1. What Is Trademark Infringement?
Trademark infringement generally involves unauthorized use of a protected source identifier in commerce in a manner likely to cause confusion, mistake, or deception regarding the source, sponsorship, affiliation, or approval of goods or services.
For federally registered trademarks, Section 32 of the Lanham Act provides a cause of action involving qualifying unauthorized use of reproductions, counterfeits, copies, or colorable imitations of registered marks.
Section 43(a) of the Lanham Act can also protect qualifying unregistered trademarks, trade dress, and other source-identifying matter against confusing uses.
Trademark infringement is therefore fundamentally a consumer-confusion inquiry.
The question is not simply:
Are the two trademarks identical?
The more important question is:
Is the accused use likely to cause relevant consumers to believe that the defendant’s goods, services, or business come from, are affiliated with, are sponsored by, or are approved by the trademark owner?
2. Do Two Trademarks Have to Be Identical to Infringe?
No.
Trademark infringement can involve marks that are similar rather than identical.
Similarity may arise through:
Appearance.
Sound.
Meaning.
Commercial impression.
Overall presentation.
Changing one letter, adding a descriptive term, using a similar pronunciation, or incorporating the dominant portion of another trademark does not necessarily eliminate infringement risk.
Similarity alone also does not establish infringement.
The relationship between the goods or services matters.
Two highly similar marks used for directly competing products can present a very different legal issue from identical wording used in unrelated commercial settings.
Trademark infringement must therefore be evaluated in context.
3. What Is Likelihood of Confusion?
Likelihood of confusion is the central test in most trademark infringement cases.
A trademark owner generally does not need to prove that every customer was actually confused.
The issue is whether confusion is sufficiently likely under the circumstances.
Potential confusion can involve whether consumers believe:
The defendant’s products come from the trademark owner.
The defendant is affiliated with the trademark owner.
The trademark owner sponsors the defendant.
The parties have a licensing relationship.
The trademark owner approved the defendant’s goods or services.
The businesses are economically connected.
The defendant is an authorized extension of the plaintiff’s brand.
Actual confusion can be important evidence where it exists, but it is generally not required in every case.
Courts evaluate the overall marketplace circumstances.
4. What Factors Determine Trademark Infringement?
Federal courts apply multifactor likelihood-of-confusion tests.
The precise formulation differs among federal appellate circuits, so there is no single nationwide checklist with identical wording or weighting.
Common considerations can include:
Strength or distinctiveness of the plaintiff’s trademark.
Similarity between the marks.
Similarity or relatedness of the goods or services.
Marketing and distribution channels.
Relevant purchasers.
Purchasing conditions.
Evidence of actual confusion.
The defendant’s intent where relevant.
Potential expansion into overlapping markets.
Other marketplace circumstances.
No single factor automatically controls every case.
For example, two marks may look different but sound highly similar.
Two businesses may sell different products, but those products may be closely related enough that consumers could reasonably assume a common source.
Purchaser sophistication can also matter.
An inexpensive consumer purchase can present different confusion considerations from a highly specialized transaction negotiated by experienced business professionals.
Trademark infringement analysis should therefore focus on how the marks actually function in the marketplace.
5. Do You Need a Federal Registration to Sue for Trademark Infringement?
Not necessarily.
Federal registration provides significant advantages, but U.S. trademark rights can also arise through qualifying use in commerce.
Section 43(a) of the Lanham Act can protect qualifying unregistered trademarks and trade dress.
State statutory and common-law trademark claims may also apply depending on the circumstances.
An unregistered trademark owner still must establish enforceable rights.
Questions may include:
When did use begin?
Where has the mark been used?
Does the designation actually function as a trademark?
Is the mark distinctive?
Has a descriptive mark acquired distinctiveness?
What is the geographic scope of the rights?
Who has priority?
Does another party have superior rights?
Federal registration can make several of these issues easier to establish.
Learn About Federal Trademark Registration
6. How Does Federal Registration Strengthen an Infringement Claim?
Registration on the Principal Register provides important enforcement benefits.
Federal registration can provide legal presumptions concerning:
Validity of the trademark.
Ownership of the trademark.
