Samsung, Apple Building 4G Patent Portfolios

Samsung Electronics Co. and Apple Inc. are building patent portfolios of fourth-generation mobile-network technology, an area that is likely to become their next battleground over intellectual property. Telecommunications carriers world-wide are upgrading their networks to support more bandwidth for faster Internet access and data downloads on mobile devices. Smartphone makers meanwhile are speeding the rollout of handsets that support long-term evolution 4G technology.