Currently, the EFS-Web Contingency filing system is unavailable.
At this time please use EFS-Web Registered or EFS-Web Unregistered:
- Launch EFS-Web Registered eFiler - for enhanced filing, follow-on processing, saved submissions and more
- Launch EFS-Web Unregistered eFiler - for basic initial filing of new patent applications **Note: Unregistered eFilers are not permitted to file follow-on submissions/fees in EFS-Web. eFilers are advised to pay fees online as part of the initial application submission or use an alternative filing method to pay fees on the same day to avoid a late surcharge.
For additional system outage details please see: eBIZ Alerts
For specific questions about how to use Patent electronic systems to submit or review patent applications and patent documents, please call the Patent Electronic Business Center at 866-217-9197 (toll-free) or e-mail EBC@uspto.gov .