There's been another turn in Automattic and WordPress co-founder Matt Mullenweg's ongoing legal battle with WordPress provider WP Engine. In a counterclaim Automattic filed as part of WP Engine's lawsuit against the company, it claims investment from private equity firm Silver Lake led WP Engine to violate its trademarks and fail to contribute to the open-source WordPress project.Automattic believes that following a $250 million investment from Silver Lake, which gave the firm a controlling interest in WP Engine, the hosting provider "sought to inflate its valuation and engineer a quick, lucrative exit." It allegedly did that, per the counterclaim, by describing itself as the "WordPress Technology Company" and allowing its partners to refer to it as "WordPress Engine," violations of the WordPress trademark. Automattic claims products WP Engine released like "Core WordPress" and "Headless WordPress" further obfuscated the company's role, while WP Engine also failed to commit a promised "five percent of its resources to support the WordPress project."The counterclaim goes on to say that Automattic and Mullenweg tried to work out these issues with WP Engine by offering a "fair trademark license," but the company only "pretended to engage in licensing discussions," while actually delaying any kind of agreement because it would "impact its earnings." Keeping earnings up was important to WP Engine because Silver Lake was allegedly trying to sell WP Engine at a $2 billion valuation, and had even made "overtures to Automattic" about it.