The western state last week became the first in the US to ban the hugely-popular video platform.
TikTok has sued to block the US state of Montana from banning residents from accessing its social media platform.
Monday’s lawsuit comes after last week Montana became the first US state to pass a sweeping ban on the Chinese-owned video-sharing platform.
In a statement, TikTok said the ban conflicts with US free speech rights.
TikTok has come under scrutiny from authorities around the world over concerns that data could be passed to the Chinese government.
The lawsuit filed on Monday in the United States District Court for the District of Montana says it is suing to overturn the « unlawful » ban.
« We are challenging Montana’s unconstitutional TikTok ban to protect our business and the hundreds of thousands of TikTok users in Montana, » a spokesperson said in a statement.
