It's unclear if WP Engine is actually violating any copyright or trademark:
https://arstechnica.com/tech-policy/2024/10/automattic-deman...> WP Engine's lawsuit points to promises made by Mullenweg and Automattic nearly 15 years ago. "In 2010, in response to mounting public concern, the WordPress source code and trademarks were placed into the nonprofit WordPress Foundation (which Mullenweg created), with Mullenweg and Automattic making sweeping promises of open access for all," the lawsuit said.
> Mullenweg wrote at the time that "Automattic has transferred the WordPress trademark to the WordPress Foundation, the nonprofit dedicated to promoting and ensuring access to WordPress and related open source projects in perpetuity. This means that the most central piece of WordPress's identity, its name, is now fully independent from any company."
This sure sounds like Automattic made WordPress - both it's technology and the trademark - free to use. Apparently Automattic basically lied about making WordPress open:
> WP Engine alleges that Automattic and Mullenweg did not disclose "that while they were publicly touting their purported good deed of moving this intellectual property away from a private company, and into the safe hands of a nonprofit, Defendants in fact had quietly transferred irrevocable, exclusive, royalty-free rights in the WordPress trademarks right back to Automattic that very same day in 2010. This meant that far from being 'independent of any company' as Defendants had promised, control over the WordPress trademarks effectively never left Automattic's hands."
It's possible that Automattic's trademark claims are not valid. Trademark claims become weaker if companies don't actively defend the use of their trademark. Even if the secret revocation of its permission to use the WordPress trademark is real, the fact that they've ignored 15 years of WP Engine's use of the trademark really weakens their case.