Earlier in 2019, the Supreme Court held that in light of a bilateral treaty, the Austrian courts must apply Iranian law in inheritance matters concerning Iranian nationals (OGH | 2 Ob 170/18s). However, provisions of Iranian law that differentiate between heirs on the basis of gender must be treated as violations of the fundamental values of Austrian law and should thus be exempt from application.
To read the entire text: https://www.internationallawoffice.com/Newsletters/Litigation/Austria/OBLIN-Attorneys-at-Law/Iranian-Inheritance-Law-and-Austrian-public-policy