The registrant’s exclusive right to use the mark nationwide for the identified goods or services, subject to applicable limitations and defenses.
Registration can also provide:
Public notice of the owner’s claim.
A federal ownership record.
Constructive notice.
Potential nationwide priority benefits under applicable statutory rules.
Access to certain federal remedies.
The ability to use the ® symbol for registered goods and services.
A basis for recording qualifying registrations with U.S. Customs and Border Protection.
Potential incontestability benefits after applicable statutory requirements are satisfied.
Registration does not mean the owner automatically wins every infringement dispute.
A defendant may still challenge:
Validity.
Ownership.
Priority.
Scope of rights.
Likelihood of confusion.
Geographic limitations.
The applicability of defenses.
A prior user may also possess earlier rights in a particular geographic area.
Registration strengthens enforcement, but infringement remains fact specific.
7. What Evidence Should a Trademark Owner Preserve?
Evidence should be preserved as soon as potentially infringing activity is discovered.
Online content can disappear quickly.
Listings may change.
Social-media accounts may be renamed.
Advertisements may be removed.
Packaging can be redesigned.
Domains can redirect.
A trademark owner should preserve evidence of both:
Its own rights
and
The accused use
Useful materials may include:
Dated screenshots.
Product photographs.
Packaging.
Advertisements.
Marketplace listings.
Website pages.
Social-media profiles.
Domain information.
Invoices.
Purchase receipts.
Examples of actual confusion.
Customer emails.
Misdirected communications.
Reviews referring to the wrong business.
Advertising records.
Historical examples of the trademark owner’s use.
Sales information.
Marketing materials.
Trademark registration records.
License agreements.
Distribution information.
Preservation should capture dates and context rather than isolated images with no record of where or when they were obtained.
Evidence of priority is especially important.
Before enforcement begins, ownership and first-use history should be reviewed carefully rather than assuming registration alone resolves every issue.
8. Should You Send a Trademark Cease-and-Desist Letter?
A cease-and-desist letter can be an effective enforcement tool, but it is not automatically the correct first step in every dispute.
A trademark demand may:
Identify the owner’s rights.
Describe the accused use.
Explain the likelihood-of-confusion concern.
Demand cessation or modification.
Request removal or destruction of infringing materials.
Seek transfer of a domain or social-media account.
Request information concerning sales or distribution.
Propose a phase-out period.
Open settlement discussions.
Reserve litigation rights.
The broader strategy should be considered first.
Relevant questions may include:
Has sufficient evidence been preserved?
Could the accused party have earlier rights?
Is a conflicting USPTO application pending?
Is immediate injunctive relief necessary?
Could an online-platform procedure resolve the issue?
Could contacting the accused user trigger declaratory-judgment litigation?
Would coexistence be commercially acceptable?
Could modification resolve the dispute without complete abandonment?
A cease-and-desist letter is therefore a strategic legal communication, not a mandatory formality.
Learn About Trademark Cease-and-Desist Letters
9. Can a TTAB Proceeding Stop Trademark Infringement?
No.
This distinction is important.
The Trademark Trial and Appeal Board determines federal trademark registration rights.
It does not decide whether a party may continue using a trademark in the marketplace.
The TTAB generally cannot:
Issue an injunction stopping trademark use.
Award trademark infringement damages.
Decide ordinary federal trademark infringement claims.
Award attorney’s fees as infringement damages.
A trademark owner facing both marketplace infringement and a conflicting trademark application may therefore have two separate problems.
Registration Problem
Should the other party obtain or retain a federal trademark registration?
Marketplace Problem
Should the other party be permitted to continue using the mark commercially?
A TTAB opposition or cancellation can address the registration dispute.
A court action may be necessary to obtain an injunction or monetary relief concerning marketplace use.
Learn About TTAB Proceedings
10. When Should You File a Trademark Opposition or Cancellation?
A trademark opposition or cancellation may be appropriate when another party is seeking or already owns a federal registration that conflicts with the trademark owner’s rights.
Trademark Opposition
When an application is approved for publication on the Principal Register, publication ordinarily begins a 30-day opposition period.
During that period, a party that believes it would be damaged by registration may file a Notice of Opposition or request an available extension of time.
