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Inventor Jabs Impact Selector With Drilling Patent Suit

Law360 (February 25, 2008, 12:00 AM EST) -- Evans Engineering Inc. and inventor Robert W. Evans have accused rival Impact Selector Inc. of infringing on a patent for oil drilling technology.

Evans and his company lodged the suit Friday in the U.S. District Court for the Southern District of Texas, alleging that Impact Selector's jars – devices that help free equipment that becomes stuck during the oil drilling process – violated their patent.

The suit alleges that Rockwell, Texas-based Impact Selector makes and leases “jar latching system” products that were copied from and infringe...
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