One underexplored factor directly affecting firms' use of trademarks relates to the fees associated with obtaining a mark. This paper provides econometric estimates of the fee elasticity of demand for trademark applications. Using a panel of monthly international trademark applications, I find that a 10-percent increase in fees leads to a 2.5-4.0-percent decrease in applications. The econometric analysis also highlights that trademark filings react strongly to economic activity. The results bear implications for literature on the value of trademarks and for the use of trademarks as innovation indicator. Specifically, low elasticity estimates suggest that trademarks provide significant economic value to their owners relative to their costs. However, one must exercise caution when comparing trademark numbers across countries to the extent that fees might differ substantially.