TikTok’s Latest Challenge Lies in a Patent-Friendly Texas Court

Add patent lawsuits to the list of headaches for China’s ByteDance Ltd. and its TikTok unit.

The popular video-streaming app has been hit with three patent-infringement lawsuits in a little over a month, including one lodged in late July by Triller Inc., a competitor and potential bidder for TikTok that claims it invented key technology for a way to create synchronized music videos.

The lawsuits have arrived while ByteDance is in talks to sell parts of its TikTok unit in a deal that could be worth tens of billions of dollars.

All three cases were filed in federal court ...