• Home
  • Latest
  • Fortune 500
  • Finance
  • Tech
  • Leadership
  • Lifestyle
  • Rankings
  • Multimedia
Tech

Supreme Court says “patent troll” for first time in Cisco ruling

By
Jeff John Roberts
Jeff John Roberts
Editor, Finance and Crypto
Down Arrow Button Icon
By
Jeff John Roberts
Jeff John Roberts
Editor, Finance and Crypto
Down Arrow Button Icon
May 26, 2015, 4:40 PM ET
105208312
Troll Road Sign, Trollstigen (The Troll Path)Photograph by Douglas Pearson — Getty Images

Good news: It’s now safe to say “patent troll” in polite company. For years, the trolls – which are shell companies that acquire old patents in order to shake down real businesses – have claimed the term has no place in legal discourse, and pushed for a variety of jargon-y alternatives like “NPE” and “PAE” instead.

Well, so much for that. On Tuesday, no less than Justice Antonin Scalia gave the term its proper place by including it for the first time in the Supreme Court lexicon, warning that a ruling “increases the in terrorem power of patent trolls.”

Scalia’s words (confirmed as a first by Professor Mark Lemley) came in a case in which a patent troll called Commil, controlled by an asbestos lawyer, is suing Cisco (CSCO) over a 2001 patent that describes methods of implementing wireless networking.

The case itself turned on an arcane point of patent law (see THE? next section if you’re into that sort of thing); the Supreme Court resolved it, in part, by instructing a Texas court to revisit a $67 million verdict against Cisco. But the case’s larger significance could turn out to be the Supreme Court’s explicit acknowledgement of trolls’ pernicious influence in the patent system.

Scalia’s troll comment came as part of a dissenting opinion, but the other judges likewise addressed the problem:

“Some companies may use patents as a sword to go after defendants for money, even when their claims are frivolous,” wrote Justice Anthony Kennedy for a 6-2 majority. “This behavior can impose a ‘harmful tax on innovation’.”

In response to the patent troll danger raised by Scalia, Kennedy suggested that other recent Supreme Court decisions, including one that makes it easier to stick trolls with legal bills, will address this. More broadly, the Cisco decision also comes as a time when Congress is trying to pass patent reform for the third time in five years; the previous efforts were largely stymied by trolls and trial lawyers.

Patent validity and infringing in “good faith”

For the Supreme Court, the Cisco case came as a bit of unfinished business related to a 2011 patent case about deep fryers called Global-Tech v SEB. The issue at stake was so-called “induced infringement,” which is when a company does something (typically selling or supplying a product) that leads others, like end users, to infringe a patent.

In the deep fryer case, the Supreme Court found that “induced infringement” rules aren’t as severe as for direct infringement. Specifically, it found that patent defendants can escape liability if they could show they did not know about a patent, or that what they were doing infringed on the patent. This amounted to a “good faith” defense that is not available for direct infringement.

Cisco, however, made a different argument: It claimed it should be off the hook for induced infringement so long as it believed, in good faith, that the patent was invalid. This amounts to saying, “We knew about the patent, and that what we were doing could infringe it – but we thought the patent was no good and would never hold up.”

Justice Kennedy, however, didn’t buy this argument and said it could not be squared with the so-called “presumption of validity” that has long attached to patents. He also suggested that companies confronting dubious patents had other avenues available by which to attack them, and so they do need a “good faith” defense for validity.

So what’s the upshot? Well, other than the words “patent troll,” the Cisco ruling is unlikely to move the needle much when it comes to patent policy. As respected patent scholar, Dennis Crouch, notes at PatentlyO:

This is a split decision for patentees. On the one hand, it pushes away an entire set of defenses to inducement. But, on the other hand, the court solidifies a high wall by requiring proof that an accused inducer have known that the induced acts would constitute infringement of the asserted patent claims

Meanwhile, the case will finally land back before a jury after a series of strange twists and turns. These include ill-advised comments about pork and Jesus by Cisco’s lawyers, which is what led the courts to review the case reviewed in the first place.

You can read the decision for yourself below (I’ve underlined some of the most relevant bits).

Commil v Cisco SCOTUS Ruling

About the Author
By Jeff John RobertsEditor, Finance and Crypto
LinkedIn iconTwitter icon

Jeff John Roberts is the Finance and Crypto editor at Fortune, overseeing coverage of the blockchain and how technology is changing finance.

