D. Colorado September 2001 casesBig O Tires, Inc. v. Bigfoot 4X4, Inc.In re SpadeHarbert v. Healthcare Services Group Inc.Big O Tires, Inc. v. Bigfoot 4 × 4, Inc.U.S. ex Rel. Ridenour v. Kaiser-Hill CompanyMicro Chemical Inc. v. Lextron Inc.Varga v. RumsfeldIn re Parsons