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 | |||||
| Armenia | 8 | 2 | 6 | 19 | 4 | 6 | 2 | 2 | 1 | 3 | 4 | 4 | 7 | 8 | |
| Azerbaijan | 6 | 17 | 12 | 19 | 22 | 16 | 20 | 18 | 16 | ||||||
| Bulgaria | 331 | 709 | 52 | 17 | 21 | 14 | 15 | 16 | 11 | 11 | 23 | 18 | 7 | 7 | 6 |
| Georgia | 186 | 250 | 179 | 260 | 233 | 219 | 187 | 172 | 178 | 157 | 157 | 112 | 134 | 164 | |
| Greece | 466 | 34 | 20 | 16 | 19 | 28 | 19 | 19 | 23 | 40 | 91 | 149 | 238 | 363 | 532 |
| Moldova | 10 | 11 | 11 | 11 | 22 | 29 | 72 | 60 | 64 | 37 | 21 | 15 | 11 | 12 | |
| Romania | 304 | 287 | 68 | 36 | 39 | 55 | 53 | 84 | 78 | 58 | 80 | 47 | 58 | 47 | 45 |
| Russian Federation | 8,960 | 8,609 | 13,778 | 14,919 | 15,510 | 16,149 | 16,236 | 16,248 | 14,792 | 14,106 | 13,031 | 12,174 | 11,225 | 11,408 | |
| Serbia | 609 | 39 | 49 | 32 | 20 | 10 | 13 | 21 | 13 | 11 | 9 | 8 | 18 | ||
| Turkiye | 1,090 | 3,156 | 218 | 177 | 228 | 232 | 269 | 331 | 489 | 618 | 380 | 310 | 217 | 238 | 242 |
| Ukraine | 1,604 | 2,054 | 2,756 | 2,604 | 2,464 | 2,556 | 2,356 | 2,226 | 1,862 | 1,764 | 1,861 | 1,755 | 1,822 | 2,091 |