If an application is unintentionally abandoned for over one year, can it be revived?

When an application is unintentionally abandoned for more than one year, revival is indeed possible, but it must meet specific conditions set forth by the United States Patent and Trademark Office (USPTO). The process of reviving an unintentionally abandoned application requires the applicant to file a petition to revive the application.

This petition must demonstrate that the abandonment was unintentional. Additionally, the applicant may need to provide a declaration affirming that the failure to respond was not done willfully or with knowledge that could lead to abandonment. It’s also important to note that revival typically incurs a fee, and applicants must fulfill this requirement along with any other conditions stipulated by the USPTO.

Thus, the acknowledgment that revival can occur "under certain conditions" captures the need for the applicant to take the necessary steps to rectify the abandonment status, which is why this answer is correct.