Robin Thicke and Pharrell Williams have filed for an appeal over the copyright infringement lawsuit they lost earlier this year (15), when they were found guilty of ripping off a Marvin Gaye song for their 2013 hit Blurred Lines.

In March (15) a California jury ruled the Grammy-nominated hit featured elements of Gaye's 1977 classic Got to Give It Up, and songwriters Thicke and Williams were ordered to hand over $7.3 million (£4.9 million) to the late soul man's family.

Following the judgement, Thicke and Williams stated they would be "reviewing the decision and considering options", and the singers' legal team made a bid for a new trial, but it was subsequently denied in favour of lessening the monetary repercussions.

U.S. District Judge John Kronstadt, who is overseeing the case, agreed to cut the jury's verdict down to $5.3 million (£3.5 million).

Last week (ends06Dec15) a final judgement indicated damages of $3.2 million (£2.1 million) had been awarded to the Gaye family, with Thicke paying an additional $1.8 million (£1.2 million) and Williams an additional $357,631 (£238,421).

Thicke and Williams' attorneys were expected to take the dispute to an appeals court and on Monday (07Dec15), they filed an appeal with the Central District of California, Western Division court, according to documents obtained by The Wrap.