Submit a takedown notice
If you believe your copyrighted work was used on a Unity website without authorization, you may submit an infringement notice by filling out this form. Unity will also accept copyright infringement notices that follow the DMCA guidelines (see https://unity3d.com/legal/copyright-policy) and are submitted by email to copyright@unity3d.com.
These requests should only be submitted by the copyright owner or an agent authorized to act on the owner's behalf.