The lawsuit is not the first Facebook has filed this year against a Hong Kong company.
TikTok has hired away more than two dozen employees from Facebook since 2018.
The case is the latest in a series of offensives against Chinese companies found to be injecting malware in apps for financial gain.
Tik Tok was downloaded more than Facebook in the US last month.
Facebook said that it would “carefully” consider privacy and free expression.
At 663 million downloads in 2018, TikTok surpassed Instagram and is catching up to Facebook.
The app has seen its installs increase by 237% year-on-year.
In the discussion, specific mention was made of ZTE and Huawei.
The founding team of Renren has finally decided to let go of their efforts to restore the platform to its former glory, leaving the fate of the site in the hands of users and partners instead.