Trademark Infringement: What It Is, Real Examples, and What to Do About It

What Is Trademark Infringement? The Legal Definition

Trademark infringement is the unauthorized use of a mark that is likely to cause consumers to be confused about the source of goods or services. The law does not require intent to copy, or proof that any customer was actually fooled. A likelihood of confusion is enough to establish a violation of trademark rights.

The federal definition under the Lanham Act

Two sections of the Lanham Act define a federal trademark violation. 15 U.S.C. § 1114 covers infringement of federally registered marks, prohibiting any unauthorized use in commerce that is likely to cause confusion, mistake, or deception [1]. 15 U.S.C. § 1125(a) reaches unregistered marks and trade dress, covering any false designation of origin that is likely to confuse consumers about source, sponsorship, or affiliation [2]. Criminal counterfeiting is addressed separately under 18 U.S.C. § 2320 [3].

Registration is not required to have rights, but it matters

You can enforce an unregistered mark, but only within the geographic area where you actually use it and where customers know it. A federal trademark registration adds a nationwide presumption of ownership and validity, access to enhanced remedies, and a public record that defeats any claim of innocent adoption. If your brand is unregistered and facing a dispute, obtaining a trademark registration is usually the first thing to fix. Our guide on whether you should trademark your business name explains the decision.

The Likelihood of Confusion Test: How Courts Decide

Courts decide what is trademark infringement in a given case by weighing a set of confusion factors.

In California and the rest of the Ninth Circuit, the evaluation criteria relies on the eight Sleekcraft factors, from AMF Inc. v. Sleekcraft Boats (1979) [4]. The Second Circuit applies the similar Polaroid factors. No single factor controls, and courts weigh them together.

Sleekcraft factor	What courts assess
1. Strength of the plaintiff’s mark	Stronger, more distinctive marks receive broader protection
2. Proximity of the goods or services	The closer the products, the higher the confusion risk
3. Similarity of the marks	Sound, appearance, and meaning are all assessed
4. Evidence of actual confusion	Consumer complaints, misdirected calls and emails
5. Marketing channels used	Overlap in sales and advertising channels increases risk
6. Degree of purchaser care	Low-cost impulse buys carry higher confusion risk
7. Defendant’s intent	Deliberate copying weighs heavily against the defendant
8. Likelihood of expansion	Overlap in likely future product lines is considered

Types of Trademark Infringement

The main types of trademark infringement are direct infringement, contributory infringement, counterfeiting, and trade dress infringement. They differ in who is liable and how closely the infringing use copies the original. Each is outlined below.

Direct infringement

Direct infringement is the standard case, where a business uses a name, logo, or slogan confusingly similar to yours, in commerce, for related goods or services. Intent is irrelevant to liability. A competitor who independently chose a similar name is just as liable as one who copied you, although deliberate copying increases the damages available.

Contributory infringement

Contributory infringement reaches parties who knowingly enable someone else’s infringement of trademarks. A supplier who keeps printing a copycat’s labels and a marketplace that keeps serving a seller after specific notice can both be liable alongside the direct infringer.

Trademark counterfeiting

A trademark counterfeit is the extreme end of infringement, a mark identical to, or substantially indistinguishable from, a registered mark, used on the same type of goods. Counterfeiting carries the heaviest civil penalties under the Lanham Act and is also a federal crime prosecuted under 18 U.S.C. § 2320 [3].

Trade dress infringement

Trade dress protects the overall look of a product or its packaging, including shape, color scheme, layout, and design. Copying a distinctive package or store design can violate 15 U.S.C. § 1125(a) even when no name or logo is copied, though product designs must have acquired distinctiveness (secondary meaning) before they are protectable [2].

Real Trademark Infringement Examples: Cases Courts Have Ruled On

The clearest trademark infringement examples come from decided trademark disputes, because each one shows where courts draw the line. The two below cover a successful parody defense and a coexistence agreement that collapsed.

Louis Vuitton v. Haute Diggity Dog (4th Circuit, 2007)

Louis Vuitton sued the maker of “Chewy Vuiton” dog toys, plush parodies of its handbags. The Fourth Circuit held for the toy maker, finding a successful parody unlikely to confuse consumers or dilute the famous mark [5]. The lesson is that parody which clearly pokes fun at a famous mark, rather than trading on it, can be a complete defense.

Apple Corps v. Apple Computer (settled, 2007)

The Beatles’ record company and the computer maker fought over the “Apple” name for nearly 30 years, with new lawsuits each time Apple Computer expanded into music. The companies settled in February 2007, with Apple Inc. taking ownership of all Apple-related marks and licensing rights back to Apple Corps [6]. The lesson is that coexistence agreements must anticipate how both businesses will grow, or the trademark disputes simply restart with each expansion.

Trademark Infringement Penalties and Damages

The penalties for a trademark violation range from an order to stop using the mark to multi-million dollar awards and, for counterfeiting, prison time. What applies depends on whether the mark is registered, whether the conduct was willful, and whether it crosses into counterfeiting.

Civil damages under the Lanham Act

Under 15 U.S.C. § 1117(a), a prevailing owner can recover the infringer’s profits and its own actual damages, and the court may increase the damages award up to 3 times, plus attorney’s fees in exceptional cases [9]. In counterfeiting cases, treble damages are the default, and the owner may instead elect statutory damages of $1,000 to $200,000 per counterfeit mark, rising to $2 million per mark where the counterfeiting is willful [9].

