On June 21, 2013 Aisin Seiki Co., Ltd. filed IPR2013-00380 on U.S. Patent No. 7,413,048 on Weight Measuring Systems and Methods for Vehicles; IPR2013-00382 on U.S. Patent No. 7,976,060 on Seat Load or Displacement Measuring System for Occupant Restraint System Control; and IPR2013-00383 on U.S. Patent No. 8,235,416 on Arrangement for Sensing Weight of an Occupying Item in a Vehicular Seat. Taiwan Semiconductor Manufacturing Company filed IPR2013-00381 on U.S. Patent No. 7,485,968 on 3D IC Method and Device.