Metso Sues To Nix Astec Rock Crusher Patent

Law360, New York (October 25, 2010, 3:29 PM EDT) -- Global mining and construction giant Metso Minerals Industries Inc. has taken rival Astec Industries Inc. to court in an attempt to invalidate its patent for a rock crushing machine.

The complaint, filed Friday in the U.S. District Court for the Eastern District of Wisconsin, claims that Astec subsidiary Johnson Crushers International Inc., which specializes in road-building and aggregate processing, has threatened Metso with a patent for a rock pulverizer and demanded that the plaintiff cease manufacturing its HP4 cone crusher.

In July lawyers for Astec notified...
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