under the XML Paper Specification or customers for infringement of any XML Paper Specification Derived Patents (as defined below) on account of any manufacture, use, sale, offer for sale, importation or other disposition or promotion of any XML Paper Specification implementations." The specification itself was released under a royalty-free copyright license, allowing its free distribution.

On September 13, 2011, Monotype Imaging announced it had licensed its XPS-to-PCL 6 and XPS-to-PostScript