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.

To learn more:

• S-signature
• electronic signature
• USPTO correspondence
• patent practitioner
• signature format