Both sides will offer closing arguments in November. Judge Leonie M. Brinkema, who is presiding over the case, is expected to reach a decision in the coming months.
Earlier efforts to find a new, non-Chinese owner for the popular video app fell apart. A federal law that cites national security issues requires TikTok owner ByteDance to sell it or face a ban.
Trump administration officials say they have the framework of a deal to save the popular video app. It had until Sept. 17 to be sold by its Chinese owner, ByteDance, or face a ban in the United States.