Likelihood of confusion is one of the most common grounds for opposition.
Trademark Cancellation
If the conflicting mark is already registered, a petition to cancel may be available.
The available grounds and time limitations depend on matters such as:
The age of the registration.
The legal basis for cancellation.
The particular statutory claim.
An opposition or cancellation can be strategically important even though it does not itself stop marketplace use.
Preventing a competitor from obtaining or retaining a conflicting federal registration can materially affect a larger trademark dispute.
11. When Can a Trademark Owner Seek an Injunction?
A federal court can issue injunctive relief in qualifying trademark cases.
An injunction may potentially prohibit:
Use of the infringing mark.
Sales under the infringing branding.
Advertising.
Website use.
Marketplace listings.
Packaging.
Signage.
Social-media branding.
Other conduct covered by the court’s order.
A trademark owner may seek temporary or preliminary relief where waiting until the end of litigation could cause substantial harm.
Situations may include:
A major product launch.
A seasonal sales period.
A trade show.
A national advertising campaign.
A large marketplace rollout.
Rapidly expanding counterfeit activity.
Federal law also provides a rebuttable presumption concerning irreparable harm in qualifying Lanham Act cases when the required showing for preliminary or permanent injunctive relief has been established.
An injunction is not automatic merely because infringement is alleged.
The trademark owner must satisfy the applicable legal requirements and build an adequate evidentiary record.
12. What Damages Are Available for Trademark Infringement?
The Lanham Act provides several potential forms of monetary relief, subject to statutory requirements and equitable principles.
Depending on the claim, potential recovery may include:
The defendant’s profits.
Damages sustained by the plaintiff.
Costs of the action.
Reasonable attorney’s fees in exceptional cases.
A trademark owner does not automatically receive every form of monetary relief after proving infringement.
Relevant considerations can include:
Causation.
Sales attributable to the accused conduct.
The defendant’s deductible costs.
The plaintiff’s actual losses.
Willfulness.
Other equitable considerations.
The nature of the violation.
The available proof.
Willfulness is not an absolute prerequisite to an award of profits for ordinary Section 43(a) violations, although the defendant’s mental state remains an important consideration in the equitable analysis.
13. What Is Trademark Counterfeiting?
Trademark counterfeiting is a particularly serious form of trademark violation involving qualifying use of a counterfeit mark.
Counterfeiting should not be used as a synonym for every infringement dispute.
A confusingly similar trademark may infringe without qualifying as a counterfeit.
Federal law provides specialized remedies for qualifying counterfeiting.
A trademark owner may elect statutory damages instead of actual damages and profits in appropriate cases.
The statutory range can be:
$1,000 to $200,000 per counterfeit mark per type of goods or services.
For willful counterfeiting, the statutory maximum can reach:
$2,000,000 per counterfeit mark per type of goods or services.
Federal law also provides specialized enhanced remedies for intentional counterfeiting and permits ex parte seizure orders under strict statutory circumstances.
Not every lookalike product qualifies.
For example:
A product bearing a fake reproduction of a registered luxury-brand trademark may present counterfeiting issues.
A product with a different brand but a similar appearance may instead present trademark infringement, trade dress, copyright, or design-patent issues.
The legal claim should match the conduct.
Learn About Online Counterfeit Enforcement
14. What Is Trademark Dilution?
Trademark dilution is different from ordinary trademark infringement.
Ordinary infringement focuses primarily on likelihood of confusion.
Federal dilution law protects qualifying famous trademarks against certain uses that impair distinctiveness or harm reputation even without consumer confusion.
To qualify for federal dilution protection, a mark must be widely recognized by the general consuming public of the United States as a source identifier.
Federal law recognizes two primary forms.
Dilution by Blurring
Blurring occurs when association with another mark impairs the distinctiveness of the famous mark.
Dilution by Tarnishment
Tarnishment occurs when the association harms the reputation of the famous mark.
Unlike ordinary infringement, federal dilution does not require:
Actual confusion.
Likely confusion.
Direct competition.
Actual economic injury.
Federal dilution law also contains exclusions involving certain fair uses, parody, criticism, commentary, news reporting, and noncommercial uses.
