The Raysan Trademark firm of Iran sends me its newsletter.  Its website reports three recent victories by Western trademark owners.  ARMANI triumphed over ARMAN for shoes.  FABER-CASTELL cancelled a somewhat similar logo for stationery products.  NESTLE appears to have exclusive rights in designs of birds in nests.

By the way, this is not legal advice and you should consult your attorney on this point, but bear in mind that in general, the protection of intellectual property is an exception to prohibtions on trade with certain countries (the laws regarding your particular axis of evil country may vary).