On October 4, 2017, Unified, represented by Erise IP, filed a petition for inter partes review (IPR) against U.S. Patent 6,820,807 owned and asserted by Kaldren LLC, a subsidiary of IP Edge, a well-known NPE. The '807 patent, which discloses a method of formatting digital data into an encoded pattern onto a physical substrate, has been asserted in 38 district court cases since March 2017 (~ 6 new cases/month). The following companies are still in litigation with Kaldren over the '807 patent. 

Embraer Executive Jet Services, LLC
Edwards Lifesciences Corporation
Skyworks Solutions, Inc.
Express Scripts Holding Company
Denbury Resources Inc.
Wausau Paper Corp.
Madison Gas and Electric Company
La Crosse Technology, Ltd.
Rust-Oleum Corporation
Blue Cross and Blue Shield of Texas, Inc.
Stemco LP
Trippe Manufacturing Company
The Hain Celestial Group, Inc.
Cigna Corporation
 

The Northwestern Mutual Life Insurance Company
Woodway USA Inc
Western States Envelope Company
Anixter, Inc.
Signode Industrial Group LLC
Marinette Marine Corporation
Medline Industries, Inc.
PNY Technologies, Inc.
Kik US, Inc.
Snap, Inc.
HSBC USA, Inc.
Pioneer Electronics (USA), Inc.
CitiGroup, Inc.

To read the petition and view the entire case proceeding, visit our PTAB Portal.