Most trademarks do not qualify for federal dilution protection merely because they are important or well known within a niche industry.
15. What Defenses Can Be Raised in a Trademark Infringement Case?
Being accused of infringement does not mean liability has already been established.
Potential defenses and responses may include arguments that:
The plaintiff does not own enforceable trademark rights.
The defendant has priority.
The marks are not sufficiently similar.
The goods or services are unrelated.
Consumer confusion is unlikely.
The asserted wording is descriptive.
The asserted term is generic.
The asserted trade dress is functional.
The defendant is making descriptive fair use.
The use is nominative.
The plaintiff consented.
The defendant has a valid license.
A coexistence agreement applies.
The plaintiff’s rights are geographically limited.
The registration is invalid or subject to cancellation.
Equitable defenses apply.
The disputed use does not function as a trademark.
Another statutory defense applies.
A defense strategy should begin with reviewing the plaintiff’s underlying rights rather than simply comparing the competing names.
16. How Is Online Trademark Infringement Enforced?
Trademark infringement increasingly occurs through digital platforms.
Disputes may involve:
Amazon.
Shopify stores.
E-commerce marketplaces.
Social media.
Paid advertisements.
Search advertising.
Domain names.
Impersonating accounts.
Fake websites.
Mobile applications.
Unauthorized merchandise.
Influencer promotions.
Many online platforms have intellectual property complaint procedures.
These mechanisms can sometimes remove infringing content faster than court litigation.
Platform removal, however, is not the same as a judicial determination of trademark infringement.
Before filing a complaint, a trademark owner should verify:
Ownership of the asserted trademark.
The registration being relied upon.
The exact accused listing or account.
Whether the seller is unauthorized or merely reselling genuine goods.
Whether the use functions as a trademark.
Whether a defense may apply.
Whether the dispute actually concerns trademark infringement, counterfeiting, copyright, trade dress, or another issue.
Online trademark disputes can also involve domain-name law.
A confusing domain name may implicate trademark infringement, the Anticybersquatting Consumer Protection Act, or a UDRP proceeding depending on the circumstances and the remedy sought.
Learn About Cybersquatting & Domain Name Enforcement
17. How Does International Trademark Infringement Work?
Trademark rights are territorial.
A U.S. trademark registration does not automatically create the same rights in every foreign country.
International enforcement may therefore involve:
Foreign national trademark registrations.
Madrid System rights.
Regional trademark rights.
Local unfair-competition law.
Customs procedures.
Marketplace enforcement.
Domain-name proceedings.
Foreign litigation.
Coordination with local counsel.
There are also limits on the international reach of U.S. trademark law.
In Abitron Austria GmbH v. Hetronic International, Inc., the U.S. Supreme Court held that the relevant Lanham Act infringement provisions extend to qualifying domestic use in commerce rather than operating as general worldwide infringement statutes.
A U.S. trademark owner confronting foreign conduct should therefore not assume that a federal U.S. lawsuit automatically reaches all activity occurring abroad.
Foreign rights and foreign enforcement may need to be pursued separately.
Learn About International Trademark Protection
Learn About Worldwide Trademark Portfolio Management
18. What Should You Do If You Are Accused of Trademark Infringement?
A business receiving a trademark demand should take it seriously without assuming every allegation is correct.
Initial steps can include:
Preserve the demand.
Preserve relevant evidence.
Avoid destroying or altering records.
Identify the accused mark and uses.
Determine when the business first used the mark.
Review searches conducted before launch.
Identify pending applications and registrations.
Review sales territories.
Review marketing channels.
Examine licenses and agreements.
Evaluate the claimant’s priority.
Identify any immediate response deadlines.
A trademark attorney can then assess whether the appropriate strategy is to:
Continue use.
Cease use.
Modify the branding.
Negotiate.
Seek a coexistence agreement.
Challenge the claimant’s rights.
Defend against infringement.
Pursue a TTAB proceeding.
Consider declaratory relief where legally and strategically appropriate.
Transition to another brand.
Trademark litigation can be expensive and time consuming.
An early evaluation can therefore be commercially valuable even when the ultimate solution is settlement or rebranding.
