Because your trademark — such as a name, logo, or slogan — identifies your business’s products or services and sets them apart from others, it represents your brand and the reputation you’ve built around it.
When someone uses a mark (another term for trademark) similar enough to yours that it’s likely to cause “a likelihood of confusion” among consumers, that’s trademark infringement, and it can damage your business and credibility. Understanding how infringement works and what you can do to stop it is essential to protecting your brand.
Likelihood of Confusion Explained
Likelihood of confusion is the key factor in any infringement claim. Under the federal Lanham Act of 1946, trademark owners have the right to prevent others from using marks that could mislead consumers into thinking two brands are related or endorsed by one another.
Examples of infringing activity include using a confusingly similar business name or logo, selling counterfeit or lookalike products, or registering a domain name that mimics an existing brand. Even if no one has actually been confused, a likelihood of confusion can still be enough to prove infringement.
Learn more about likelihood of confusion in trademark infringement.
How Infringement Happens
Trademark conflicts can occur in either direction; someone else might infringe on your rights, or you might unknowingly infringe on theirs. In many cases, the confusion isn’t intentional, but the impact can still be serious.
When Others Infringe on You
Infringement can happen when another business:
- Expands into your market using a name or logo that’s similar to yours
- Launches products or services with branding that closely resembles your own
- Uses your reputation or goodwill to attract customers through imitation or misleading advertising
Because brand information spreads so quickly online, these issues can be noticed — and cause harm — almost instantly.
When You Might Infringe on Others
Trademark infringement can also occur in reverse. You might unintentionally infringe if you:
- Choose a business or product name without first checking whether similar trademarks already exist
- Expand your business into a new region where another company already owns rights to a similar mark
- Use a logo, slogan, or design element that resembles another registered brand
Being proactive about trademarks—by researching before you launch and seeking professional guidance when needed—can help you avoid conflicts altogether.
Ways You Can Protect Your Business
The best protection against infringement is prevention. A trademark attorney can help you create a strong, distinctive trademark that’s legally protectable, conduct clearance searches before applying to avoid conflicts with existing marks, register your trademark federally through the United States Patent and Trademark Office (USPTO) for nationwide rights, and monitor your mark after registration to identify potential infringements early.
If Someone Infringes on Your Trademark
If you believe another party is infringing on your mark, it’s important to act quickly. Depending on the situation, your attorney may send a cease-and-desist letter requesting that the infringer stop using the mark, file a lawsuit in federal court to prevent further use and recover damages, or seek a settlement or licensing agreement when appropriate.
Taking legal action not only stops the immediate harm but also helps preserve the strength of your trademark over time.
If You’re Accused of Infringement
If you’ve been accused of trademark infringement, don’t ignore it. A knowledgeable attorney can help you evaluate whether infringement actually exists, develop defenses such as fair use or prior use, and negotiate settlements or coexistence agreements to avoid lengthy litigation.
With the right legal approach, many trademark disputes can be resolved before they escalate.
The Role of a Trademark Attorney
Trademark attorneys handle every stage of brand protection, from selecting and registering your mark to enforcing it against infringement. They can also represent you in USPTO proceedings or federal court actions if needed.
At Larson & Larson, our attorneys have decades of experience helping individuals and businesses secure, defend, and maintain their trademarks. Contact us to take the next step in protecting your brand.
Published by Larson & Larson, a Florida-based intellectual property law firm serving clients since 1987.







