Hynix Semiconductor Inc. v. Rambus Inc., 2009 WL 292205 (N.D. Cal. Feb. 3, 2009)
Beginning in 2000, Rambus Inc. (“Rambus”) alleged that several companies had infringed its patents and instituted legal action. Among the companies accused by Rambus were Micron Technology, Inc (“Micron”) and Hynix Semiconductors, Inc. (“Hynix”). In response to the allegations of infringement, both Micron and Hynix filed actions for declaratory judgment in Delaware and California, respectively. Both Micron and Hynix also asserted the unenforceability of the patents and alleged that Rambus had unclean hands as a result of extensive document destruction. In both cases, a bench trial was held on the unclean hands defense.
In January 2006, the California court ruled in Rambus’s favor holding that Hynix’s defense of unclean hands had failed. Hynix Semiconductor, Inc. v. Rambus Inc., 2006 WL 565893 (N.D. Cal. Jan. 5, 2006). In January 2009, the Delaware court ruled in Micron’s favor holding that Rambus had destroyed documents in bad faith and, as a sanction, ordered the patents unenforceable against Micron. Micron Tech., Inc. v. Rambus, Inc., 2009 WL 54887 (D. Del. Jan. 9, 2009).
Based on the ruling of the Delaware court, Hynix moved for summary judgment on the basis of defensive non-mutual issue preclusion or, in the alternative, for reconsideration of the California court’s prior decision regarding Rambus’s actions. Those motions were denied, leaving in place the conflicting rulings of the two courts.