Fortnite maker Epic Games is taking augmented reality company Nreal to court, claiming it is in violation of its trademark.

As reported by The Verge, Epic's lawyers claim – you guessed it – that Nreal sounds too similar to its own Unreal Engine branding. In the lawsuit, the Fortnite firm says that this is an intentional act. This lawsuit also follows Epic opposing Nreal registering this trademark in the United States, which has resulted in "protracted settlement talks [that] have been fruitless."

"It is no coincidence that Nreal named its glasses after the industry-leading engine for creating immersive and interactive three-dimensional content," Epic's lawyers wrote.

"The developer section of Nreal’s website lists Epic’s Unreal Engine as one of three development platforms to be available for developers to create content for Nreal’s glasses. Nreal was and is well aware of Epic and its Unreal marks. Nreal does not just sell glasses, it has already developed and sold a game to be used with those glasses. Nreal is willfully trading off Epic’s rights, causing confusion, and acting with callous disregard for Epic’s prior rights."

Speaking to Eurogamer, an Nreal spokesperson said that the lawsuit "lacks merit."

"Nreal is an innovative and growing startup that is setting a new standard for augmented reality," they said.

"Recognised as a ground-breaking company among both consumers and developers, Nreal has developed a reputation as the leading hardware manufacturer of mixed reality and augmented reality glasses currently sold in Asia and Europe. We're aware of the litigation that has been filed by Epic. We respect intellectual property rights, but we believe that this lawsuit lacks merit and plan to defend vigorously against the claims brought by Epic."

Epic is, of course, already in the middle of a legal battle with Apple at the moment.