Table 1 Characteristics of the investigated drugs sorted by approval year
From: Patenting and patent challenges in South Korea after introducing a patent linkage system
Approval year | 2012 | 2013 | 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | Total |
|---|---|---|---|---|---|---|---|---|---|
Number of drugs (N) | 68 | 100 | 107 | 112 | 99 | 89 | 36 | 48 | 659 |
Drug type | |||||||||
Chemical | 60 | 90 | 86 | 89 | 90 | 74 | 29 | 37 | 555 |
Biologic | 8 | 10 | 21 | 23 | 9 | 15 | 7 | 11 | 104 |
Statutory exclusivity | |||||||||
No | 28 | 55 | 46 | 48 | 27 | 40 | 5 | 8 | 257 |
Yes | 40 | 45 | 61 | 64 | 72 | 49 | 31 | 40 | 402 |
Manufacturer type | |||||||||
Domestic | 22 | 44 | 27 | 37 | 35 | 39 | 8 | 16 | 228 |
Foreign | 46 | 56 | 80 | 75 | 64 | 50 | 28 | 32 | 431 |
Administration | |||||||||
Oral | 43 | 76 | 71 | 66 | 72 | 59 | 25 | 30 | 442 |
Injection | 16 | 16 | 26 | 30 | 16 | 24 | 8 | 11 | 147 |
Others | 9 | 8 | 10 | 16 | 11 | 6 | 3 | 7 | 70 |
ATC classification | |||||||||
J/L | 19 | 18 | 30 | 40 | 27 | 33 | 14 | 13 | 194 |
A/B/C | 31 | 43 | 36 | 43 | 47 | 35 | 14 | 9 | 258 |
M/N | 6 | 18 | 28 | 15 | 5 | 5 | 3 | 18 | 98 |
Others | 12 | 21 | 13 | 14 | 20 | 16 | 5 | 8 | 109 |