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Uponor Files Patent Infringement Suit Against Sioux Chief

November 6, 2012

Uponor, Inc., a leading supplier of plumbing, fire sprinkler and radiant heating and cooling systems for residential and commercial spaces worldwide, has filed suit against Missouri-based Sioux Chief Manufacturing Company in U.S. District Court for the Northern District of Illinois for infringement of U.S. Patent No. 8,146,225. The patent generally relates to Uponor’s pioneering invention of the ProPEX® Rings with a leading-edge chamfer and integral stop edge.

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