19. How Can Cohn Legal Help With Trademark Infringement?
Cohn Legal, PLLC assists entrepreneurs, startups, businesses, and established brand owners with trademark enforcement and defense.
A trademark infringement matter can begin with evaluating:
Ownership.
Priority.
Federal registrations.
Common-law rights.
Trademark strength.
Similarity between competing marks.
Goods and services.
Marketplace conditions.
Actual confusion.
Geographic use.
Online conduct.
Potential defenses.
The client’s commercial objectives.
Cohn Legal can assist with:
Trademark infringement analysis.
Cease-and-desist letters.
Responses to infringement demands.
Settlement negotiations.
Coexistence agreements.
Trademark oppositions.
Trademark cancellations.
TTAB proceedings.
Online marketplace enforcement.
Domain-name disputes.
Counterfeit issues.
Injunctive-relief strategy.
Trademark damages issues.
Trademark litigation strategy.
International enforcement coordination.
Coordination with litigation counsel where appropriate.
The correct enforcement strategy depends on the result the client needs.
If the immediate objective is to prevent a conflicting trademark registration, a TTAB opposition may be appropriate.
If the objective is to stop marketplace use, a cease-and-desist demand or court action may be necessary.
If the dispute involves counterfeiting, online platform remedies and specialized federal counterfeiting remedies may also be relevant.
Trademark enforcement should match the legal tool to the commercial problem.
Discuss a Trademark Infringement Matter
Speak With a Trademark Attorney
FAQ
Trademark Infringement Frequently Asked Questions
What is trademark infringement?
Trademark infringement generally involves unauthorized trademark use that is likely to cause confusion, mistake, or deception concerning source, sponsorship, affiliation, or approval.
Do the trademarks have to be exactly the same?
No.
Confusingly similar marks can potentially infringe even when spelling, design, pronunciation, or other details differ.
Is copying a business name automatically trademark infringement?
No.
The trademark owner must establish protectable rights and the applicable legal requirements, including likelihood of confusion where that is the asserted theory.
Does the accused business have to sell the exact same product?
No.
Goods or services can be sufficiently related that consumers may believe they come from the same or connected sources even when they are not identical.
Do I have to prove actual customer confusion?
Not necessarily.
The ordinary infringement inquiry generally asks whether confusion is likely.
Actual confusion can still be strong evidence.
Does the defendant have to intend to copy the trademark?
No.
Intent is not an absolute requirement for ordinary trademark infringement.
It may still be relevant to the likelihood-of-confusion analysis or remedies.
Do I need a registered trademark before enforcing my rights?
Not necessarily.
Qualifying unregistered trademarks can receive protection under Section 43(a) and other law.
Federal registration nevertheless provides important enforcement advantages.
Does trademark registration automatically prove infringement?
No.
Registration can provide significant presumptions, but the plaintiff still must establish the applicable infringement elements.
What if I used my trademark before the registered owner?
Priority should be investigated carefully.
Earlier common-law use can create important rights or defenses in qualifying circumstances.
Historical proof of use can therefore be critical.
What evidence should I save if someone copies my trademark?
Preserve dated evidence of the accused use and your own earlier use.
Useful materials may include screenshots, packaging, listings, advertisements, social-media content, invoices, customer communications, evidence of confusion, and registration records.
Should I contact the alleged infringer myself?
You can, but significant disputes should generally be evaluated first.
Communications can affect strategy, settlement, evidence, and potential litigation.
Do I have to send a cease-and-desist letter before filing suit?
Not necessarily.
A cease-and-desist letter is common, but there is no universal rule requiring one before every trademark infringement lawsuit.
Can a cease-and-desist letter force someone to stop using a mark?
The letter itself is not a court order.
It may lead to voluntary compliance, negotiation, modification, or settlement.
A court injunction may be required if legally enforceable restrictions are needed.
Can I oppose someone’s trademark application?
Potentially.
A published Principal Register application ordinarily enters a 30-day opposition period, subject to available extensions.
Can I cancel someone else’s trademark registration?
Potentially.
Available cancellation grounds depend on the registration, its age, and the legal basis asserted.
Does winning a TTAB case stop trademark use?
No.
The TTAB determines registration rights.
It cannot ordinarily issue an injunction stopping marketplace use.
