U.S. trademark law protects distinctive marks used in commerce to identify goods and services. It's built on key principles like distinctiveness, use in commerce, and likelihood of confusion, which together determine what can be protected and how rights are enforced.
The Lanham Act of 1946 forms the foundation of modern trademark law. It established features like federal registration, incontestability, and dilution protection, giving trademark owners powerful tools to safeguard their brands in the marketplace.
U.S. Trademark Law
Key Principles of Trademark Law
Distinctiveness is the threshold question: can the mark distinguish one company's goods or services from another's? Not all marks are equally distinctive, and the law arranges them on a spectrum:
- Fanciful marks are invented words with no prior meaning (Xerox). These get the strongest protection.
- Arbitrary marks are real words used in unrelated contexts (Apple for computers).
- Suggestive marks hint at a quality of the product without directly describing it (Greyhound for bus travel).
- Descriptive marks directly describe the product or its features (Best Buy). These are only protectable if they've acquired secondary meaning, meaning consumers have come to associate the term with a specific source through sustained use and promotion (American Airlines is a good example).
- Generic terms are common names for goods or services and can never function as trademarks (escalator, thermos, aspirin).
Use in commerce is required to establish and maintain trademark rights. The mark must actually be used on goods that are sold or transported. For federal registration specifically, the use must involve interstate commerce (across state lines).
Likelihood of confusion is the core test for infringement. If consumers are likely to be confused, mistaken, or deceived about the source of goods because two marks are similar, that's infringement. Courts weigh several factors: similarity of the marks, relatedness of the goods or services, strength of the senior mark, evidence of actual confusion, the alleged infringer's intent, and consumer sophistication.
Priority of use determines who owns the rights. Generally, the first party to use a mark in commerce has priority. Common law rights (based on use without federal registration) are limited to the geographic area where the mark is actually used. The Burger King dispute illustrates this: a local Florida restaurant using the name before the national chain had priority in its specific area.
Registration at the federal level provides benefits beyond common law rights, including nationwide constructive notice of ownership, a legal presumption of validity, and nationwide priority from the filing date.
Evolution of Federal Trademark Legislation
Federal trademark law developed through a series of statutes, each building on the failures or limitations of the last.
- Trademark Act of 1870: The first federal trademark law, broad in scope. The Supreme Court struck it down in 1879 (the Trade-Mark Cases), ruling that Congress had exceeded its power under the Copyright Clause, since trademarks don't require the originality that copyrights and patents do.
- Trademark Act of 1881: Congress tried again with a narrower law, this time grounded in the Commerce Clause. It covered only foreign commerce and trade with Native American tribes, and it survived constitutional challenge.
- Trademark Act of 1905: Expanded protections to marks used in interstate commerce and created the first principal register, an official federal record of trademarks.
- Lanham Act of 1946: The comprehensive federal trademark statute still in effect today, named after Representative Fritz Lanham. It significantly expanded trademark rights and remedies and serves as the basis for modern trademark law.
Provisions of the Lanham Act
Principal and supplemental registers. The Lanham Act created two registers. The principal register is for marks that are already distinctive and provides the greatest protection (think Coca-Cola). The supplemental register is for marks that aren't yet distinctive but are capable of acquiring distinctiveness over time. Marks on the supplemental register get limited protection.
Incontestability. After five years of continuous use following registration, a mark can become incontestable. This means it becomes immune from certain challenges, such as arguments that the mark is merely descriptive. McDonald's golden arches are a classic example. Incontestability doesn't make a mark invulnerable to all challenges, but it significantly narrows the grounds on which someone can attack the registration.
Intent-to-use applications. You don't have to wait until you're already using a mark to file. The Lanham Act allows applications based on a bona fide intention to use the mark in commerce. However, actual use is still required before the registration will be granted.
Dilution protection. Famous marks get an extra layer of protection against uses that blur their distinctiveness or tarnish their reputation, even when the goods are completely unrelated and there's no likelihood of confusion. A company selling "Kodak" brand bicycles could face a dilution claim even though Kodak makes cameras, not bikes.
Remedies available under the Lanham Act include:
- Injunctions: court orders to stop the infringing use
- Damages: monetary compensation for the trademark owner's losses (lost profits, reasonable royalty)
- Profits: disgorgement of the infringer's profits gained from the infringement
- Costs and attorneys' fees: available in exceptional cases
- Statutory damages for counterfeiting: set amounts established by law
Federal unfair competition law. Section 43(a) of the Lanham Act reaches beyond registered trademarks. It protects against false designation of origin and false advertising, covering claims involving trade dress, product configuration, and other unfair competition that doesn't fit neatly into traditional trademark infringement.
Additional Trademark Concepts
Infringement and defenses. Trademark infringement occurs when unauthorized use of a mark causes a likelihood of confusion among consumers. Two key defenses exist. The fair use defense allows limited use of another's mark for descriptive purposes or commentary (for example, using "fish fry" to describe a product even if someone has trademarked that phrase). The functionality doctrine prevents trademark protection for features that are essential to a product's use or purpose, keeping competitors free to use functional designs.
Maintenance and loss of rights. Trademark rights require ongoing attention. Trademark clearance is the process of searching for existing marks before adopting a new one, helping avoid costly conflicts. Abandonment occurs when a mark owner stops using the mark with no intent to resume use, which leads to loss of rights. Concurrent use is a doctrine that allows multiple parties to use similar marks in different geographic areas under specific court-approved conditions.
Special types of marks. Certification marks are a distinct category. Rather than identifying a single source, they indicate that goods or services meet certain standards set by a certifying organization (think the UL safety mark or the "100% Organic" seal).