37 CFR §220.4
Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗
When the start or end date for calculating any deadline set forth in this subchapter falls on a weekend or a Federal holiday, the start or end date shall be extended to the next Federal workday. Any document subject to a deadline must be either submitted to the Board's electronic filing system (eCCB) by 11:59 p.m. Eastern Time on the date of the deadline or dispatched by the date of the deadline.