Copyright Infringement Case

The Avril Lavigne vs. The Rubinoos case involved the songs "Girlfriend" by Avril Lavigne and "I Wanna Be Your Boyfriend" by the Rubinoos. In 2007, The Rubinoos' frontman Tommy Dunbar and co-writer James Gangwer filed suit in U.S. District Court in Northern California against Lavigne, Dr. Luke, RCA records, and Apple Inc. Dunbar said in a statment, "We are not so naive as to chalk it up to some sort of cosmic coincidence, the lyric, the meter, the rhythm...they're identical." In 2008, the case was settled out of court, but Avril Lavigne still claims to be falsely accused.
http://www.thatsongsoundslike.com/2011/08/24/avril-lavigne-vs-the-rubinoos/