§ 955.9 (Rule 9) Prehearing briefs.
Primary source
Verbatim text below is from the Electronic Code of Federal Regulations (eCFR), a public-domain U.S. government work. Always verify the current version with the eCFR before relying on it for any legal matter.
Full Text
After reviewing the pleadings and appeal file documents, the Board may require the parties to submit prehearing briefs in any case in which a hearing will be held. Either party may also request permission to file a prehearing brief. If the Board grants that request, it will allow the other party to also file a prehearing brief. If prehearing briefs are submitted, they must be filed at least 15 days before the date set for hearing, or as otherwise ordered by the Board.
This is legal information, not legal advice. Laws vary by jurisdiction and change frequently. Always verify current law with official sources and consult a licensed attorney in your jurisdiction for advice on your specific situation.