Amazon Among Retailers Sued for Infringing Patents on LED Light Bulbs

Five major retailers, including Amazon.com Inc. and Walmart Inc., were sued by the University of California over what it called the “existential threat” when foreign manufacturers infringe schools’ patents. Amazon, Walmart, Target Corp., Ikea AB and Bed Bath & Beyond Inc. were accused of infringing four patents related to “filament” LED light bulbs, which use 90% less energy and last many years longer than traditional light bulbs.