SAN JOSE, Calif.--(BUSINESS WIRE)--Ultratech, Inc. (Nasdaq: UTEK) a leading supplier of lithography, laser-processing and inspection systems used to manufacture semiconductor devices and high-brightness LEDs (HB-LEDs), announced today that it has filed a lawsuit in federal court in the Northern District of California against Chinese-based company Ensure NanoTech (Beijing), Inc. and its United States subsidiary (“Ensure”) and company President Dongjun Wang. The complaint alleges that Dongjun Wan