In a decision dated June 30, 2026 (Case No. 6 Ob 100/25m), the Austrian Supreme Court (Oberster Gerichtshof) cited the scholarship of Franco Ferrari, the Clarence D. Ashley Professor of Law and Director of the Intesa Sanpaolo Center for Transnational Litigation, Arbitration, and Commercial Law, in addressing an important question concerning the relationship between the United Nations Convention on Contracts for the International Sale of Goods (CISG) and domestic contract law.
The case concerned a dispute arising from an international contract for the supply of a mobile telescopic grandstand system. The central legal question was whether a buyer could invoke domestic rules on mistake concerning the characteristics of the goods to challenge the validity of a contract governed by the CISG, thereby circumventing the Convention’s own remedies for non-conforming goods.
In resolving this question, the Supreme Court referred to Professor Ferrari’s article, The Interaction between the United Nations Convention on Contracts for the International Sale of Goods and Domestic Remedies (2007) 71 RabelsZ 52, as well as his commentary on Article 4 CISG in the eighth edition of a German language commentary on the Convention published in 2025.
The Court concluded that domestic rules allowing a contract to be challenged on grounds of mistake cannot be invoked alongside the CISG’s remedies where the alleged mistake concerns the contractually agreed characteristics of the goods. In reaching this conclusion, the Court expressly referred to Professor Ferrari’s analysis of the functional equivalence between the Convention’s remedies and domestic remedies based on mistake. It also endorsed the approach previously adopted by the Swiss Federal Supreme Court, which also cited to Professor Ferrari’s work.
The decision is particularly significant for its emphasis on the CISG’s uniform application and its resistance to the use of domestic law to circumvent the Convention’s carefully calibrated system of remedies. It illustrates the continuing importance of defining the boundaries between uniform international sales law and domestic legal rules.