 In 2006 Textron sued IAIO, for producing counterfeits of six types of its Bell unit helicopters without licenses thereby using trade secrets and patented designs without permission and demanded compensation for damages.In another lawsuit (Bell Helicopter Textron Inc. v. Islamic Republic of Iran, Case No.06cv1694, in U.S. District Court for the District of Columbia) brought by Iran against Textron earlier, Iran had sought damages against unfulfilled contracts dating back before revolution.