AT&T Sued for Infringing Patents Designed to Combat Spoofing

RightQuestion LLC is suing AT&T Inc. and its subsidiaries in a Texas federal district court, claiming that they are infringing its patent rights related to call-authentication technology.

STIR/SHAKEN is “a suite of protocols and procedures intended to combat caller ID spoofing on public telephone networks,” the complaint says. The patents-in-suit also “helps rid the public of fraudulent calls and unwanted robocalls from unscrupulous entities,” the complaint says.

Bjorn Markus Jakobsson is the inventor of the patents-in-suit, the complaint says. But the defendants “use Dr. Jakobsson’s patented inventions, including to implement STIR/SHAKEN on their networks, resulting in the infringement of ...