20 Landmark Intellectual Property Cases Every Business Should Know (2026)

Intellectual property law isn’t only written by Congress. A large part of it comes from court decisions, where judges decide what a statute actually means when two businesses (or an artist and a corporation) can’t agree.

Below are 20 of the most important trademark and copyright disputes, from Supreme Court rulings to headline-grabbing fights between brands. For each one we explain what happened and why it still matters.

Quick Reference: 20 Landmark IP Cases

Landmark Copyright Cases

1. Campbell v. Acuff-Rose Music (1994)

The rap group 2 Live Crew recorded “Pretty Woman,” a parody of Roy Orbison’s “Oh, Pretty Woman,” after the song’s publisher, Acuff-Rose, refused them a license. The Supreme Court held that a commercial parody can still be fair use, and that the key question is whether the new work is “transformative,” adding new meaning or message. It sent the case back for further review, and the parties settled. Campbell is still the starting point for any parody defense.

2. Fogerty v. Fantasy (1994)

Fantasy Records, which owned the rights to John Fogerty’s Creedence Clearwater Revival songs, sued Fogerty, claiming his solo song “The Old Man Down the Road” copied his own earlier hit “Run Through the Jungle.” A jury cleared Fogerty. The bigger fight was over legal fees: the Supreme Court held that courts must treat winning defendants and winning plaintiffs the same way when deciding whether to award attorney’s fees. That ruling shapes how risky copyright suits are for both sides.

3. A&M Records v. Napster (2001)

Napster let millions of users swap music files for free. Record labels sued, and the Ninth Circuit held that Napster could be liable for its users’ infringement because it knew about it, could control it, and benefited from it. Napster shut down its free service in 2001. The case set the template for how courts treat platforms that knowingly enable infringement.

4. Associated Press v. Fairey (settled 2011)

Shepard Fairey’s famous “Hope” poster of Barack Obama was based on an AP photograph by Mannie Garcia. When the AP raised copyright claims, Fairey sued, arguing fair use. The case settled in 2011, with the parties agreeing to share rights to the image, after Fairey admitted he had misrepresented which photo he used. It’s a reminder that “it’s art” isn’t a defense on its own, and that how you handle evidence matters.

5. Viacom v. YouTube (2010 to 2014)

Viacom sought $1 billion, claiming YouTube profited from thousands of clips of its shows uploaded by users. The courts held that YouTube was protected by the DMCA’s safe harbor, because general awareness that infringement was happening wasn’t enough. A platform loses protection when it knows about specific infringing clips and doesn’t act. The parties settled in 2014. This is why DMCA takedown notices are the main tool for getting content removed.

6. Williams v. Gaye: “Blurred Lines” (2018)

Marvin Gaye’s family claimed Robin Thicke and Pharrell Williams’s “Blurred Lines” copied Gaye’s “Got to Give It Up.” A jury agreed in 2015, and the Ninth Circuit upheld the verdict in 2018, leaving about $5 million in damages plus a share of future royalties. Many musicians worried the case protected a song’s “feel.” Later decisions, including the Ninth Circuit’s 2020 ruling for Led Zeppelin over “Stairway to Heaven,” pulled back toward protecting specific musical expression.

7. Google v. Oracle (2021)

Oracle claimed Google copied about 11,500 lines of Java code to build Android. The Supreme Court ruled 6 to 2 that Google’s reimplementation of the code was fair use, because it let programmers use skills they already had in a new, transformative platform. The decision is a major precedent for software interoperability.

8. Andy Warhol Foundation v. Goldsmith (2023)

Andy Warhol made a series of silkscreens from Lynn Goldsmith’s photo of the musician Prince. When the Warhol Foundation licensed one of them to a magazine in 2016, Goldsmith sued. The Supreme Court ruled 7 to 2 that this licensing use wasn’t fair use, because it served the same purpose as Goldsmith’s photo: illustrating a magazine story about Prince. The takeaway: adding a new style isn’t enough if your use competes with the original’s market.

