Editor’s note: This article has been updated to reflect Blog Herald’s current editorial standards under Brown Brothers Media.
In January 2006, a German blogger named Patrick Breitenbach received an email from Günther Klum — the father of supermodel Heidi Klum. The complaint wasn’t about defamation. It wasn’t about stolen images. It was about a URL.
Breitenbach ran a blog called Werbeblogger. In November 2004, he’d published a post titled “Heidi Klum wird McHottie” — a lighthearted piece about the model. His blogging software, like virtually every CMS then and now, automatically generated a URL from the title. The result was a web address that contained the words “heidi_klum.” Thirteen months later, Günther Klum noticed, objected, and demanded the name be removed from the URL.
The cease and desist letter stated: “The name ‘Heidi Klum’ is protected by law. I’m asking you to delete the name from your URL and desist from using the name ‘Heidi Klum’ for advertising purposes.” When Breitenbach didn’t comply, Klum’s father escalated to lawyers.
At the time, the story struck most of the blogging world as absurd. Blog Herald ran it under the headline “Have the Germans Gone Crazy?” American bloggers were baffled. The URL was generated automatically by standard software. The post was editorial, not commercial. The idea that mentioning a public figure’s name in a blog post — and, by extension, in the URL that blog post generated — could constitute trademark infringement seemed to fundamentally misunderstand how the internet worked.
Twenty years later, it still does. But the legal landscape around it has gotten considerably more complicated.
Why the Klum case still matters
The Breitenbach case was an early example of something that has since become routine: the collision between trademark law and the basic mechanics of content publishing. Every modern CMS — WordPress, Ghost, Webflow, Substack — generates URLs from post titles by default. Every search engine indexes those URLs and uses the words in them as relevance signals. If you write about a person, a company, or a product, their name will almost certainly appear in your URL.
In 2006, this was novel enough that a trademark holder could genuinely not understand why a blogger’s URL contained their client’s name. In 2026, the technical reality is universally understood. But the legal pressure hasn’t gone away — it’s just become more sophisticated.
Bloggers today receive cease and desist letters not just for URLs, but for using brand names in titles, meta descriptions, image alt text, and social media posts. The letters are often automated, generated by brand protection services that crawl the web looking for unauthorized mentions. Many of them are legally groundless. But they’re intimidating enough that most independent publishers comply rather than risk the cost of a legal challenge.
What the law actually says
This is important for bloggers to understand, because the gap between what trademark holders claim and what the law actually protects is significant.
According to the Electronic Frontier Foundation, using someone’s trademark to refer to them or their products — as opposed to selling competing products under their name — is generally protected under what’s called “nominative fair use.” You can use a company name in a product review. You can use a celebrity’s name in an article about them. You can even use a trademark in a domain name, as long as it’s clear you’re not claiming to be or speak for the trademark holder.
The key legal distinction is between commercial use — using someone’s mark to sell competing goods or imply endorsement — and editorial use — referring to a person or brand in the context of commentary, criticism, news, or analysis. Blog posts about public figures fall squarely into editorial use in virtually every jurisdiction, including Germany, where Breitenbach’s case originated.
That said, the law varies by country, and the line between editorial and commercial use can blur — particularly when a blog carries advertising or affiliate links. Courts have occasionally found that the presence of ads on a site gives it a “commercial character” that weakens fair use arguments. This is worth keeping in mind if you’re running a monetized blog and writing about trademarked brands.
The Streisand Effect, before it had a name
There’s an irony to the Klum case that’s worth noting. Günther Klum sent his cease and desist to suppress the use of his daughter’s name in a single URL on a German-language blog. The result was international coverage across the American blogosphere, permanent archive entries on multiple news sites, and Breitenbach’s readership surging as the story spread.
This dynamic — where an attempt to suppress information online generates far more attention than the original content ever would have — was later formalized as the “Streisand Effect,” named after Barbra Streisand’s 2003 attempt to suppress aerial photographs of her Malibu home. But the Klum case predates the widespread use of that term and follows the exact same pattern.
For bloggers, this is a useful reference point when evaluating whether to comply with an aggressive cease and desist. The party sending the letter may have legitimate trademark concerns. Or they may be attempting to suppress editorial coverage they don’t like, using trademark law as a weapon. Understanding the difference is important — and understanding that premature compliance can set a precedent that invites further demands is equally important.
What bloggers should actually do when they receive a cease and desist
The Breitenbach case is a good prompt for every blogger to think through how they’d handle this situation before it happens. Because if you publish for long enough, especially about brands, products, or public figures, it probably will.
First, don’t panic and don’t immediately comply. A cease and desist letter is not a court order. It’s a request. It carries no legal force on its own. The sender is hoping you’ll be intimidated enough to act without consulting anyone. That’s a strategy, not a legal proceeding.
Second, evaluate whether the claim has merit. If you’re using someone’s trademarked name to sell competing products or to imply their endorsement of your site, the claim may be legitimate. If you’re using their name in the context of editorial commentary — a blog post, a review, a news article — it’s almost certainly protected speech.
Third, consider consulting a lawyer. Many bloggers assume legal advice is prohibitively expensive. Organizations like the Electronic Frontier Foundation provide free resources specifically for bloggers facing intellectual property disputes. If the stakes are significant, a brief consultation with an IP attorney is worth the investment.
Fourth, document everything. Save the cease and desist letter, your response, and any subsequent correspondence. If the dispute escalates, this record matters.
And finally, consider whether the trademark holder’s real concern is legitimate even if their legal approach is heavy-handed. Sometimes a polite, direct response that acknowledges their interest while explaining the editorial nature of your content resolves the situation without conflict. Not every cease and desist is an act of aggression. Some are sent by people who, like Günther Klum in 2006, simply don’t understand how blog software generates URLs.
The bigger picture
The Klum case was a small story in 2006. A supermodel’s father misunderstood how WordPress worked and sent an ill-advised email. It was easy to laugh at. It was easy to dismiss.
But the underlying tension it exposed — between trademark holders’ desire to control how their names are used and publishers’ right to discuss public figures freely — has only intensified. In an era where brand protection is increasingly automated, where AI-generated takedown requests are flooding publishers, and where the legal landscape around online speech is shifting in multiple jurisdictions simultaneously, the questions Patrick Breitenbach faced in his inbox twenty years ago are the same questions bloggers face today.
The specifics change. The dynamic doesn’t. If you publish online, you’re operating in a space where intellectual property law, free speech rights, and the commercial interests of powerful brands all intersect. Understanding where you stand in that intersection — legally, practically, and strategically — isn’t optional. It’s part of the job.
