The lawsuit was filed in the US federal court in Chicago by Rude Music Inc., the music publishing company owned by Frank Sullivan, who composed the song and copyrighted it in 1982.
The lawsuit states that as early as 2009, Gingrich has entered rallies and public events to the pulsing guitar riffs of the song, which was the background track to Rocky Balboa's training montages in the film and became a No. 1 hit.
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The suit asks for an injunction to prevent Gingrich from using the song, as well as damages and lawyers' fees to be determined by
the court.

