Taylor Swift groper found guilty of sexual assault

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 ($4.11 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 ($1.37) - and won, with the jury ruling there was sufficient evidence of Mueller's wrongdoing.

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

Swift was awarded the US$1 she sought 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.

A statement released by Swift expressed gratitude to the judge and jury for their decision, and her legal team and fans for their support throughout the trial.

"I want to thank Judge William J Martinez and the jury for their careful consideration, my attorneys for fighting for me and anyone who feels silenced by a sexual assault, and especially anyone who offered their support throughout this four-year ordeal and two-year long trial process," she said.

"I acknowledge the privilege that I benefit from in life, in society and in my ability to shoulder the enormous cost of defending myself in a trial like this.

"My hope is to help those whose voices should also be heard. Therefore, I will be making donations in the near future to multiple organisations that help sexual assault victims defend themselves."