Table 2 Number of patents listed on the Registration Platform per drug sorted by registration year

Number of drugs (N)

256

204

97

75

632

 Mean

2.21

1.55

1.48

1.64

1.82

 Standard deviation

1.74

1.05

0.79

1.27

1.40

Drug approval time

 In registration year

1.83

1.68

1.7

1.6

1.69

 Prior to registration year

2.14

1.51

1.21

1.69

1.87

MAH type

 Foreign

2.29

1.54

1.74

1.85

2

 Domestic

1.6

1.56

1.21

1.53

1.61

Administration

 Oral

2.26

1.58

1.54

1.61

1.9

 Injection

1.61

1.53

1.29

1.65

1.51

 Others

2.5

1.42

2

2

1.96