SonoSite amends GE patent infringement suit

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SonoSite reported that it has filed an amendment to its patent infringement lawsuit against General Electric and certain of its affiliates in the U.S. District Court for the Western District of Wisconsin. The lawsuit and the amendment are filed as a counterclaim to the complaint GE and its affiliates filed against SonoSite on May 15 this year in the same court.

In its original counterclaim complaint, the Bothell, Wash.-based SonoSite asserted that GE and its affiliated companies infringe SonoSite’s U.S. Patent Nos. 6,569,101, “Medical Diagnostic Instrument with ECG Module, Authorization Mechanism and Methods of Use,” and 5,817,024, “Handheld Ultrasonic Diagnostic Instrument with Digital Beamformer.”

In its amendment, SonoSite asserts that GE and its affiliated companies also infringe SonoSite’s U.S. Patent Nos. 6,962,566, “Medical Diagnostic Ultrasound Instrument with ECG Module, Authorization Mechanism and Methods of Use,” and 6,364,839, “Ultrasound Diagnostic Instrument Having Software in Detachable Scanhead.”

SonoSite said that GE and its affiliated companies infringe its patents through their sales of ultrasound products, including sales of their Vivid and Logiq compact products and certain transducers and GE’s Vivid 7 cart-based system.

The complaint seeks unspecified monetary damages and a court injunction against future infringement by GE and its affiliates.