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Does Enforcement of Intellectual Property Rights Matter in China ...

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percentage <strong>of</strong> IP <strong>in</strong>fr<strong>in</strong>gement cases won by the pla<strong>in</strong>tiffs) on the probability that a high tech<br />

company has access to new debt. Column 1 <strong>of</strong> Table 2 shows that IP rights enforcement<br />

significantly <strong>in</strong>creases the probability <strong>of</strong> a firm hav<strong>in</strong>g access to new debt. Mov<strong>in</strong>g from the lowest<br />

IPP1 prov<strong>in</strong>ce to the highest IPP1 prov<strong>in</strong>ce <strong>in</strong>creases the probability <strong>of</strong> a high tech firm obta<strong>in</strong><strong>in</strong>g<br />

new debt by 7.9%, hold<strong>in</strong>g all other <strong>in</strong>dependent variables at their mean values. When other<br />

prov<strong>in</strong>cial characteristics are <strong>in</strong>cluded <strong>in</strong> the regression (Column 2), the probability <strong>in</strong>creases by<br />

6.8%. All the firm-level control variables have the expected signs: hav<strong>in</strong>g patents, higher R&D<br />

<strong>in</strong>tensity, larger sales growth, and higher pr<strong>of</strong>itability (ROA) <strong>in</strong>crease the probability <strong>of</strong> a firm<br />

obta<strong>in</strong><strong>in</strong>g new debt, while <strong>in</strong>tangible to total assets ratio, leverage, and firm age have the opposite<br />

effect. Column 4 and 5 report the results from the probit analysis when IPP2 is used to measure IP<br />

enforcement. IPP2 has a significant and positive impact on the probability <strong>of</strong> acquir<strong>in</strong>g new debt by<br />

firms.<br />

We are concerned that the observed impact <strong>of</strong> IP rights enforcement on access to external debt<br />

might be driven by omitted variables, or the f<strong>in</strong>anc<strong>in</strong>g may <strong>in</strong>crease the demand <strong>of</strong> IP rights<br />

enforcement. To address the endogeneity problem, we employ the <strong>in</strong>strumental variable (IV)<br />

approach <strong>in</strong> a two-stage least square (2SLS) framework. A valid <strong>in</strong>strumental for IP rights<br />

enforcement needs to satisfy two conditions: it is correlated with the IP rights enforcement measures<br />

(the validity requirement), but it needs to be uncorrelated with the residual <strong>in</strong> the regression <strong>of</strong><br />

access to external debt (the exclusion restriction).<br />

In choos<strong>in</strong>g suitable <strong>in</strong>struments for IP rights enforcement, we go back <strong>in</strong> history to search for<br />

the orig<strong>in</strong> <strong>of</strong> the notions <strong>of</strong> IP protection. One variable that is related to the respect for <strong>in</strong>tellectual<br />

properties is whether a prov<strong>in</strong>ce had a British concession, which lasted from the late Q<strong>in</strong>g dynasty to<br />

22

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