Patent applications are worldwide patent applications filed through the Patent Cooperation Treaty procedure or with a national patent office.
| 1990 | 2000 | 2005 | 2010 | 2011 | 2012 | 2013 | 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Albania | 386 | 8 | 4 | 3 | 5 | 5 | 8 | 3 | 1 | 1 | |||||
| Bosnia and Herzegovina | 242 | 306 | 9 | 12 | 14 | 22 | 2 | 6 | 12 | 12 | 14 | 5 | 8 | ||
| Bulgaria | 331 | 709 | 52 | 17 | 21 | 14 | 15 | 16 | 11 | 11 | 23 | 18 | 7 | 7 | 6 |
| Croatia | 538 | 649 | 21 | 21 | 32 | 23 | 30 | 17 | 13 | 11 | 15 | 16 | 12 | 11 | |
| Czechia | 4,384 | 244 | 114 | 97 | 150 | 97 | 62 | 72 | 47 | 66 | 54 | 48 | 56 | 59 | |
| Hungary | 1,976 | 4,127 | 497 | 47 | 36 | 66 | 66 | 73 | 64 | 49 | 36 | 36 | 23 | 28 | 13 |
| North Macedonia | 53 | 15 | 1 | 3 | 3 | 4 | |||||||||
| Moldova | 10 | 11 | 11 | 11 | 22 | 29 | 72 | 60 | 64 | 37 | 21 | 15 | 11 | 12 | |
| Montenegro | 136 | 83 | 41 | ||||||||||||
| Poland | 1,315 | 4,899 | 4,555 | 227 | 244 | 247 | 174 | 155 | 139 | 135 | 117 | 115 | 112 | 88 | 111 |
| Romania | 304 | 287 | 68 | 36 | 39 | 55 | 53 | 84 | 78 | 58 | 80 | 47 | 58 | 47 | 45 |
| Serbia | 609 | 39 | 49 | 32 | 20 | 10 | 13 | 21 | 13 | 11 | 9 | 8 | 18 | ||
| Slovak Republic | 1,804 | 95 | 48 | 33 | 35 | 26 | 23 | 28 | 15 | 23 | 14 | 28 | 15 | 13 | |
| Slovenia | 124 | 29 | 11 | 11 | 23 | 12 | 17 |