Moreover, outside of the opening phrase, there are almost no similarities between the works, and the phrase in question represents only eleven seconds of a more than three-minute song, the judge wrote.
No reasonable jury would conclude that the compositions have substantial similarities and the average person would not confuse the two songs, the judge wrote.
The original lawsuit was filed in Miami federal court in January on behalf of Lil' Joe Wein Music against Curtis James Jackson, aka 50 Cent. Lil' Joe Wein Music holds the copyright to "It's Your Birthday" and other songs Campbell produced with 2 Live Crew and as a solo artist.
The lawsuit, filed by attorney Richard C. Wolfe, said 50 Cent only changed one word from the opening line of Campbell's song from "It's Your Birthday." After repeating the word "go" several times, "Sheila" becomes "shorty" in the line, "Go shorty, it's your birthday."
Campbell's song appeared on his 1994 solo album "Still a Freak" for Life. None of the parties would comment on the ruling.