CallWave Communications (listed incorrectly in PACER as CallWave Communication singular) filed suits against four mobile carriers: AT&T, Sprint Nextel, T-Mobile, and Verizon alleging that mobile services related to voice, mapping and commerce technology supplied by Google infringe a number of patents. (Google is named as a co-defendant in each of the four suits.) Two patents are asserted in the suits against all five defendants. The first, a patent related to locating a mobile subscriber, originated with Locationet and was previously available on the open market in 2011 (LocationNet). The second patent, related to call billing, was previously assigned to online video conferencing provider, Fuzebox. In July 2012, Fuzebox announced that it had raised $20M in Series A funding. At the time, media sources also reported that Fuzebox was spinning out its patent portfolio for monetization as CallWave.  (CallWave was the former name of Fuzebox.) Additional Fuzebox/CallWave patents are asserted in the cases against three of the carriers. The AT&T complaint also includes two additional patents, the Sprint complaint one, and the Verizon suit one more. These four additional patents also originated from Fuzebox. 12/12, District of Delaware, 1:2012cv01701; 1:2012cv01702; 1:2012cv01703; 1:2012cv01704.