British boy band One Direction has filed a countersuit against an American group also known as One Direction.
In April, the Americans filed a $1 million trademark lawsuit against the Brits, claiming they were "causing confusion".
But Simon Cowell's record label Simco and Sony Music Entertainment countersued claiming America's One Direction has "devised and perpetrated a scheme to exploit the goodwill" of the UK's One Direction. The suit claims the Brits are the real ones under the "threat of consumer confusion".
In the original lawsuit, the American One Direction said it had been selling its album, "The Light", on iTunes since 2011. This was before the UK One Direction released its own album, "Up All Night", in America.
But Simon's label claims the UK One Direction have been using their name since the group made its public debut on the British version of The X Factor in 2010. That extended to the US, including registration of onedirectionmusic.com, a Twitter account and a Facebook page.
Attorneys for the UK band also say music videos were put up on YouTube that circulated worldwide starting in 2010. Three months later, the UK group posted more than 30 videos in the US. Simon's countersuit also claims that the US band knew about the Brits way back then.