UNCITRAL doess not report any case law applications of Art. 22.
The following cases contain mentions of Art. 22:
Germany 3 December 1999 Oberlandesgericht [Appellate Court] München [translation available]
Hungary 10 January 1992 Fovárosi Bíróság [Metropolitan Court] 22A [translation available]
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Institute of International Commercial Law - Last updated August 4, 2006