The U.S. government is asking a federal appeals court to rehear a challenge to a Food and Drug Administration requirement that tobacco companies to put large graphic health warnings on cigarette packages to show that smoking can disfigure and even kill people.

The Justice Department filed a petition Tuesday asking for the full court to rehear the case after a three-judge panel of the U.S. Court of Appeals in Washington affirmed in August a lower court ruling blocking the mandate, saying it ran afoul of the First Amendment's free speech protections. However, the court rarely grants such appeals.

Some of the nation's largest tobacco companies, including R.J. Reynolds Tobacco Co., sued to block the mandate to include warnings to show the dangers of smoking and encouraging smokers to quit lighting up. They argued that the proposed warnings went beyond factual information into anti-smoking advocacy. The government argued the photos of dead and diseased smokers are factual.