Research Frontiers Files Patent Infringement Lawsuit Against Amazon, Barnes & Noble, E Ink and Sony

Research Frontiers Inc. (Nasdaq: REFR ), the developer and licensor of SPD-Smart light-control technology has filed a lawsuit against E Ink Corporation; E Ink Holdings, Inc. (f/k/a Prime View International Co., Ltd.); Amazon.com (NASDAQ: AMZN ), Inc.; Sony Electronics Inc (NYSE: SNE ).; Sony Corporation; Barnes &