| 
 | (1) | (2) | (3) | 
| lnpatent | lnpatent | lnpatent | |
| Fin | −0.812*** | −0.711*** | −0.752*** | 
| (−6.85) | (−6.21) | (−6.32) | |
| MI | 
 | 0.610*** | 
 | 
| 
 | (34.84) | 
 | |
| interactMI | 
 | −0.354*** | 
 | 
| 
 | (−4.20) | 
 | |
| EI | 
 | 
 | −0.526*** | 
| 
 | 
 | (−11.40) | |
| interactEI | 
 | 
 | 0.552** | 
| 
 | 
 | (2.27) | |
| ROA | 0.567*** | −0.535*** | 0.712*** | 
| (4.06) | (−3.75) | (5.05) | |
| Growth | 0.057*** | 0.090*** | 0.061*** | 
| (2.86) | (4.60) | (3.04) | |
| Board | 0.858*** | 0.625*** | 0.746*** | 
| (13.55) | (10.39) | (11.68) | |
| Share | 0.100 | 0.149** | 0.032 | 
| (1.39) | (2.16) | (0.45) | |
| OGR | −0.124*** | −0.103*** | −0.115*** | 
| (−8.47) | (−7.18) | (−7.79) | |
| _cons | −1.823*** | −8.844*** | −1.435*** | 
| (−8.63) | (−31.08) | (−6.68) | |
| N | 18096 | 18096 | 18096 | 
| r2 | 0.170 | 0.237 | 0.175 | 
| Ind | Yes | Yes | Yes | 
| Year | Yes | Yes | Yes |