A docketing standard requiring PDF/A formatting will be implemented in the next year for filing PDF case documents with the Federal Courts. Although it is not currently required, it is suggested that all interested parties begin using the PDF/A format when filing documents through CM/ECF.
PDF/A is an Archival file format which preserves the visual appearance of a document over time, independent of the tools and systems used to create or store the file. PDF/A files are self-contained. All of the information (fonts, characters, etc..) required to display a document the same way every time is embedded in the document. This ensures the document can be reproduced far into the future.