MPEP 400 – Representative of Inventor or Owner

An applicant for a patent can submit and prosecute the application pro se (on his own) or he can be represented by a registered attorney or agent. One can appoint a practitioner through executing a power of attorney or authorization of agent, having the practitioner appear in person before the USPTO or by having the practitioner sign a paper on their behalf before the USPTO. The USPTO only recognizes individuals (attorney or agents) and not law firms.

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