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Currently, the EFS-Web and EFS-Web Contingency filing systems are unavailable. At this time please use an alternative filing method if you need to submit a new application, follow-on submission, or fees. 

For additional system outage details please see Systems update.

For specific questions about how to use 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 email EBC@uspto.gov .