Lourie, Circuit Judge.
Praxair Distribution, Inc. ("Praxair") appeals from the inter partes review decision of the United States Patent and Trademark Office Patent Trial and Appeal Board ("the Board") holding claim 9 of U.S. Patent 8,846,112 (the "'112 patent") not unpatentable as obvious under 35 U.S.C. § 103 (2006).
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