RPX reported two weeks ago that inventor Alan Loudermilk had joined Caddo Systems, Inc. as a director, in possible preparation to assert the patents of Armin Moehrle. Loudermilk is also one of two named directors for 511 Innovations, Inc., an entity actively engaged in the enforcement of Loudermilk patents, most recently against Apple. Indeed, Caddo Systems and 511 Technologies, Inc.—another entity controlled by Loudermilk—have now teamed up to assert five of those Moehrle patents (7,191,411; 7,216,301; 7,640,517; 7,725,836; 8,352,880), suing Delta Airlines (2:16-cv-00925), Internet Brands(2:16-cv-00927), Southwest Airlines (2:16-cv-00926), and Tencent (Zam Network) (2:16-cv-00928) in the Eastern District of Texas. The defendants’ website navigation systems are accused of infringement.

511 Innovations, Inc., an inventor-controlled NPE, has added a case against Apple (2:16-cv-00868) to the campaign that it began last September by filing three complaints that named one or more mobile phone manufacturers with a semiconductor supplier: HTC with Vishay Intertechnology (2:15-cv-01524); Huawei, Samsung, and ZTE with AMS (2:15-cv-01526); and Microsoft with Avago (2:15-cv-01525). Of the eight optical measurement patents (6,307,629; 6,490,038; 6,915,955; 7,110,096; 7,113,283; 7,397,541; 8,472,012; 8,786,844) that 511 has asserted in the campaign, Apple is accused of infringing five (the ‘629, ‘096, ‘541, ‘012, and ‘844 patents) through the manufacture and sale of mobile phones, with only the iPhone 4 identified specifically.