A new report entitled Sealed Cases in Federal Courts (2009) has been issued by the U.S. Federal Judicial Center. The authors are Tim Reagan and George Cort. Here is the abstract:
“An analysis of all cases filed in federal district courts, bankruptcy courts, and courts of appeals in 2006 revealed that 0.2% of civil cases, 1.6% of criminal cases, 16% of magistrate judge cases, 34% of miscellaneous cases, and 0.1% of appeals were sealed approximately two years after filing. Cases filed in bankruptcy courts are virtually never sealed. This report, prepared for a sealed case subcommittee of the Judicial Conference‘s standing Committee on Rules of Practice and Procedure, describes why and how cases were sealed.”
Note that the report covers only cases filed in 2006.