Grammy-winning producer Pharrell Williams and Robin Thicke have reportedly lost a legal battle against late music icon Marvin Gaye‘s family over their summer 2013 hit, “Blurred Lines.”

According to reports, a California judge ruled against the music duo and suggested they may have borrowed elements of Gaye’s “Got to Give It Up” for their smash single.

In a ruling that could set up one of the biggest trials ever over alleged song theft, U.S. District Judge John Kronstadt on Thursday denied Pharrell Williams and Robin Thicke’s motion for summary judgment in a lawsuit that explores the origins of the blockbuster hit “Blurred Lines.” (Billboard)

Check out what the judge said about his decision…

The California judge credited Gaye’s family for pointing out specific conflicting factors.

The end result is Judge Kronstadt’s conclusion that the case shouldn’t end now. The Gaye family, he writes, “have made a sufficient showing that elements of ‘Blurred Lines’ may be substantially similar to protected, original elements of ‘Got to Give It Up.’ Defendants have identified these with particularity for purposes of analytic dissection.” (Billboard)

Barring any changes, the trial will go down in February 2015.

Kronstadt’s ruling on Thursday noted the similarity of various hooks in both songs, bass lines, keyboard parts, vocal lines and elements of both songs’ melodic and harmonic composition. A trial has been set for Feb. 10, 2015. (Los Angeles Times)