See full bioRight Arrow Button Icon

Latest in Tech

Sarandos
CommentaryAntitrust
Netflix’s takeover of Warner Brothers is a nightmare for consumers
By Ike BrannonDecember 11, 2025
60 minutes ago
Musk
Big TechElon Musk
Elon Musk admits DOGE was only ‘somewhat successful’ and he should have ‘worked on my companies’ instead
By Bill Barrow and The Associated PressDecember 11, 2025
2 hours ago
Dresser
AIOpenAI
Slack CEO leaves Salesforce to become OpenAI’s first revenue chief, tackle multibillion-dollar losses
By The Associated PressDecember 11, 2025
2 hours ago
Sundar
CybersecurityAntitrust
Google illegally scraped the web to fix its AI problems and catch up to OpenAI, European regulators probe
By Kelvin Chan and The Associated PressDecember 11, 2025
2 hours ago
Warren
Big TechAntitrust
Warner Bros. merger fight draws fire across U.S. political divide
By Hannah Miller and BloombergDecember 11, 2025
2 hours ago
OpenAI
LawChatGPT
OpenAI, Microsoft face wrongful death lawsuit over ‘paranoid delusions’ that led former tech worker into murder-suicide
By Dave Collins, Matt O'Brien, Barbara Ortutay and The Associated PressDecember 11, 2025
3 hours ago

Most Popular

placeholder alt text
Success
At 18, doctors gave him three hours to live. He played video games from his hospital bed—and now, he’s built a $10 million-a-year video game studio
By Preston ForeDecember 10, 2025
1 day ago
placeholder alt text
Politics
Exclusive: U.S. businesses are getting throttled by the drop in tourism from Canada: ‘I can count the number of Canadian visitors on one hand’
By Dave SmithDecember 10, 2025
1 day ago
placeholder alt text
Economy
‘Be careful what you wish for’: Top economist warns any additional interest rate cuts after today would signal the economy is slipping into danger
By Eva RoytburgDecember 10, 2025
21 hours ago
placeholder alt text
Economy
‘Fodder for a recession’: Top economist Mark Zandi warns about so many Americans ‘already living on the financial edge’ in a K-shaped economy 
By Eva RoytburgDecember 9, 2025
2 days ago
placeholder alt text
Success
Netflix–Paramount bidding wars are pushing Warner Bros CEO David Zaslav toward billionaire status—he has one rule for success: ‘Never be outworked’
By Preston ForeDecember 10, 2025
23 hours ago
placeholder alt text
Uncategorized
Transforming customer support through intelligent AI operations
By Lauren ChomiukNovember 26, 2025
15 days ago
Rankings
  • 100 Best Companies
  • Fortune 500
  • Global 500
  • Fortune 500 Europe
  • Most Powerful Women
  • Future 50
  • World’s Most Admired Companies
  • See All Rankings
Sections
  • Finance
  • Leadership
  • Success
  • Tech
  • Asia
  • Europe
  • Environment
  • Fortune Crypto
  • Health
  • Retail
  • Lifestyle
  • Politics
  • Newsletters
  • Magazine
  • Features
  • Commentary
  • Mpw
  • CEO Initiative
  • Conferences
  • Personal Finance
  • Education
Customer Support
  • Frequently Asked Questions
  • Customer Service Portal
  • Privacy Policy
  • Terms Of Use
  • Single Issues For Purchase
  • International Print
Commercial Services
  • Advertising
  • Fortune Brand Studio
  • Fortune Analytics
  • Fortune Conferences
  • Business Development
About Us
  • About Us
  • Editorial Calendar
  • Press Center
  • Work At Fortune
  • Diversity And Inclusion
  • Terms And Conditions
  • Site Map

© 2025 Fortune Media IP Limited. All Rights Reserved. Use of this site constitutes acceptance of our Terms of Use and Privacy Policy | CA Notice at Collection and Privacy Notice | Do Not Sell/Share My Personal Information
FORTUNE is a trademark of Fortune Media IP Limited, registered in the U.S. and other countries. FORTUNE may receive compensation for some links to products and services on this website. Offers may be subject to change without notice.