[JURIST] The Port Authority or New York and New Jersey [official website], owners and maintainers of the World Trade Center (WTC), argued in an appeal [summary of the case, PDF] on Wednesday before the New York Court of Appeals [official website] that they were not liable for negligence in the 1993 World Trade Center attacks [FBI Backgrounger; BBC Backgrounder]. The Port Authority seeks to overturn the 2008 decision [text] that upheld a 2005 jury verdict [JURIST report] apportioning 68 percent…