Taylor Swift wins sexual assault case against US radio DJ

A six-day court battle has concluded with US radio personality David Mueller being found guilty of sexually assaulting pop star Taylor Swift in 2013.

The 'I Knew You Were Trouble' hitmaker claimed the DJ had grabbed her behind during a photo opportunity at KYGO, the radio station he was working at.

Mueller had taken Swift to court seeking up to US$3 million in damages, saying her allegations had cost him his reputation and his job, as he was fired after they came light.

However, Swift countersued for assault and battery, asking for just US$1 - and won, with the jury ruling there was sufficient evidence of Mueller's wrongdoing.

They also dismissed claims that Swift's mother Andrea and publicist Franks Bell interfered with Mueller's contract with Lincoln Financial, who own KYGO radio station.

Swift was awarded her US$1 in damages, with her attorney explaining its meaning in his closing arguments.

"The one dollar I ask you to award her is of immeasurable value. It means 'no means no'," he said.

Newshub.