Injunctive relief: often the most important remedy

Money is usually secondary. The injunction is what stops the confusion: a court order ending the infringing use, and in stronger cases requiring recalls, destruction of inventory, and transfer of copycat domains. Getting the other mark out of the market usually matters more than any damages figure.

Criminal penalties for counterfeiting

The most serious violation of trademark law is criminal. Intentionally trafficking in goods bearing a counterfeit mark is a federal crime under 18 U.S.C. § 2320. A first offense carries up to 10 years in prison and a $2 million fine for individuals, and fines up to $5 million for companies. Repeat offenses raise the exposure to 20 years and $5 million for individuals [3].

What to Do If You Discover Trademark Infringement

What you should do about trademark infringement depends on your position. If you hold a federally registered mark, you are typically positioned for a cease and desist letter and, if needed, federal court. If your mark is unregistered, speak with a trademark infringement attorney about your common law rights before making any demand. If you are the one accused, do not respond to the letter without counsel. In every scenario, the first three steps are the same.

Step 1: Document the infringement

Preserve the evidence before the infringer can quietly change course. Capture dated screenshots of websites, listings, and social accounts, photograph products and signage, make a test purchase if goods are involved, and note where the infringer is selling. This record establishes the timeline and geographic scope of the case.

Step 2: Do not confront the infringer directly without counsel

A direct message usually backfires. It tips off the infringer to alter evidence, informal wording can understate your rights or waive claims, and an overreaching threat can even expose you to a declaratory judgment suit in the infringer’s home court. Let the first contact come from your trademark infringement lawyer.

Step 3: Consult a trademark attorney before acting

A trademark infringement attorney will assess the strength of your mark, confirm your priority, and match the response to the situation: a cease and desist letter, a platform takedown, a UDRP domain complaint, a TTAB proceeding, or a federal lawsuit. Escalating in the right order preserves leverage and keeps costs proportionate to the threat.

How The Schenk Law Firm Approaches Trademark Infringement

The Schenk Law Firm handles trademark infringement matters from the first assessment through federal litigation. The trademark lawyer who leads the practice, David Lizerbram, has filed, prosecuted, and managed more than 850 trademark applications with the USPTO and advises startups, family-owned companies, and global brands on brand protection and enforcement.

Trademark counsel that prepares cases, not just letters

A demand letter only works when the other side believes you are prepared to follow through. The firm builds each matter as if it will be litigated: priority confirmed, evidence preserved, confusion factors mapped, and remedies identified before the first letter is sent. Enforcement proceeds through demand letters, negotiation, and legal proceedings where necessary. Because trademarks sit inside the firm’s broader business advisory and transactions practice, enforcement decisions are weighed against your commercial goals, not pursued for their own sake.

What a consultation covers

A consultation reviews your mark and registration status, your evidence, the strength of the confusion case under the Sleekcraft factors, and the realistic range of outcomes. If you have received a cease and desist letter, the review covers your defenses, including fair use, parody, and prior use, before any response is sent.

FAQs

What is the definition of trademark infringement?

The trademark infringement meaning under federal law is the unauthorized use of a mark in commerce that is likely to cause confusion, mistake, or deception about the source of goods or services. Courts define trademark infringement by the likelihood of confusion, so actual confusion does not need to be proven.

What are the types of trademark infringement?

The four main types are direct infringement, contributory infringement, counterfeiting, and trade dress infringement. Direct infringement is the most common, while counterfeiting involves near-identical copies and carries the harshest penalties. A trademark lawyer can tell you which category your situation falls into.

What are some examples of trademark infringement?

Decided cases include Starbucks v. Lundberg (2005), where “Sambuck’s Coffeehouse” was permanently enjoined, and Adidas v. Forever 21, a stripe-design dispute that settled. Louis Vuitton v. Haute Diggity Dog (2007) went the other way, and the clear parody was held non-infringing.

What law makes trademark infringement illegal?

The federal Lanham Act. 15 U.S.C. § 1114 covers registered marks, and 15 U.S.C. § 1125(a) covers unregistered marks and trade dress. Criminal counterfeiting is prosecuted under 18 U.S.C. § 2320, and states add their own unfair competition and dilution laws.

What happens if you are found liable for trademark infringement?

A court that finds a trademark violation can order you to stop using the mark, surrender or destroy infringing goods, and pay the owner’s damages and your profits from the infringement, with awards increased up to 3 times. In willful counterfeiting cases, statutory damages can reach $2 million per counterfeit mark.

Can I use a trademarked name without permission?

Only in limited situations. Descriptive fair use (using words in their ordinary meaning), nominative fair use (referring to the brand itself, such as in a comparison or review), and genuine parody are recognized defenses. Using a similar name to sell related goods or services is where logo infringement and name infringement claims begin, and where a trademark infringement lawyer should review before you proceed.

What is the difference between trademark infringement and copyright infringement?

Trademark infringement concerns consumer confusion about the source of goods or services. Copyright infringement concerns copying a creative work itself, such as artwork, text, or code. A copied logo can violate both. Our comparison of trademark vs copyright vs patent breaks down which protection applies to what.

References

This article is attorney advertising provided by The Schenk Law Firm, LLP for general informational purposes only. It is not legal advice, and reading it does not create an attorney-client relationship. Trademark outcomes depend on the specific facts of each matter.