What defines the statuses of patent applications under MPEP 100?

The determination of whether patent applications are active, dormant, or expired is essential under MPEP 100 since it outlines the various statuses that a patent application can hold throughout its lifecycle. Active applications are those that are currently being examined or are awaiting examination by the United States Patent and Trademark Office (USPTO). Dormant applications may have had no recent activity, such as responses to office actions or requests for extensions, while expired applications are those whose terms have ended, and the rights have lapsed.

Understanding these statuses is crucial as they directly affect the enforceability and rights provided by a patent. Applicants and practitioners must keep track of these statuses to maintain their patent rights and comply with procedural requirements. This definition aligns specifically with the guidance found in MPEP 100, ensuring that individuals involved in patent prosecution are aware of the current standing of their applications.