lnpatent

(1)

(2)

(3)

(4)

L. distortion

−0.083***

−0.048**

(0.019)

(0.019)

distortion

−0.005***

−0.004***

(0.001)

(0.001)

Firm controls

Y

Y

Firm + Year FE

Y

Y

Y

Y

N

995,568

993,454

1,482,781

1,478,394

R²

−0.005

0.000

0.000

0.002