"EFS-Web for Registered eFilers - Enhanced filing of new patent applications, follow-on submissions, saved submissions, and more.
EFS-Web for Unregistered eFilers - Basic initial filing of new patent applications. Note: Unregistered eFilers are not permitted to file follow-on submissions/fees in EFS-Web. Unregistered eFilers are advised to pay fees online as part of the initial application submission or use an alternative filing method to pay fees, such as including a deposit account authorization with the application papers or mailing the payment using the Priority Mail Express® service of the United States Postal Service (USPS) in accordance with 37 CFR 1.10.
If you have questions about filing via EFS-Web, please contact the Patent Electronic Business Center (EBC) at firstname.lastname@example.org or (866) 217-9197."
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