What document must be obtained to officially confirm a trademark has been registered?

The correct answer is that a Trademark Registration Certificate must be obtained to officially confirm that a trademark has been registered. This certificate serves as the formal documentation issued by the United States Patent and Trademark Office (USPTO) that acknowledges the successful registration of a trademark. It includes essential information such as the trademark owner's name, the registered mark, the registration number, and the date of registration.

This document is crucial for legal purposes, as it provides evidence of ownership and the exclusive rights associated with the trademark. It not only serves as proof of registration but also plays an important role in potential enforcement actions against infringers since it establishes the trademark's validity.

The other options mentioned do not serve this function. The Trademark Application is the initial step in seeking trademark protection, but it does not confirm that a trademark is registered. A Trademark Abandonment Form is relevant in situations where a trademark is no longer actively used or protected, while an Application Status Report provides updates on the status of a pending application, rather than confirming registration. Thus, the Trademark Registration Certificate is the definitive document that verifies a trademark's registration status.