A patent troll has launched an action against eight LMS companies. IPLearn holds US Patent 5,967,793, 'Relationship-Based Computer-Aided-Educational System', which describes a way for students to learn a new subject based on its relationship to subjects they already know (in other words, what we generally call 'adaptive learning'). The companies named include Learn.com, Certpoint Systems, Meridian Knowledge Solutions, emTRAiN, HRsmart, and NetDimisions. Via Masie.
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