FOSS Patents writes:
In February, Apple brought a new U.S. federal lawsuit against Samsung, the second of its kind in the Northern District of California. Late on Wednesday by local time, Samsung brought its answer to the complaint as well as infringement counterclaims over eight patents.
Two of those patents are FRAND-pledged patents that Samsung declared essential to ETSI standards. Five of the patents (including the two FRAND patents) were originally applied for by Samsung, while three others were acquired (one from Hitachi, one from a group of three inventors). Also, Samsung’s complaint states for two of the patents that Apple was shown “detailed explanation[s]” of infringement (presumably that means claim charts) in October 2010. One of those two patents was previously asserted against Apple but then withdrawn from the first California litigation between these companies.