The moral acceptability of intellectual property rights is often assessed by comparing them to central instances of rights to material property. Critics of intellectual ownership claim to have found significant differences. One of the dissimilarities pertains to the extent of the control intellectual property rights bestow on their holders over the material property of others. The main idea of the criticism of intellectual ownership built around that dissimilarity is that, in light of the comparison with material property rights, the power (...) is excessive. In this article, I assess this objection to intellectual property rights in connection with patents and copyrights. I maintain that it is implausible. (shrink)