Patent trolls and capital structure decisions in high-tech firms *

Under the growing threat of patent trolls, high-tech firms face substantial legal fees, increased cash flow volatility, and greater expected costs of distress. I show that the exposure to patent litigation leads to overly conservative capital structures in high-tech firms. My identification exploits a 2017 U.S. Supreme Court decision limiting the ability of patent trolls to seek favorable venue outside the defendant's incorporating state. Following the decision, firms incorporated in states with strong anti-patent troll laws increased leverage. The effects are driven by high-tech firms, the premier targets of patent trolls. Decreased cash flow volatility, especially in treated firms closer to financial distress, provides a key economic channel for my results.