9. Thaler v. Perlmutter (2025)

Dr. Stephen Thaler tried to register an image he said was created entirely by his AI system, listing the AI as the author. The Copyright Office refused, and in 2025 the D.C. Circuit agreed that the Copyright Act requires a human author. The Supreme Court declined to hear the case in March 2026. Works made with AI help can still be protected, but only the parts a human created. See our guide on protecting your brand from generative AI copycats.

10. Mattel v. MGA: Barbie v. Bratz (2004 to 2013)

Carter Bryant came up with the idea for Bratz dolls while working at Mattel, then took it to rival MGA. Mattel sued in 2004 and won a large jury verdict in 2008, but the Ninth Circuit threw it out in 2010. A 2011 retrial went MGA’s way, and a 2013 appeal wiped out the largest part of that award too. After nearly a decade of litigation and enormous legal bills, the case is mostly remembered as a warning. The lesson for businesses: clear IP ownership terms with employees are far cheaper than litigation.

Landmark Trademark Cases

11. Qualitex v. Jacobson (1995)

Qualitex used a distinctive green-gold color on its dry cleaning press pads. The Supreme Court unanimously held that a color alone can be a trademark, as long as customers have come to recognize it as identifying the brand and the color isn’t functional. That ruling opened the door to non-traditional marks, from Tiffany blue to Louboutin’s red soles. Our article on non-traditional trademarks covers this in more detail.

12. Gucci v. Guess (2012)

Gucci sued Guess over shoes and handbags using a “G” pattern, a green-red-green stripe, and other elements that resembled Gucci’s designs. A federal court in New York found infringement, but awarded about $4.7 million instead of the $221 million Gucci asked for. The court also faulted Gucci for waiting years to act on products it knew about. Monitoring and acting early matters.

13. AMPAS v. GoDaddy (2015)

The Academy of Motion Picture Arts and Sciences sued GoDaddy, claiming its parked-domain program profited from Oscar-related domain names registered by its customers. After years of litigation, the court ruled for GoDaddy in 2015, finding no evidence that GoDaddy itself acted with bad-faith intent to profit from the Academy’s marks. Brand owners usually do better going after the registrant directly, often through a UDRP complaint.

14. Louis Vuitton v. Louis Vuiton Dak (2016)

A fried chicken restaurant in Seoul called itself “Louis Vuiton Dak” (“dak” means chicken in Korean) and used packaging that echoed Louis Vuitton’s monogram. A South Korean court ordered it to stop. When the owner changed the name only slightly, the court fined him 14.5 million won. A joke name can still trade on a famous brand’s reputation, even in an unrelated industry.

15. Matal v. Tam (2017)

Simon Tam’s band, The Slants, was refused a trademark registration because the name was considered disparaging to Asian Americans, even though Tam chose it to reclaim the term. The Supreme Court unanimously struck down the ban on “disparaging” trademarks as a violation of free speech. Two years later, Iancu v. Brunetti struck down the ban on “immoral or scandalous” marks for the same reason.

16. Kylie Minogue v. Kylie Jenner (2017)

In 2014, Kylie Jenner applied to register KYLIE for advertising and endorsement services. Kylie Minogue, who had used the name commercially for decades, opposed the application before the Trademark Trial and Appeal Board in 2015, arguing it would cause confusion and dilute her brand. In 2017 the opposition ended in Minogue’s favor and Jenner’s application was abandoned. Fame doesn’t beat earlier use. Here’s how a trademark opposition works.

17. USPTO v. Booking.com (2020)

The USPTO refused to register BOOKING.COM, arguing that adding “.com” to a generic word like “booking” can’t create a trademark. The Supreme Court disagreed, 8 to 1. If consumers actually see a “generic.com” term as a brand name, it can be registered. The decision didn’t create an automatic rule. Applicants still need strong evidence, such as consumer surveys. Our guide to suggestive vs. descriptive trademarks explains how distinctiveness works.

