Trademark Trial and Appeal Board litigation often depends heavily on documents. Emails, sales records, advertisements, website materials, social media posts, invoices, internal communications, and electronically stored information can all become important evidence in a trademark opposition or cancellation proceeding. Once litigation is pending or reasonably anticipated, destroying that information can create a serious procedural problem.

In TTAB proceedings, the issue is generally discussed under the doctrine of spoliation of evidence. Spoliation can occur when relevant evidence is destroyed, materially altered, or simply not preserved when a party had an obligation to keep it. The consequences are not automatic, but they can be significant, particularly when electronically stored information, or ESI, disappears after litigation becomes foreseeable.

For trademark owners and applicants, the practical lesson is straightforward. Evidence preservation should begin early, not after discovery requests arrive.

What Is Spoliation of Evidence in a TTAB Case?

Spoliation generally refers to the destruction or material alteration of evidence, or the failure to preserve material that should have been maintained for use in pending or reasonably foreseeable litigation. The TTAB has expressly reminded litigants that they have a duty to preserve material evidence and avoid its destruction.

That obligation does not mean a company must preserve every document it has ever created. The focus is on information that a party knows, or reasonably should know, may be relevant to the dispute.

In a TTAB opposition involving priority, for example, documents showing early trademark use may become critical. In an abandonment case, records showing continuing sales or plans to resume use may matter. In a likelihood of confusion dispute, advertising materials, customer communications, sales information, and marketplace evidence may become relevant.

Deleting those records after the dispute becomes reasonably foreseeable can expose a party to a spoliation allegation.

When Does the Duty to Preserve Evidence Begin?

One of the most important questions is when the preservation obligation starts.

The duty is not necessarily triggered only when a notice of opposition or petition for cancellation is formally filed. It can arise earlier when litigation is reasonably foreseeable. That determination depends on the circumstances.

A cease and desist exchange, threatened opposition, ongoing trademark dispute, or other clear indication that litigation is likely may be enough to put a party on notice that relevant materials should be preserved.

Once the duty arises, routine deletion policies may need to be suspended for relevant information. Businesses that automatically delete emails after a certain period or regularly overwrite digital records should consider whether those systems could eliminate evidence related to the dispute.

The current TBMP recognizes the importance of electronic discovery in Board proceedings. The Board has also stated that ESI may be discoverable when appropriate, even though TTAB proceedings are generally narrower than federal court litigation.

Emails and Electronic Records Can Be Especially Important

Modern TTAB cases frequently involve electronically stored information. This can include emails, cloud files, text-based business communications, spreadsheets, website records, digital photographs, advertising files, and other electronic records.

Federal Rule of Civil Procedure 37(e), which applies to the loss of ESI, plays an important role in the TTAB’s analysis of electronic spoliation.

The rule generally asks whether electronically stored information should have been preserved in anticipation or conduct of litigation, whether it was lost because reasonable preservation steps were not taken, and whether the information can be restored or replaced through additional discovery.

This last point is particularly important. A deleted email does not necessarily create a serious spoliation issue if an identical copy can be recovered from another custodian, server, backup, or third party.

The practical inquiry is not simply whether something was deleted. The Board may consider what was lost, why it was lost, whether reasonable preservation measures were taken, and whether the missing information can be recovered elsewhere.

What Counts as Reasonable Preservation?

Reasonable preservation will depend on the size of the company, the nature of the dispute, the information involved, and the available technology.

When litigation becomes foreseeable, parties commonly identify individuals who may possess relevant evidence and direct them not to delete potentially responsive materials. This is often referred to as implementing a litigation hold.

The preservation process may also involve suspending automatic email deletion, retaining relevant cloud folders, preserving business records, protecting historical website materials, and making sure employees understand that potentially relevant evidence should not be discarded.

The key word is reasonable. Rule 37(e) does not impose a requirement that every piece of electronic information be preserved indefinitely. Rather, the focus is on whether reasonable steps were taken under the circumstances.

