Foreign judgments are not, as a general rule, recognized in Norwegian law unless a basis for recognition is provided in a convention concluded with the country in question; see the Act of 13th August 1915 relating to judicial procedure in civil cases (The Dispute Act) § 167:
By agreement with a foreign state it may be decided that decisions which have been passed by its courts concerning civil claims and which have become res judicata, shall have binding effect also in this Kingdom.
Decisions of foreign courts cannot be recognized, however, in such suits as are mentioned in § 23, item (1), or if the recognition would be contrary to decency or Norwegian invariable rules of law.