Michael Ortega claims Jackson's song was based on a tune he wrote in 1986, which he played for Jackson songwriters Jimmy Jam and Terry Lewis.
"It's taken a long time to get this to court," Ortega told MSNBC's "The Scoop."
"From what I gather (Jimmy Jam and Terry Lewis) have a pattern of basically, building collages of other people's work for their songwriting," Ortega said.
Ortega alleges copyright infringement and slander in the suit for which he has requested a jury trial.
A spokesman for Jackson did not return calls for comment.