Roots in a 2016 Filing
Promptu first sued Comcast in 2016, alleging infringement after meetings between the companies about Promptu’s voice-recognition technology. Three patents were initially in play, but one—U.S. Patent No. RE44,326—was later dismissed with prejudice.
For the remaining patents, the Federal Circuit had already weighed in on related administrative proceedings. It upheld a Patent Trial and Appeal Board ruling that some claims of the ’196 patent were invalid, while affirming that Comcast failed to prove any claims of the ’538 patent invalid.
The Lawyers Behind the Battle
Promptu is represented by David V. Dzara and Brett A. Datto of Weir LLP, along with a large Finnegan Henderson team including Schroeder, Jinwoo Kim, Gerald F. Ivey and others.
Comcast’s defense team includes Stephen J. Kastenberg and David L. Axelrod of Ballard Spahr LLP, joined by Douglas E. Lumish, Mark A. Perry and Jeff A. Homrig of Weil Gotshal & Manges LLP.
