WASHINGTON (Reuters) -The U.S. Supreme Court turned away on Monday a bid to revive a copyright infringement lawsuit accusing pop star Ed Sheeran of unlawfully copying from the late singer Marvin Gaye's 1973 classic "Let's Get It On" in his 2014 hit song "Thinking Out Loud." The justices declined to hear an appeal by Structured Asset Sales, a company owned by investment banker David Pullman that has a copyright interest in Gaye's song, of a judge's decision to dismiss the case. The company had sued Sheeran, his record label Warner Music and music publisher Sony Music Publishing, seeking monetary damages over alleged similarities between the two songs.