What Happens When Spoliation Is Alleged Before the TTAB?

A party that believes relevant electronic evidence has been destroyed may seek sanctions.

The Board has addressed spoliation through Rule 37(e), particularly where ESI is involved. Before sanctions are appropriate, the analysis generally considers whether the information should have been preserved, whether it was lost, whether the loss resulted from a failure to take reasonable preservation steps, and whether it can be restored or replaced through additional discovery.

The severity of any remedy depends heavily on prejudice and intent.

If the loss of information prejudices the opposing party, the tribunal may impose measures designed to cure that prejudice. More severe sanctions generally require stronger findings, particularly a finding that the party acted with an intent to deprive the opponent of the information’s use in the litigation.

That distinction matters. Accidental deletion and intentional destruction are not treated as equivalent conduct.

Can Spoliation Lead to an Adverse Inference?

Potentially, yes.

One of the most serious consequences of destroying evidence can be an inference that the missing information would have been unfavorable to the party responsible for its destruction. But Rule 37(e) places an important limitation on this type of sanction for ESI.

Measures such as presuming that lost evidence was unfavorable or entering default judgment generally require a finding that the party acted with the intent to deprive another party of the evidence’s use in the litigation.

That is a significantly higher threshold than ordinary negligence.

For businesses involved in a TTAB dispute, however, even a lesser sanction can be damaging. A party may lose the ability to rely on certain testimony or evidence, face limitations in presenting its case, or find that credibility questions become part of the Board’s analysis.

Discovery Sanctions Can Extend Beyond Spoliation

Spoliation is only one part of the TTAB’s broader authority to address discovery misconduct.

Under TBMP Section 527.01 and Trademark Rule 2.120(h), the Board may impose sanctions when a party fails to comply with a Board discovery order. Available remedies may include sanctions authorized under Federal Rule of Civil Procedure 37(b)(2), although the Board does not hold parties in contempt or award expenses in the same manner as a federal district court.

Another important risk involves discovery responses themselves. A party that states it does not possess certain information and then attempts to introduce that same information at trial may, under appropriate circumstances, be prevented from using it. The Board has recognized this type of estoppel sanction as a possible remedy for improper discovery conduct.

The broader lesson is that preservation, discovery responses, and trial evidence are interconnected. Decisions made early in discovery can affect what a party is permitted to rely on much later.

Preservation Should Be Part of TTAB Strategy From the Beginning

Document preservation can seem administrative compared with substantive trademark issues such as priority or likelihood of confusion. In reality, preservation problems can undermine those very claims.

Imagine a party asserting trademark use dating back ten years but discovering during litigation that old invoices, advertisements, emails, and website records were routinely deleted. Even without intentional misconduct, proving historical use may become considerably more difficult.

The safest approach is to identify relevant evidence early and preserve it systematically.

TTAB proceedings are document-driven. A strong trademark argument becomes far more persuasive when the evidence supporting it still exists.

Conclusion: Protect the Evidence That Protects the Brand

When documents are destroyed during a TTAB proceeding, the consequences depend on why the evidence was lost, when the duty to preserve arose, whether the information can be recovered elsewhere, and whether the opposing party suffered prejudice.

Intentional destruction can create particularly serious consequences. Even accidental loss, however, can complicate discovery and weaken a party’s ability to prove its case.

For trademark owners facing an opposition or cancellation, preservation should therefore be treated as part of the litigation strategy from the beginning. Once a dispute appears likely, identifying relevant documents, preserving electronic information, and reviewing routine deletion practices can prevent a manageable trademark dispute from becoming an evidentiary problem.

Cohn Legal, PLLC works with businesses and brand owners on trademark disputes and TTAB proceedings. Because preservation obligations are highly fact specific, parties concerned about missing or destroyed evidence should discuss the issue with experienced trademark attorney as early as possible.