Can a third party conduct an interview or take action in a patent application?

Generally, third parties are not permitted to conduct interviews or take actions in patent applications. The MPEP clearly states:

The use of the provisions of 37 CFR 1.34 by a third party or its representative to conduct an interview, or take other action not specifically permitted by the rules of practice in an application for patent, is considered a violation of 37 CFR 11.18 and may result in disciplinary action if done by a practitioner.

This means that only authorized representatives (such as registered attorneys or agents with proper authorization) can conduct interviews or take actions on behalf of the applicant. Third parties attempting to do so may face disciplinary action, especially if they are registered practitioners.

For more information on disciplinary action, visit: disciplinary action.

For more information on patent interviews, visit: patent interviews.