18. Jack Daniel’s v. VIP Products (2023)

VIP Products sold a “Bad Spaniels” dog toy shaped like a Jack Daniel’s bottle, with poop jokes in place of the whiskey label. VIP argued it was a protected parody. The Supreme Court ruled unanimously for Jack Daniel’s on the key question: when you use another brand’s look as your own product’s branding, you don’t get the extra First Amendment protection that applies to expressive works, and the normal likelihood-of-confusion test applies. On remand, the trial court found no likelihood of confusion but ruled for Jack Daniel’s on dilution. In August 2026, the Ninth Circuit vacated that dilution ruling too. Even so, the Supreme Court’s holding is what matters for other businesses: parody is not a shortcut around trademark law when it’s used as branding.

19. Adidas v. Thom Browne (2023 to 2026)

Adidas claimed Thom Browne’s four-stripe designs infringed its famous three stripes. In January 2023, a federal jury in New York found no infringement or dilution. The Second Circuit affirmed in 2024 and, in April 2026, refused to reopen the case based on emails from separate U.K. litigation. Even a famous mark doesn’t cover every design that uses a similar element. The question is always whether consumers are actually confused.

20. Vidal v. Elster: “Trump Too Small” (2024)

Steve Elster tried to register TRUMP TOO SMALL for T-shirts. The USPTO refused under the rule that bars registering a living person’s name without their consent. The Supreme Court unanimously upheld that rule, finding it doesn’t violate free speech. You can still sell the shirts, but you can’t register someone else’s name as your trademark without their written consent.

What These Cases Mean for Your Business

A few lessons come up again and again across these disputes:

• Clear your name before you launch. Kylie, Louis Vuiton Dak and Gucci all show the cost of picking a name or design that’s too close to someone else’s. A proper trademark search is cheap insurance.
• Watch for copycats and act early. Waiting can cost you damages, as Gucci learned. Our trademark monitoring services catch conflicting filings while the cheap options are still open.
• Don’t rely on “it’s a parody” or “it’s transformative.” After Jack Daniel’s and Warhol, both defenses are narrower than many businesses assume.
• Put ownership in writing. Bratz shows what happens when it’s unclear who owns an idea developed by an employee.
• Register early. Registration gives you stronger remedies in both trademark and copyright disputes.

Frequently Asked Questions

What is the most famous intellectual property case?

There’s no single answer, but Supreme Court cases such as Campbell v. Acuff-Rose (parody and fair use), Google v. Oracle (software and fair use) and Jack Daniel’s v. VIP Products (parody products and trademarks) are among the most cited because they set rules that apply to everyone.

What did the Supreme Court decide in the Jack Daniel’s dog toy case?

In 2023, the Supreme Court unanimously held that when a company uses another brand’s trademark as branding for its own product, it doesn’t get special First Amendment protection, even if the use is a parody. The normal likelihood-of-confusion test applies.

Can AI-generated work be copyrighted?

Not if it was created entirely by AI. In Thaler v. Perlmutter, the courts held that U.S. copyright law requires a human author, and the Supreme Court declined to review that ruling in 2026. Human-created parts of an AI-assisted work can still be protected.

What is fair use in copyright law?

Fair use allows limited use of copyrighted material without permission for purposes such as commentary, criticism, parody, news reporting, and teaching. Courts weigh four factors, and after Warhol v. Goldsmith they look closely at whether the new use serves the same purpose as the original.

How can a business avoid an intellectual property dispute?

Search before you choose a name or logo, register your trademarks and key copyrights early, put IP ownership in writing with employees and contractors, and monitor for copycats so you can act before deadlines pass.

Protect Your Brand Before It Becomes a Case Study

Most of these disputes could have been avoided, or resolved far more cheaply, with good advice at the start. Drishti Law helps businesses clear, register, and enforce their trademarks and copyrights. Call 773-234-1139 or book a free consultation.

Sahil M.

Sahil Malhotra
Sahil Malhotra is an Intellectual Property Attorney, who founded Drishti (“vision”) law because of his vision in protecting dreams and ideas.

He provided individuals and small businesses with an opportunity to enhance their IP’s value by helping them register trademarks and successfully argue against office actions. In addition to his training and experience, he has been deeply involved in the multifaceted IP portfolio at UIC and continues to be associated with IP organizations and conferences.

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