Karetek Holdings patent challenged as likely invalid

On October 1, 2020, Unified filed a petition for inter partes review (IPR) against U.S. Patent 7,373,515, owned by Karetek Holdings LLC, an NPE and an IP Edge entity. The ‘515 patent is generally directed to a method of multi-factor authentication. Karetek has asserted the ‘515 patent against RetailMeNot, Golds Gym, HelloFresh, PetSmart, Alamo Drafthouse Cinemas, and others.

View district court litigations by Karetek Holdings. To read the petition and view the case record, see Unified’s Portal. Unified is represented by Wilson Sonsini and by in-house counsel, Jordan Rossen and Ashraf Fawzy, in this proceeding.