r Pharmaceutical trade organizations and media outlets in the United States regularly point to compulsory licensing-or even its threat-as the mechanism that peer countries use to control the price of prescription drugs.r Our comparative analysis shows that compulsory licensing is not frequently employed in high-income countries outside the United States as a direct response to drug prices. When its use is threatened, a license is rarely issued and even less often does it lead to a price discount. Accordingly, compulsory licensing is unlikely to contribute to price discrepancies between the United States and other developed nations.r In fact, of the 21 compulsory licensing petitions we identified outside the United States, over one-third were made by pharmaceutical companies themselves and only three were threatened by a government authority.Context: Compulsory licensing is a practice whereby national authorities can license a third party to produce a patented product, such as a pharmaceutical drug, effectively enabling the production of a generic before the original patent expires. The policy was designed-and has historically been used-to improve access to essential medicines in low-income countries and during public health crises. Although it was not intended to impact drug prices directly, the threat of compulsory licensing may indeed contribute to lower drug prices in