PT Diagnostics [NPE] filed two separate suits against Deutsche Lufthansa and MTU Aero Engines, alleging that MTU’s preventative airplane maintenance products and services infringe four patents related to analyzing data gathered from the operation of airplanes. PT Diagnostics has filed four prior suits since December 2011. 1/23, Eastern District of Texas, 2:2012cv00039; 2:2012cv00040.
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