When must a reinstatement request be filed after receiving a notice of cancellation?

The correct answer is two months, as a reinstatement request must be filed within this timeframe after receiving a notice of cancellation. The Trademark Office provides this specific period to ensure that trademark owners have an opportunity to respond to the cancellation and take necessary actions to protect their trademark rights. This timeframe is structured to balance the interests of maintaining proper records and providing trademark owners a reasonable opportunity to address potential issues affecting their registrations.

The other provided options imply different timeframes that do not align with the rules outlined by the Trademark Office regarding reinstatement requests. It's crucial for applicants and registrants to be aware of this two-month window to prevent any negative repercussions on their trademark registrations. Understanding these deadlines is essential in trademark practice, as missing them can lead to the permanent loss of rights.