When the KorUS FTA was negotiated from 2006, the Korean Supreme Court delivered its opinion against ISDS to the Korean government twice in 2006 and 2007. Ridiculously, the opinion of 2006 was disappeared for unknown reason. Here is the opinion of 2007. English translation was made by the Korea National Assembly in May 2012 upon request of the lawmaker Joosun Park (currently the Deputy-Speaker). Original Korean text is found here, and PDF file of the official English translation is here.