358 F. Supp. 3d 761
N.D. Ill.2019Background
- Plaintiff sued alleging infringement of patents covering a combined stylus/writing cartridge; defendants raised numerous invalidity and unenforceability contentions.
- The parties filed a 36-page Joint Motion outlining discovery disputes about adequacy of plaintiff’s claim charts under the Local Patent Rules (LPRs).
- The court encouraged further meet-and-confer; parties resolved most disputes, leaving contested issues limited to interpretation of LPR 3.1 (Final Unenforceability and Invalidity Contentions).
- LPR 3.1, as amended, caps invalidity defenses: four prior-art grounds and four non-prior-art grounds per patent/claim (with other numerical limits elsewhere).
- Defendants listed 37 specific instances across patents but characterized them as supported by only three non-prior-art grounds (indefiniteness, lack of enablement, lack of written description); plaintiff argued each instance was a separate ground violating LPR 3.1.
- The magistrate analyzed rule text and precedent and concluded LPR 3.1 limits grounds, not the number of supporting examples or discrete term-by-term proofs a defendant may assert for a permitted ground.
Issues
| Issue | Plaintiff's Argument | Defendant's Argument | Held |
|---|---|---|---|
| Scope of LPR 3.1 numerical limits | Each of defendants’ listed instances (19 and 18) are separate and distinct grounds; limits were exceeded | Rule limits grounds but permits multiple supporting reasons/examples per ground; no limit on number of terms argued under a single ground | LPR 3.1 limits categories of grounds (e.g., indefiniteness) to four non-prior-art grounds; it does not limit the number of terms/examples used to prove a permitted ground |
| Whether discrete term-based allegations count as separate grounds | Term-specific allegations should count as separate grounds | Term allegations are examples of a ground (e.g., indefiniteness) and do not multiply the grounds | Termwise allegations are supporting instances, not independent grounds; pointing to many terms does not violate LPR 3.1 |
| Court’s authority to further narrow invalidity contentions | (implicit) Court may only enforce the Rule as written | Court can exercise case-management discretion to streamline complex patent disputes | Court recognized its case-management power but applied the textual meaning of LPR 3.1; it did not further trim defendants’ examples here |
| Remedy for alleged boilerplate or evasive disclosures | Plaintiff sought limitation or sanction for purportedly evasive contentions | Defendants argued their final contentions are permissible under the Rule | Court reiterated that boilerplate/evasive disclosures are disallowed generally, but found defendants’ contentions compliant with LPR 3.1’s numerical limits |
Key Cases Cited
- U.S. v. Loggins, 486 F.3d 977 (7th Cir.) (discussing discovery’s role in preventing trial by ambush)
- U.S. ex rel. Robson v. Oliver, 470 F.2d 10 (7th Cir.) (discovery facilitating truthful resolution)
- Procter & Gamble Co. v. United States, 356 U.S. 677 (Supreme Court) (purpose of discovery/administration of justice)
- Keranos, LLC v. Silicon Storage Tech., Inc., 797 F.3d 1025 (Fed. Cir.) (district court case-management authority in patent cases)
- Grennier v. Frank, 453 F.3d 442 (7th Cir.) (textual interpretation principle)
- Chevron U.S.A. Inc. v. Natural Resources Defense Council, Inc., 467 U.S. 837 (Supreme Court) (statutory interpretation framework)
- Caminetti v. United States, 242 U.S. 470 (Supreme Court) (textualist approach to interpretation)
- Taylor v. Illinois, 484 U.S. 400 (Supreme Court) (trial management and sanctions jurisprudence)
- Seymour v. Osborne, 78 U.S. 516 (Supreme Court) (abuse of invalidity defenses by overwhelming with references)
- Roche Palo Alto LLC v. Apotex, Inc., 526 F. Supp. 2d 985 (N.D. Cal.) (defining grounds such as indefiniteness, enablement, written description)