Engle Grange's key fob patent affirmed invalid by Federal Circuit
On April 4, 2023, the Federal Circuit affirmed the Patent Office's final decision, in a summary Rule 36 affirmance, confirmed that U.S. Patent 8,548,645, owned by Engle Grange, LLC, was unpatentable. The ‘645 patent, generally directed towards a two-step key fob authentication system for an automobile, had been asserted in district court litigation against Ford in early 2020.
View district court litigations by Engle Grange. To read the petition and view the case record, see Unified’s Portal. Unified was represented by in-house counsel, David Seastrunk, Roshan Mansinghani, and Michelle Aspen.