/usr/include/kopete/ui/ is in libkopete-dev 4:15.12.3-0ubuntu1.
This file is owned by root:root, with mode 0o755.
..
/usr/include/kopete/ui/accountselector.h
/usr/include/kopete/ui/addcontactpage.h
/usr/include/kopete/ui/addressbookselectordialog.h
/usr/include/kopete/ui/addressbookselectorwidget.h
/usr/include/kopete/ui/avatardialog.h
/usr/include/kopete/ui/avatarselectorwidget.h
/usr/include/kopete/ui/contactaddednotifydialog.h
/usr/include/kopete/ui/editaccountwidget.h
/usr/include/kopete/ui/kopetecontactaction.h
/usr/include/kopete/ui/kopeteinfodialog.h
/usr/include/kopete/ui/kopetelistview.h
/usr/include/kopete/ui/kopetelistviewitem.h
/usr/include/kopete/ui/kopetelistviewsearchline.h
/usr/include/kopete/ui/kopetepasswordwidget.h
/usr/include/kopete/ui/kopetestdaction.h
/usr/include/kopete/ui/kopeteview.h
/usr/include/kopete/ui/kopeteviewplugin.h
/usr/include/kopete/ui/ui_kopeteawaydialogbase.h
/usr/include/kopete/ui/ui_kopetepasswordwidgetbase.h