How should USPTO employees verify the identity of email senders in patent communications?

USPTO employees are required to verify the identity of email senders in patent communications to prevent misrepresentation or spoofing. According to MPEP 502.03: ‘Email must be initiated by a registered practitioner, or an applicant in a pro se application, and sufficient information must be provided to show representative capacity in compliance with 37 CFR 1.34.’…

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