IP Bridge, Inc. subsidiary Godo Kaisha IP Bridge 1 has sued Western Digital (1:24-cv-00342) and Seagate Technology (1:24-cv-00341) in separate District of Delaware complaints. Three patents generally related to a “magnetoresistive device comprising a magnetic tunnel junction structure”, based on a magnesium oxide layer, are aimed at the provision of a wide array of memory devices, including “read/write heads” for hard disk drives (HDDs), as well as HDDs incorporating such read/write heads. IP Bridge pleads that Seagate is familiar with the asserted portfolio based on prior litigation in Japan.