What Is a Likelihood of Confusion Rejection?

Why Are Trademarks Rejected?

A USPTO examining attorney may refuse registration for several reasons, including:

• The trademark is primarily just a surname;
• The trademark is likely to cause confusion with an existing registered mark or pending application;
• The trademark is merely descriptive of the product;
• The trademark is just a decorative part of how the product looks and not what a consumer would recognize as a trademark; or
• The trademark primarily identifies a geographic area in a way that would lead consumers to believe the product is from that area.

While there are many possible grounds for refusal, a likelihood of confusion rejection is among the most common.

What Is the Likelihood of Confusion Trademark Test?

The USPTO does not rely on a single factor to determine whether consumers are likely to confuse one trademark with another. Instead, it applies a multi-factor test from the case In re E.I. DuPont de Nemours & Co., known as the DuPont factors.

What Are the DuPont Factors for the Trademark Test?

The DuPont test includes 13 factors for determining the likelihood of confusion:

• The similarity of the marks in appearance, sound, meaning, and commercial impression;
• The nature and similarity of the products;
• Whether the products travel through similar trade channels;
• The conditions under which sales are made and who the buyers are;
• The fame of the earlier trademark;
• How many existing marks are similar;
• Evidence of actual confusion between marks;
• The length of time multiple marks have coexisted without confusion;
• The variety of products on which the mark is used;
• Any prior agreements or interactions between the trademark users;
• The extent to which the applicant has a right to exclude others from using the mark;
• The extent of potential confusion; and 
• Any other relevant facts.

In many cases, the similarity of the marks and the similarity of the goods or services receive the most attention.

Does a Likelihood of Confusion Refusal Mean My Trademark Is Dead?

No, a refusal does not automatically mean your trademark application will be denied. Not all Office Actions in the trademark process are final, and many are appealable. The key question is whether there are legal and factual arguments to show that consumers are unlikely to be confused. 

You might be able to overcome a refusal by: 

• Distinguishing the marks, 
• Narrowing the description of your product, or 
• Presenting evidence that shows confusion is unlikely.

A careful legal analysis with the help of a knowledgeable attorney can be crucial.

How Can I Avoid Likelihood of Confusion Issues?

The best time to address concerns about the likelihood of confusion is before submitting a trademark application. This proactive approach can save you time and money. If you have already applied for registration, you may still have options for responding to a refusal.

The following are practical steps to protect yourself.

Understand Your Market and Related Markets

Many business owners focus only on direct competitors when developing a trademark and thinking about the trademark similarity test. The USPTO often looks more broadly.

Products and services need not be identical to be considered related in a likelihood of confusion trademark test. For instance, if you have a mark for an exercise method, the USPTO might look for similar marks in the exercise market and in markets that cover meal plans, supplements, exercise apparel, and workout gear. 

Goods offered through similar trade channels or marketed to similar consumers may create trademark conflicts. Understanding your industry and related industries can help identify potential risks early.

Think About All the Ways Your Trademark Could Be Interpreted

Before selecting a trademark, ask:

• How often are the words in my mark used in the marketplace?
• Regardless of spelling, does my mark sound like existing trademarks?
• Do the words in my mark have similar meanings to other marks?
• Are the words in my mark naturally associated with terms already used in the industry?
• Could consumers connect my mark with a similar word already used by another mark (e.g., your mark uses “bunny,” while a competitor’s mark uses “rabbit”)?
• Do the colors, symbols, logos, or design elements resemble those used by related businesses?

A trademark should be evaluated from the perspective of an ordinary consumer, not just from the perspective of the business owner.

Describe Your Product Thoroughly and Accurately

A detailed and accurate description of goods or services can sometimes help distinguish an application from another mark.

Vague descriptions may make products appear broader and more closely related to existing registrations than they actually are. Carefully drafted descriptions can reduce unnecessary conflicts and provide a clearer picture of the marketplace for your product.

Conduct Your Own Trademark Search

After it receives your application, the USPTO searches existing and pending trademarks to apply the DuPont factors for its trademark test. However, you can do your own search before you even apply. Conducting your own search with a strong understanding of applicable markets and how your mark might be interpreted can help you spot and fix issues before a rejection. 

Respond Quickly to USPTO Communications

If you receive an Office Action, you typically must respond within three months, although applicants may request a three-month extension. Failing to respond on time may result in the application being abandoned. Prompt action preserves options and allows time to develop an effective response strategy.

Trademark law is highly fact-specific, and having legal guidance can make a huge and positive difference.

Protect Your Brand with Misra Trademark Counsel

A likelihood of confusion refusal can be frustrating, but it does not automatically mean your trademark application is over. Many applicants still have options, including revising their application, narrowing goods or services, presenting evidence, or making legal arguments in response to the USPTO’s concerns. 

The trademark attorneys at Misra Trademark Counsel help businesses evaluate those options and develop practical response strategies to overcome a trademark similarity test. 

Contact Misra Trademark Counsel to discuss your trademark refusal and possible next steps. 

Frequently Asked Questions

What is a Likelihood of Confusion Refusal in a Trademark Application?

A refusal based on the likelihood of confusion can occur when the USPTO believes consumers may mistake your product for another trademark because of similarities.

How Does the USPTO Determine Whether Two Trademarks Are Confusingly Similar?

The USPTO considers many factors, including the similarity of the marks and the goods or services.

Can I Overcome a Likelihood of Confusion Trademark Refusal?

Sometimes. Giving a timely response with convincing arguments to the USPTO might save your mark.

What Is the Difference Between Likelihood of Confusion and Actual Confusion in Trademark Law?

Likelihood of confusion focuses on whether confusion is likely to occur. Actual confusion means consumers have already been confused. When considering the differences between these terms, you should consider how you intend to file for trademark registration. Small businesses can file for registration on an “intent to use” basis and reserve a trademark name before they sell any goods or services if they have a bona fide intent to use the mark in commerce, which means they might have to focus more on avoiding a likelihood of confusion. Businesses may also file for registration based on an existing use of the mark in commerce, meaning they might have to focus on avoiding a likelihood of confusion and actual confusion. 

How Long Do I Have to Respond to a Likelihood of Confusion Office Action?

You typically have three months, and you can sometimes ask for an extension.

Legal References Used to Inform This Page

To ensure the accuracy and clarity of this page, we referenced official legal and other resources during the content development process:

• USPTO, “Possible Grounds for Refusal of Mark.”
• Thomas A. Reichert, Doctrine, Data, and the Death of DuPont, 36 Fordham Intell. Prop. Media & Ent. L.J. 682-683 (2026).
• Likelihood of confusion, Trademark Manual of Examining Procedure §§ 1207-1207.04(g)(i) (May 2026).
• USPTO, “About Trademark Infringement.”
• USPTO, “Responding to office actions.”