 Fortress Investment Group backed a German patent troll, non-manufacturing entity IPCom GmbH & Co. KG, notorious for suing Nokia for patent infringement for $17.77 billion in 2008.Many of IPCom's patents have been invalidated by the courts and millions of dollars have been incurred in legal costs.On March 9, 2020, Fortress Investment, through its non-operating subsidiary Labrador Diagnostics which was incorporated on March 6, 2020, used intellectual property patents acquired from the now defunct company Theranos to sue BioFire Diagnostics, a health startup owned by BioMérieux, in an attempt to extract money through patent trolling.