That Neil Guy sez, "Writer Leah Petersen received a Cease and Desist notice. Seems the title of her debut novel, Fighting Gravity, is also the name of a live performance group that appeared on America's Got Talent. As Leah writes on her blog, the claim is that 'the title of my science fiction novel about a couple of teenage guys in a romantic relationship is an infringement on the trademark for their black-light, gravity-defying illusion performance group.' Now she gets to pay for a lawyer. Lucky her."
Update: And it's off: "Fighting Gravity To Leah Peterson and her fans: Disregard the cease and desist letter that was issued by our lawyers. Although imitation is the sincerest form of flattery, some people have taken that too far and we have had to deal with it. By no means is Leah Peterson one of those people, our lawyers were just doing their jobs and trying to protect our name and trademark. We wish the best for Leah and hope her book becomes a great success! "