Ex Injuria Jus Non Oritur Law and Legal Definition

Ex injuria jus non oritur is a Latin phrase which means “illegal acts cannot create law.” In other words, a legal right or entitlement cannot arise from an unlawful act or omission.. This is a principle of great importance in international law and suggests that any state which obtains land by non defensive war or such other aggressive action, cannot claim any legal rights to the land unlawfully obtained.