What is an S-signature in USPTO correspondence and how is it formatted?

What is an S-signature in USPTO correspondence and how is it formatted?

An S-signature is an electronic signature used in correspondence with the USPTO. According to MPEP 502.02, an S-signature must be formatted as follows:

  • Inserted between forward slash marks: /John Doe/
  • Include the signer’s name
  • For registered practitioners, include their registration number
  • The signer’s name can be printed or typed
  • The signature must comply with 37 CFR 1.4(d)(2)

For example, a proper S-signature for a registered patent attorney might look like this:

/John Q. Attorney, Reg. No. 12345/

This format allows for efficient electronic filing while maintaining the legal weight of a signature.

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Topics: MPEP 500 - Receipt and Handling of Mail and Papers, Patent Law, Patent Procedure
Tags: Electronic Signature, S Signature, Signature Format, USPTO correspondence