MPEP § 504 — MPEP § 504
Current through: 2022-07-01

504-Assignment of Application for Examination 
 
 

 
 
 
 
 
 
 
 

 

 
 
 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

 
 
 
 
 

 
 
 
 
 
 
 
 
 
 
 

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 Manual of Patent Examining Procedure 

 Chapter 0500 

 Section 504 
 

 
 
 
 
 
 504 Assignment of Application for Examination [R-07.2022]

 The Patents Service for Time and Application Routing (PSTAR) program
 assigns each nonprovisional application to an examiner. Provisional applications will not
 be examined.
 

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 501-Filing Papers With the U.S. Patent and Trademark Office 

 502-Depositing Correspondence 
 502.01-Correspondence Transmitted by Facsimile 

 502.02-Correspondence Signature Requirements 

 502.03-Communications via Internet Electronic Mail (email) 

 502.04-Duplicate Copies of Correspondence 

 502.05-Correspondence Transmitted by EFS-Web 

 
 

 503-Application Number and Filing Receipt 

 504-Assignment of Application for Examination 

 505-Date of Receipt Stamp 

 506-Completeness of Original Application 
 506.01-[Reserved] 

 506.02-Review of Refusal To Accord Filing Date 

 
 

 507-Drawing Review in the Office of Patent Application Processing 

 508-Distribution 
 508.01-[Reserved] 

 508.02-Papers Received After Patenting or Abandonment 

 508.03-[Reserved] 

 508.04-Unlocatable Patent or Application Files 

 
 

 509-Payment of Fees 
 509.01-Deposit Accounts 

 509.02-Small Entity Status — Definitions 

 509.03-Claiming Small Entity Status 
 509.03(a)-Duty to Investigate Entitlement to Claim Small Entity Status 

 509.03(b)-Change or Correction of Status 

 
 

 509.04-Micro Entity Status — Definitions 
 509.04(a)-Gross Income Basis for Micro Entity Status 

 509.04(b) -Institution of Higher Education Basis for Micro Entity Status 

 509.04(c) -Parties Who Can Sign the Micro Entity Certification 

 509.04(d) -Continued Obligation to Determine Micro Entity Qualification 

 509.04(e) -Notification of Loss of Entitlement to Micro Entity Status 

 509.04(f) -Correcting Errors in Micro Entity Status 

 
 

 
 

 510-U.S. Patent and Trademark Office Business Hours 

 511-Postal Service Interruptions and Emergencies 

 512-Certificate of Mailing or Transmission 

 513-Deposit as Priority Mail Express® with U.S. Postal Service 

 

 

 
 

 
 
 

 
 

 

 
 
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 Last Modified: 
 
 03/09/2026 20:49:43