Introduction: Timing Can Be Just as Important as Substance
In TTAB proceedings, strong evidence alone is not enough. Timing plays a critical role in whether that evidence is even considered. One of the most common and costly mistakes in trademark oppositions and cancellations involves untimely filed evidence. Parties often assume that if a document is relevant, the Board will review it. In reality, the TTAB enforces strict procedural rules, and failure to follow them can result in key evidence being excluded entirely.
Motions to strike become the battleground where these procedural issues are resolved. Understanding how the TTAB treats untimely filed evidence is essential for anyone involved in trademark litigation. It is not just about building a strong case. It is about making sure that case is properly before the Board.
Your brand is everything. Protecting it requires attention not only to substance, but also to the procedural framework that governs how your evidence is presented.
The TTAB’s Strict Approach to Evidence Deadlines
The TTAB operates under a structured schedule that includes clearly defined testimony periods and deadlines for submitting evidence. Once a party’s testimony period closes, the opportunity to introduce new evidence generally ends. This rule is fundamental to maintaining fairness and efficiency in Board proceedings.
When evidence is filed after the appropriate deadline, it is considered untimely. The Board does not automatically accept such submissions, even if they are highly relevant. Instead, the opposing party may file a motion to strike, asking the TTAB to exclude the late evidence from the record.
This strict approach reflects a broader principle within the TBMP. The integrity of the trial process depends on both sides having a fair opportunity to respond. Allowing late evidence without consequence would undermine that balance.
What Qualifies as Untimely Filed Evidence
Untimely filed evidence can take many forms. It may include documents submitted after the close of a testimony period, exhibits attached to briefs that were never properly introduced during trial, or materials filed without the required procedural steps such as notices of reliance or testimony declarations.
One of the most frequent errors occurs during final briefing. Parties sometimes attach new documents to their briefs, believing they are strengthening their argument. The TTAB consistently rejects this approach. Briefs are for argument, not for introducing evidence. Any materials that were not properly made part of the record during trial are typically disregarded.
Another common issue arises when parties attempt to rely on discovery materials without properly submitting them into evidence. Simply producing documents during discovery does not make them part of the trial record. They must be formally introduced in accordance with TBMP procedures.
Motions to Strike: The Mechanism for Enforcing Compliance
Motions to strike serve as the primary tool for addressing untimely filed evidence. When a party believes that its opponent has introduced evidence outside the permitted timeframe or in an improper manner, it may file a motion asking the Board to exclude that evidence.
The TTAB evaluates these motions carefully, focusing on whether the evidence was submitted in compliance with the applicable rules. If the Board determines that the evidence is untimely or procedurally defective, it will generally grant the motion and exclude the material from consideration.
However, not all procedural errors are treated equally. In some cases, the Board may consider whether the opposing party has been prejudiced by the late submission. If there is no prejudice and the error is minor, the TTAB may exercise discretion to allow the evidence. That said, parties should not rely on this outcome. The safer approach is strict compliance.
The Risk of Waiver and Strategic Considerations
An important nuance in TTAB practice is the concept of waiver. If a party fails to timely object to untimely evidence, it may lose the ability to challenge that evidence later. This means that practitioners must remain vigilant throughout the proceeding, monitoring the record and responding promptly to any procedural missteps by the opposing side.
At the same time, filing a motion to strike should be a strategic decision. While it can be an effective way to limit the record, it also requires time and resources. In some cases, it may be more efficient to address the evidentiary issue within the final brief, arguing that the Board should give little or no weight to the improper material.
The decision often depends on the significance of the evidence and its potential impact on the case.
Exceptions and Limited Flexibility
Although the TTAB enforces deadlines strictly, there are limited circumstances where late evidence may be considered. For example, if both parties stipulate to the inclusion of certain materials, the Board may accept them. Similarly, if a party successfully moves to reopen the record, it may be allowed to introduce additional evidence.
These exceptions are narrow and typically require a showing of good cause. The Board does not grant such requests lightly. Parties seeking to rely on late evidence must be prepared to explain why it was not submitted earlier and why its inclusion would not unfairly prejudice the opposing party.
Lessons for Trademark Practitioners and Brand Owners
The treatment of untimely filed evidence offers a clear lesson. Procedural discipline is essential in TTAB proceedings. Even the strongest evidence can become irrelevant if it is not properly introduced.
For brand owners, this underscores the importance of working with experienced trademark counsel who understand the nuances of TTAB practice. From managing deadlines to structuring the evidentiary record, each step requires careful attention.
Your brand is worth everything. Ensuring that your evidence is both compelling and admissible is a key part of protecting it.
Conclusion: Winning at the TTAB Requires Both Substance and Procedure
TTAB proceedings are as much about process as they are about substance. The Board’s treatment of untimely filed evidence and motions to strike reflects a commitment to procedural fairness and consistency. Parties that fail to respect these rules risk losing valuable arguments before they are even considered.
By understanding how the TTAB approaches these issues, practitioners and brand owners can better navigate the complexities of trademark litigation. Careful planning, timely submissions, and strategic decision making can make a meaningful difference in the outcome.
Let’s simplify this IP process together and ensure your case is presented with both strength and precision.

