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Table 3 Characteristics of manufacturers

From: Patent challenges and factors associated with successful patent challengers under the patent linkage system: recent evidence from South Korea after the Korea United States free trade agreement

 

Non

challengers

Challengers

p-value

Passive

challengers

Aggressive challengers

p-value

 

94

77

 

58

19

 

Innovative

  No

85

57

0.0083

46

11

0.1221

  Yes

9

20

 

12

8

 

New drug

  No

85

44

< 0.0001

36

8

0.2080

  Yes

9

33

 

22

11

 

Sales

87,321

(175,878)

213,598

(271,251)

0.0005

183,181

(263,621)

306,449

(280,190)

0.0856

Employees

239

(339)

515

(510)

< 0.0001

433

(436)

765

(637)

0.0448

Reimbursed drugs

73

(76.7)

189

(69.4)

< 0.0001

170

(56.9)

248

(72.3)

< 0.0001