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What is PTO/SB/123 Form

The Patent Correspondence Address Change Form is a government document used by patent holders to update their correspondence address with the U.S. Patent and Trademark Office.

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PTO/SB/123 Form is needed by:
  • Patentees wishing to update their address.
  • Assignees holding the entire interest in a patent.
  • Attorneys or agents representing patent holders.
  • Businesses managing multiple patents.
  • Individuals applying for patents with outdated address information.

How to fill out the PTO/SB/123 Form

  1. 1.
    Access pdfFiller and log in or create an account if you don't have one.
  2. 2.
    In the search bar, type 'Patent Correspondence Address Change Form' or enter PTO/SB/123 to locate the form.
  3. 3.
    Once the form is open, review the sections that require information, including patent number, application number, and the new address.
  4. 4.
    Gather all necessary information prior to filling out the form. This includes your patent and application numbers.
  5. 5.
    Use the text fields in pdfFiller to enter the required information clearly and accurately.
  6. 6.
    Check the sections that require signatures; ensure that the relevant parties, such as the patentee or authorized agent, review the filled form.
  7. 7.
    Once completed, take a moment to review all inputs for accuracy. Look for any typo or missing information.
  8. 8.
    To finalize the form, select the 'Save' button and choose whether you want to download a copy or directly submit it through the platform.
  9. 9.
    If submitting via mail, print the completed form and send it to the Assistant Commissioner for Patents in Washington, D.C.
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FAQs

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Eligible users include patentees, assignees of record, and attorneys or agents of record who represent the patent holder. All must carefully complete and sign the form.
While there is no strict deadline, it is advisable to submit the form as soon as there is a change in address to ensure timely updates with the U.S. Patent and Trademark Office.
The completed Patent Correspondence Address Change Form can be submitted by mail to the Assistant Commissioner for Patents or electronically through pdfFiller.
No specific supporting documents are required to be submitted with this form; however, having your patent number and application number ready is essential for filling it out correctly.
Common mistakes include providing incorrect patent or application numbers, omitting signatures, or failing to verify the new address. Double-check all sections before submitting.
Processing times can vary but typically take a few weeks. It’s crucial to check back with the U.S. Patent and Trademark Office for updates on your request.
Once submitted, you cannot make changes directly. If errors are found, you will need to submit a new Patent Correspondence Address Change Form correcting the mistakes.
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