On 31 January, the US International Trade Commission (USITC) started an investigation into Huawei, ZTE, Samsung, and Nokia for alleged patent infringement based on claims by InterDigital (IDCC US, not rated) filed on January 2, 2013. According to Forbes (“US ITC to investigate Samsung, Nokia, Huawei, ZTE for patent infringement”, 1 Feb 2013), the patent infringement lawsuit involves products such as smartphones, data cards, USB dongles, PCs, and other mobile Internet devices with cellular capabilities.
InterDigital is an R&D firm that develops wireless technologies and generates revenue by licensing those patented technologies to third parties. It owns 7.6% of 4G patents according