Electronic Filing System-Web (EFS-WEB) Maintenance
The OCIO will perform maintenance on EFS-Web beginning at 8 p.m., Sunday, January 16 and ending at 10 p.m., Sunday, January 16 ET.
During this maintenance period, Fee Worksheets and Acknowledgement Receipts for submissions will not be generated. There will be a delay before these documents will be available.
If you have questions, please contact the Patent Electronic Business Center (EBC) at (866) - 217-9197 during their operating hours of 6 a.m., to midnight, Monday - Friday ET, or email ebc@uspto.gov.
Last updated: Wednesday, Jan 12, 2022 at 2:42 AM ET
chevron_left
View past planned events
chevron_right
View current events chevron_right