7 Mistakes In A Cease And Desist Trademark Infringement Letter

Executive Summary

A cease and desist trademark infringement letter should:

• Confirm that your trademark rights support the claim.
• Clearly identify the conduct you believe is infringing.
• Include evidence supporting the specific allegations.
• Distinguish unauthorized activity from actual infringement.
• Make specific, supportable demands.
• Set a clear response deadline.
• Fit into a broader enforcement process if the conduct continues.

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A cease-and-desist trademark infringement letter can effectively address suspected trademark misuse before a dispute requires further action. But sending a letter alone is not enough.

Trademark activity continues to grow as businesses build and expand their brands. As more brands establish trademark rights, disputes over how those marks are used can arise across websites, marketplaces, advertising channels, and other online platforms. A poorly prepared cease-and-desist trademark infringement letter may create unnecessary disputes or fail to address the underlying problem.

The letter’s strength depends on what you can establish about the conduct, the trademark rights involved, and the evidence supporting your position. That makes it important to treat the letter as part of a broader enforcement process, not as a standalone notice.

7 Mistakes That Can Weaken Your Trademark Infringement Letter

The following mistakes can make a trademark enforcement effort less precise, less effective, or harder to escalate if the conduct continues.

1. Failing To Verify Your Trademark Rights

A cease and desist letter should start with a clear understanding of the rights you are relying on.

Review who owns the mark, when and where it has been used, the goods or services involved, and any registration records. Registration can strengthen your position, but trademark rights may also arise from use without federal registration.

Trademark ownership does not mean every use of the mark by another party is automatically infringing. Assess how the mark is being used and whether that use supports an infringement claim.

Your first question should therefore be: What trademark rights do we have, and how do those rights relate to the conduct we are challenging? 

Confirming this information before sending the letter helps keep the allegations grounded in rights you can actually establish.

2. Treating Unauthorized Sales As Infringement

An unauthorized seller is not automatically a trademark infringer.

A seller may offer genuine products outside a brand’s approved distribution network. That situation is different from selling counterfeit products, misusing a trademark, or falsely suggesting an affiliation with the brand.

This is where the first sale doctrine comes in. Once a brand or its authorized distributor sells a genuine product, the buyer can generally resell it without infringing the trademark. That protection has limits. Courts have found infringement when the resold goods are materially different from what the brand sells, such as products with missing warranties, altered packaging, or items made for another market. Courts have also found infringement when the reseller’s handling escapes the brand’s legitimate quality control standards. Whether an exception applies depends on the facts, so document the differences before you allege infringement.

Before sending a cease-and-desist trademark infringement letter, determine what is actually happening.

Is the product counterfeit? Is the trademark being used improperly? Is the seller making a misleading claim about its relationship with your business? Is the issue instead related to marketplace policy, distribution, or another commercial concern?

The enforcement route should match the conduct you can support with evidence.

3. Sending The Letter Without Evidence

A letter’s strength depends on the facts and evidence behind its allegations. Online activity can change quickly. A seller can remove a listing, change a product page, alter a website, or move activity to another account.

Preserve relevant evidence before sending the letter where appropriate. Depending on the situation, that may include:

• Listing URLs and product identifiers
• Seller or storefront information
• Screenshots and dates
• Product and packaging details
• Images showing trademark use
• Pricing information
• Purchase or test-purchase evidence
• Previous communications or reports

The evidence should support the specific conduct described in the letter. If you are alleging counterfeit products, document the facts supporting that conclusion. If the concern involves misleading trademark use, preserve evidence showing how the mark is being presented. 

4. Making Broad Or Unsupported Claims

A cease and desist letter should clearly communicate the seriousness of the issue, but it should not go beyond what the evidence supports.

Avoid making unsupported statements about infringement, damages, intent, or potential consequences.

Do not call a seller a counterfeiter solely because it lacks your approval. Also consider whether sending the letter could prompt the recipient to seek a court ruling that its conduct does not infringe your rights.

Make the letter precise. A well-supported claim gives the recipient a clear understanding of the conduct at issue and creates a stronger record if further enforcement becomes necessary. 

5. Making Vague Enforcement Demands

The recipient should understand what you want them to stop, remove, or change. 

A broad demand to “cease all infringement” may not provide enough practical direction, particularly when the dispute involves specific marketplace listings, websites, advertisements, or product uses.

Depending on the circumstances, a letter may address:

• Specific trademark uses
• Identified marketplace listings
• Counterfeit products
• Misleading affiliation claims
• Website or advertising content
• Other documented uses of protected branding

Your demands should correspond to the conduct you have identified. Specific requests also make it easier to determine later whether the recipient complied.

6. Failing To Set A Clear Deadline

A cease and desist letter should state what the recipient must do and when you expect a response.

A clear deadline can help create structure around the enforcement process. It also gives the brand a point at which to review whether the requested action occurred. The appropriate timeframe depends on the circumstances and the nature of the conduct.

The letter should also make clear what happens next if the recipient does not respond or the conduct continues. That does not necessarily mean threatening every possible legal remedy. Instead, the letter should accurately communicate that continued conduct may lead to further enforcement action. 

7. Treating The Letter As The End Of Enforcement

Sending a cease-and-desist trademark infringement letter does not necessarily resolve the underlying problem.

A seller may create another account. A product may reappear under another listing. A website may continue using the trademark after removing one page. Related activity may also appear on another marketplace.

That is why enforcement should continue after you send the letter. Monitor whether:

• The identified conduct has stopped
• The relevant listing or content was removed 
• The recipient responded
• Similar activity has appeared elsewhere
• A related seller or storefront has become active 
• The original conduct has returned

Continued monitoring can reveal patterns that are difficult to identify from a single incident.

Build a Stronger Approach to Trademark Protection

A cease-and-desist trademark infringement letter can be an important enforcement tool, but it should not operate in isolation. Before sending one, verify your rights, identify the specific conduct, preserve evidence, distinguish unauthorized activity from infringement, and make demands that match the documented issue.

If the conduct continues after the letter, ongoing monitoring and escalation can help you identify repeat activity and determine the appropriate next step.

BELU™ Brand Enforcement from ESQgo® helps brands address recurring marketplace risks through monitoring, evidence-backed enforcement, reinforcement, and escalation. 

Talk To A Brand Enforcement Attorney 

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Frequently Asked Questions