“Had Genarlow had intercourse with this girl, had he gotten her pregnant, he could only have been charged with a misdemeanor and punished up to 12 months,” said Brenda Joy Bernstein, Mr. Wilson’s lawyer.

Her client is not eligible for parole, only a reprieve that would not remove his name from the sex offender registry, Ms. Bernstein said.

The prosecutor, David McDade, the district attorney in Douglas County, west of Atlanta, says he has repeatedly offered Mr. Wilson the opportunity to resolve the case with a plea deal, adding that he would have to be treated similarly to the other defendants in the case, who are serving five- to seven-year prison sentences with a chance at parole. They, too, will have to register as sex offenders.

Mr. Wilson is adamant that he will not plead.

“Even after serving time in prison, I would have to register as a sex offender wherever I lived and if I applied for a job for the rest of my life, all for participating in a consensual sex act with a girl just two years younger than me,” he told a reporter for Atlanta magazine last year, adding that he would not even be able to move back in with his mother because he has an 8-year-old sister. “It’s a lifelong sentence in itself. I am not a child molester.”

On New Year’s Eve in 2003, Mr. Wilson and several friends rented a hotel room for a party at which they planned to have plenty of alcohol, marijuana and sex. One friend, goofing around with a video camera, captured much of the action on videotape. A 17-year-old girl reported after leaving the party that she had been gang raped. The tape showed that she was severely intoxicated.

A second girl, 15, also attended the party, but did not drink or smoke. She had what she later said was consensual oral sex with Mr. Wilson. But according to the law, a 15-year-old is below the age of consent. Mr. Wilson went to trial on charges of rape and aggravated child molesting.

After watching parts of the tape, the jury decided that Mr. Wilson had not raped the older girl. But it was bound by law to find him guilty of molesting the 15-year-old. Jurors said afterward they did not know that the charge carried a minimum sentence of 11 years, including 10 without parole.

Juannessa Bennett, Mr. Wilson’s mother, said her son was crushed by the Supreme Court decision.

“We’ve got people that is in power that don’t have no emotions,” Ms. Bennett said. “They don’t sympathize.”