sundaridevi - 1:33 pm on Apr 24, 2013 (gmt 0)
If there is little risk of confusion, they probably have little chance of claiming the domain. If they have a registered trademark that would help them somewhat.
The greater issue is that Iran is not a signee of GATT (General Agreement on Tarifs and Trade). With respect to copyright, that means that the United States doesn't recognize Iran's intellectual property rights and Iran doesn't have to recognize those of the U.S.