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500 Receipt and Handling of Mail and Papers
500 Receipt and Handling of Mail and Papers
501 Filing Papers With the U.S. Patent and Trademark Office [R-5]
502 Depositing Correspondence [R-5]
502.01 Correspondence Transmitted by Facsimile [R-5]
502.02 Correspondence Signature Requirements [R-5]
502.03 Communications via the Internet
502.04 Duplicate Copies of Correspondence
503 Application Number and Filing Receipt [R-3]
504 Assignment of Application for Examination
505 "Office Date" Stamp of Receipt [R-3]
506 Completeness of Original Application [R-5]
506.02 Review of Refusal To Accord Filing Date [R-3]
507 Drawing Review in the Office of Initial Patent Examination [R-3]
508 Distribution
508.01 Papers Sent to Wrong Technology Center (TC)
508.02 Papers Received After Patenting or Abandonment
508.03 Unmatched Papers
508.04 Unlocatable Patent or Application Files [R-3]
509 Payment of Fees [R-5]
509.01 Deposit Accounts [R-5]
509.02 Small Entity Status - Definitions [R-3]
509.03 Claiming Small Entity Status [R-3]
510 U.S. Patent and Trademark Office Business Hours [R-3]
511 Postal Service Interruptions and Emergencies [R-3]
512 Certificate of Mailing or Transmission [R-3]
513 Deposit as Express Mail with U.S. Postal Service [R-3]
500 Receipt and Handling of Mail and Papers
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Go to MPEP - Table of Contents
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business system 
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=definition
(glossary)