Which of the following is one of the changes imposed by PLTIA?

The correct answer pertains to the provisions introduced by the PLTIA (Protecting American Innovation Act). One significant change mandated by this legislation is related to the revival of priority applications. Under the PLTIA, priority applications can be revived within a two-month window. This is a crucial procedural mechanism as it provides applicants with the opportunity to correct or address any issues that may have led to their application being dismissed or abandoned inadvertently, thus preserving their rights.

Highlighting the context of this change, it addresses the need for more lenient and accessible processes for applicants who may experience challenges within the filing or continuation of their applications. Given the complexities of patent applications and the various procedural hurdles that may arise, this revision aims to enhance fairness and improve patent prosecution efficiency.

The other options involve more traditional aspects of patent application requirements or definitions that did not change under PLTIA. For instance, securing a filing date still requires at least one claim, and the classification of abandonment remains stringent, not reflecting an unavoidable status. Therefore, the revival provision encapsulated in the correct answer is a unique and impactful element introduced by PLTIA that aligns with the goal of improving the patent application process.