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Japanese Patent FAQs
Power of Attorney
Update 2021.6.16Q.When is it necessary for the applicant to file a power of attorney?
The Japanese Patent Office no longer requires a power of attorney for filing a regular patent application including entry into the Japanese national phase of a PCT application. A power of attorney is required only when special representation becomes necessary, such as when an appeal is to be filed or a change of ownership is to be recorded.
However, please note that we may occasionally require a power of attorney, especially from a new client.
Q.Is a scanned copy of a Power of Attorney acceptable?
No. A scanned copy of a Power of Attorney is not sufficient. That is, a scan of a handwritten signature will be rejected.
However, the JPO currently accepts an e-signature (i.e., /name/) for Power of Attorney documents. The name of the signatory must be typed using the format of “/name/.” Additionally, as part of COVID-19 relief measures, even a Power of Attorney with no electronic signature (blank signature lines) is currently being accepted.
For registering a law firm as your representative, an e-signed Power of Attorney should be sufficient for both a pending application and an issued patent (as of December 28, 2020).
For recordation of change of ownership, an e-signed Power of Attorney should be sufficient for both a pending application and an issued patent (as of June 12, 2021).
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