Sloan Valve Co. v. Zurn Indus., Inc., No. 10 C 204, Slip Op. (N.D. Ill. May 4, 2010) (St. Eve, J.).

Judge St. Eve granted in part plaintiff/counter-defendant Sloan’s Fed. R. Civ. P. 12 motions in the patent infringement case involving a flush valve handle assembly. The Court dismissed defendant/counter-plaintiff’s (collectively "Zurn") invalidity and noninfringement counterclaims to the extent they challenged patent claims other than those identified as allegedly infringed in Sloan’s complaint. The Court could have exercised jurisdiction over the counterclaims if Zurn had met the MedImmune standard independently for each of Sloan’s unasserted claims, but Zurn did not.

The Court denied Sloan’s Fed. R. Civ. P. 12(b)(6) motion to dismiss Zurn’s inequitable conduct counterclaim. Zurn met the materiality standard by pleading that Sloan should have known that admissions made in a prior, related reexamination proceeding were relevant to the Examiner in the later application. 

The Court dismissed Zurn’s estoppel and misuse affirmative defenses. Each were pled in a single sentence and without particularized facts.

The Court also dismissed Zurn’s lack of actual notice affirmative defense. Zurn also denied Sloan’s actual notice allegation in its answer. Because actual notice was denied in the answer, it was not a proper affirmative defense. Finally, the Court dismissed Zurn’s noninfringement and exceptional case affirmative defenses.  Neither was a proper affirmative defense.