How do I request a Certificate of Correction for an Office Mistake?

To request a Certificate of Correction for an Office Mistake, follow these steps:

• Use the official form PTO/SB/44 (also known as PTO-1050) to submit your request.
• Identify the location of the error in the printed patent by column and line number or claim and line number.
• Submit the request via the USPTO patent electronic filing system using the document description: “Request for Certificate of Correction.”
• Alternatively, mail the request to:
  Commissioner for Patents
  Office of Data Management
  Attention: Certificates of Correction Branch
  P.O. Box 1450
  Alexandria, VA 22313-1450

As stated in MPEP 1480, “It is strongly advised that the text of the correction requested be submitted on a certificate of correction form, PTO/SB/44 (also referred to as PTO-1050).” For more details on preparing and submitting the request, refer to MPEP § 1485.

To learn more:

• Certificate of Correction
• Office Mistake
• Patent Correction
• USPTO Errors
• PTO/SB/44
• PTO-1050