WP Engine sends a cease-and-desist letter to Automattic to “retract false, harmful, and disparaging statements”, after Matt Mullenweg called it a “cancer”
This is the first formal legal response to Mullenweg’s public attack on WP Engine, following his claim that the host was harming the WordPress ecosystem. It moves a dispute over the project’s commercial boundaries from rhetoric into documented legal demands.
The conflict quickly broadened into reciprocal trademark claims and then litigation, including WP Engine’s California lawsuit against Automattic and Mullenweg. That sequence makes the letter significant as an early pressure point in a wider fight over access, branding, and authority around WordPress.
First-order effects
WP Engine puts Automattic on notice to withdraw the disputed statements, raising immediate legal and reputational stakes for Automattic and Mullenweg.
The companies’ disagreement is formalized as a legal dispute rather than a public argument, creating a record that can shape later claims and negotiations.
Second-order effects
Automattic is pushed to defend its criticism or reframe the dispute around trademark and licensing; its subsequent cease-and-desist alleging trademark misuse shows the conflict becoming reciprocal.
Customers and partners of both companies face more uncertainty about the boundaries between the WordPress project, Automattic’s commercial services, and third-party hosts.
Third-order effects
If such disputes persist, major open-source commercial ecosystems may rely more heavily on trademark, licensing, and platform-access mechanisms to police participants’ behavior.
The episode tests whether governance power around a widely used open-source project can coexist with a competitive hosting market without disputes spilling into courts and customer relationships.
The trend: Open-source ecosystem governance is increasingly colliding with commercial platform competition, turning brand and access disputes into legal leverage.
Today WP Engine sent what is called a “cease and desist” letter to Automattic demanding that Automattic and its CEO Matt Mullenweg stop making and retract false, harmful and disparaging statements against WP Engine. In response to misinformation he has disseminated about the
@wpengine In the days leading up to Mr. Mullenweg's September 20th keynote address at the WordCamp US Convention, Automattic suddenly began demanding that WP Engine pay Automattic large sums of money, and if it didn't, Automattic would wage a war against WP Engine. Yikes. 😬
my cynical read is that A8c business model of taking investor money to “partner with WordPress” is drying up. blackmail to “license” a trademark is really scratching on the bottom of a barrel for last shreds of its value.
I'm sort of on WP Engine's side in this argument... Like Vercel, they certainly take advantage of developers' lack of know how (same could be said for many SaaS apps). But they've also contributed a ton to open source and making WordPress better — ACF, WPGraphQL, etc.
I'd love to read @automattic or @photomatt's response to this well-written letter so that we can see both sides to the story. So far, I haven't seen ANY legally valid claims against WP Engine - just nonsense about moral obligations, non-trademarked terms, post revisions, etc.
Matt Mullenweg is effing with the wrong company. WordaPress is open source software anyone can use and implement, managed by a non profit foundation. Matt is just crabby that someone else figured out how to make more money off WordPress than he did.
@wpengine “I wanted to let you know that WP Engine is modifying the WordPress dashboard's news widget to strip out any negative comments about them. We had a couple of users where the website broke because of that.”
This is the entire cease and desist letter sent to Matt Mullenweg and the board of Automattic (but not the foundation, as Matt erroneously claimed earlier today). Very sad for the community that we have to screenshot and share the truth, but the misinformation has to stop.