Records show a judge granted Seymour's request for a three-year order after a hearing Tuesday in Santa Monica.
Her attacker, Janice Thibodeaux, pleaded guilty last week to misdemeanor battery. She was sentenced to three years of probation.
She was arrested in May after police say they saw her choke Seymour, who is "Idol" judge Simon Cowell's ex-girlfriend, after the show's finale.
Thibodeaux claimed she choked Seymour as retaliation for Cowell playfully choking fellow judge Simon Cowell on the show a week earlier.
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