Supplemental Jurisdiction and the Erie Doctrine
"While Erie questions arise most frequently in diversity cases, the Supreme Court has made clear that the doctrine applies equally to state law claims like Houben's that are brought to the federal courts through supplemental jurisdiction under 28 U.S.C. § 1367." Houben v. Telular Corp. 309 F.3d 1028 1032 (7th Cir. 2002) (citing Felder v. Casey, 487 U.S. 131, 151 (1988)). "This Court recognizes that it must apply the Erie doctrine to state law claims before the Court pursuant to its supplemental jurisdiction." Highland Tank & Mfg. Co. v. PS International, Inc., 393 F. Supp.2d 348, 352 (W.D.Pa. 2005) (deciding discovery motions in case with federal claims for patent and copyright infringement and supplemental state claims for trade secret misappropriation).