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Sub-Zero Aims To Put Freeze On Variant Patent

Law360 (December 17, 2008, 12:00 AM EST) -- Refrigerator manufacturer Sub-Zero Inc. has hit back at patent-holding company Variant Inc., seeking to invalidate a computer-related patent asserted by Variant against Sub-Zero and about 20 other companies.

In a lawsuit filed Monday in the U.S. District Court for the Western District of Wisconsin, Sub-Zero asked for a declaratory judgment that it did not infringe the patent-at-issue. It also asked the court to declare one or more claims of the patent invalid or unenforceable and to award it costs and attorneys' fees.

“Sub-Zero does not make,...
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