As of today (March 1, 2013), the LII is discontinuing its search engine for the United States Courts of Appeal. It has proven too difficult for us to maintain given our small staff and the absence of standard approaches across the 13 Circuit Courts of Appeal. We simply can't offer the service at the level of quality that our audience deserves, and are therefore discontinuing it rather than offer subpar results.
We are sorry for any disappointment or inconvenience this may cause.
Our friends at Justia.com provide an excellent cross-cutting search of the Circuit Courts (and other Federal courts) at https://law.justia.com/cases/federal/appellate-courts/.