Hierarchical Menu Navigation Campaign Sees Fresh Suits After Several Years’ Hiatus

March 27, 2020

Caddo Systems, Inc., as owner of the asserted patents, and exclusive licensee 511 Technologies, Inc. have filed another round in a litigation campaign over a family of patents generally related to hierarchical menu navigation. The newest defendants are MediaTek (6:20-cv-00241), Microchip (6:20-cv-00245), NXP (6:20-cv-00244), and Siemens (4:20-cv-00255), each accused of infringement through the provision of nested menu systems for navigating product platforms and/or company websites. The plaintiffs began this campaign in 2016, with the last open cases closing in mid-2017.

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