Electronic Filing System-Web (EFS-Web) Maintenance
The USPTO will perform maintenance on EFS-Web beginning at 8 p.m., Thursday, June 23 and ending at 1 a.m., Friday, June 24 ET.
During the maintenance period, EFS-Web will be unavailable. Please use Patent Center to electronically file patent applications.
Last updated: Thursday, Jun 23, 2022 at 3:36 AM ET
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