NEW YORK (Reuters) - AT&T Inc was sued on Tuesday for at least $1.35 billion by a Seattle company that accused the telecommunications giant of stealing its patented "twinning" technology, which lets smart devices such as watches and tablets respond to calls placed to a single phone number.
Network Apps LLC said AT&T abandoned joint development and licensing agreements for its technology in 2014 after realizing it would owe a "fortune" in royalties because the market for smart devices was exploding, only to then incorporate the technology a year later in its own product, NumberSync.