Can a registered practitioner sign a patent term extension application on behalf of the patent owner?

Yes, a registered practitioner can sign a patent term extension application on behalf of the patent owner. According to 37 CFR 1.730(b)(2):

“If the application is submitted by the patent owner, the application must be signed either by: … (2) A registered practitioner on behalf of the patent owner.”

However, the USPTO may require proof that the practitioner is authorized to act on behalf of the patent owner. It’s advisable to have a power of attorney on file if the registered practitioner is not already of record in the patent.

To learn more:

• patent term extension
• registered practitioner
• signature requirements
• power of attorney