enter the patent query page;
(4) Enter the relevant patent information on the patent query page and click "Search" to query the patent.
(5) Click on the patent number you want to query to view the specific information of the patent.
| invention patent | |||
| year | Annual fee (DZD) | year | Annual fee (DZD) |
| 2 | 5000 | 12 | 12000 |
| 3 | 5000 | 13 | 12000 |
| 4 | 5000 | 14 | 12000 |
| 5 | 5000 | 15 | 12000 |
| 6 | 8000 | 16 | 18000 |
| 7 | 8000 | 17 | 18000 |
| 8 | 8000 | 18 | 18000 |
| 9 | 8000 | 19 | 18000 |
| 10 | 8000 | 20 | 18000 |
| 11 | 12000 |
| Appearance design | |
| year | Annual fee (DZD) |
| 2-10 | 1000 |