KINGSPORT, TN, March 2, 2010- Eastman Chemical Company (NYSE:EMN) filed a lawsuit against DAK Americas LLC in connection with their unauthorized use of IntegRexTM PET technology. Eastman developed the innovative IntegRexTM technology for the production of PET, and continues to protect this technology with a robust patent portfolio. Eastman will vigorously defend these intellectual property assets.

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