If a Notice of Abandonment is not received, within what time frame must a petition be filed?

The correct answer is that a petition must be filed within two months of knowledge of abandonment, but no later than six months after the abandonment. This time frame is established to encourage timely action by the trademark owner when they suspect that their application or registration is at risk of being abandoned.

The two-month period allows the owner a reasonable time to gather the necessary information and prepare their petition. The six-month limit provides a clear deadline to ensure that issues of abandonment are addressed efficiently and do not remain unresolved indefinitely. Recognizing the abandonment promptly and acting within this time frame is crucial for maintaining the trademark rights.

In the context of the other choices, the options that provide three months instead of two for the knowledge period, as well as those that refer to time after the registration date, would not accurately capture the established procedural requirements. The emphasis on the knowledge of abandonment is vital since trademark owners may sometimes receive no official notice but are aware of the status change, thereby necessitating a formal petition within the specified time frame.