Xiaomi has yet to announce its next-gen flagship smartphones and they are already in trouble. According to the US District Court for the Eastern District of Texas, Blue Spike has filed a patent infringement lawsuit against the Chinese company that includes several Xiaomi's phones.

The two unannounced Xiaomi flagship devices, the Mi 5 and Mi 5 Plus, are also in trouble as they are apparently infringing on patent 8,930,719 B2 titled "Data Protection Method and Device." The rest of the handsets from the lawsuit include the Mi 4, Mi 4 LTE, Mi 4c, Mi 4i, Mi Note Plus, Mi Note Pro, Redmi 1S, Redmi 2, Redmi 2 Prime, Redmi 2 Pro, Redmi 2A and Redmi Note 2.

The company that filed patent infringement lawsuits could be a patent troll, but we can't say much at the moment.