TikTok on Monday pushed back against a law that would force the popular video app to sell to a non-Chinese owner or be banned, in what is shaping up to be a landmark case.

TikTok on Monday pushed back against a law that would force the popular video app to sell to a non-Chinese owner or be banned, in what is shaping up to be a landmark case.

© Michael A. McCoy for The New York Times

TikTok on Monday pushed back against a law that would force the popular video app to sell to a non-Chinese owner or be banned, in what is shaping up to be a landmark case.

© Michael A. McCoy for The New York Times

TikTok will be in federal court on Monday, aiming to block a new law that will ban the popular video app in the United States early next year.

In its first detailed response to a legal challenge, the agency said TikTok’s proposed changes wouldn’t prevent China from using it to collect U.S. users’ data or spread propaganda.