Can the TTAB award trademark infringement damages?
No.
Money damages for trademark infringement are outside the TTAB’s ordinary authority.
Where is a trademark infringement lawsuit filed?
Trademark infringement claims are frequently litigated in federal court.
State courts may also hear certain trademark-related claims depending on the circumstances.
Can a court stop trademark infringement quickly?
Potentially.
A trademark owner may seek a temporary restraining order or preliminary injunction where the applicable requirements are satisfied.
What damages can be recovered for trademark infringement?
Potential relief can include the defendant’s profits, the plaintiff’s damages, and costs, subject to the Lanham Act and equitable principles.
Attorney’s fees may be available in exceptional cases.
Must infringement be willful to recover the defendant’s profits?
Not as an absolute prerequisite for ordinary Section 43(a) claims.
The defendant’s mental state can nevertheless remain important to the equitable analysis.
Can trademark damages be enhanced?
Potentially.
Federal law provides enhanced remedies in certain circumstances, including specialized provisions for qualifying counterfeiting.
What are the statutory damages for trademark counterfeiting?
For qualifying counterfeit-mark cases, statutory damages can range from $1,000 to $200,000 per counterfeit mark per type of goods or services.
The maximum can reach $2,000,000 where willful use is established.
Is every trademark infringement case counterfeiting?
No.
Counterfeiting is a specialized category.
Many infringement cases involve confusingly similar trademarks that do not qualify as counterfeit marks.
Is trademark dilution the same as infringement?
No.
Ordinary infringement generally focuses on likelihood of confusion.
Federal dilution protects qualifying famous trademarks from blurring or tarnishment even without consumer confusion.
Does every trademark qualify for dilution protection?
No.
Federal dilution protection is reserved for marks widely recognized by the general consuming public of the United States.
What is dilution by blurring?
Blurring involves association with a famous mark that impairs the famous mark’s distinctiveness.
What is dilution by tarnishment?
Tarnishment involves association with a famous mark that harms its reputation.
Can parody be protected in a dilution dispute?
Potentially.
Federal dilution law contains exclusions involving certain parody, criticism, commentary, news, and noncommercial uses.
The particular use must still be analyzed.
Can using a competitor’s trademark in advertising be legal?
Potentially.
Comparative advertising, descriptive use, nominative use, and other circumstances may permit reference to another trademark depending on how the mark is used and whether consumers are likely to be confused.
What is trademark fair use?
Trademark fair use can allow words to be used descriptively rather than as a source identifier in qualifying circumstances.
The application of the defense depends on the particular use.
Can infringement occur on Amazon or social media?
Yes.
Trademark infringement disputes frequently arise through marketplaces, social-media accounts, websites, online advertisements, and other digital platforms.
Can a domain name infringe a trademark?
Potentially.
A domain name used in a manner likely to cause consumer confusion can create trademark infringement concerns.
Bad-faith domain registrations may also implicate the ACPA or UDRP.
Learn About Cybersquatting & Domain Name Enforcement
Can I enforce a U.S. trademark against conduct in another country?
Not automatically.
Trademark rights are territorial, and U.S. federal infringement law does not function as a general worldwide trademark statute.
Foreign rights and proceedings may be necessary.
What should I do if I receive a trademark infringement letter?
Preserve the demand and evidence of your use.
Identify your first-use dates, registrations, applications, sales territories, and relevant agreements.
Then evaluate the sender’s ownership, priority, and infringement theory before responding.
Protect Your Trademark Before Confusion Becomes a Larger Business Problem
Trademark infringement can affect customer recognition, online visibility, product launches, expansion plans, licensing, investment, and the long-term value of a brand.
The appropriate enforcement strategy depends on both the legal rights involved and the commercial objective.
Some disputes can be resolved through a carefully structured cease-and-desist demand or negotiated coexistence agreement.
Others require a TTAB opposition or cancellation to address federal registration rights.
Cases involving continuing marketplace infringement, urgent commercial harm, or monetary damages may require federal court litigation.
Cohn Legal assists businesses with trademark infringement analysis, cease-and-desist strategy, TTAB proceedings, enforcement and defense, settlement, online brand protection, and related trademark disputes.
