Intellectual Ventures alleged violations of Section 337 of the Tariff Act, which prohibits the importation of infringing goods into the US.
It accused the eight strong list of car manufacturers, which, alongside Toyota and BMW, includes Honda, Mitsuba and Nidec (along with their subsidiaries), of infringing its patents for certain thermoplastic encapsulated electric motors.
The complaint also requests that the USITC institute a limited exclusion order and cease and desist orders.
The USITC will set a target date for completing the investigation within 45 days of institution.
Intellectual Ventures filed parallel patent infringement against the car manufacturers in Delaware last month.