723 F.Supp.3d 640
N.D. Ill.2024Background
- Kenall Manufacturing sued Cooper Lighting (and Eaton Corp.) for alleged patent infringement and breach of a 2007 license agreement resolving a prior dispute related to Kenall’s modular lighting patents.
- Under the 2007 Agreement, Cooper was licensed to manufacture and sell certain Kenall-patented lighting products (the “Subject Products”) in exchange for royalty payments and other obligations, including reporting sales and marking products with patent notices.
- The Agreement barred Cooper from contesting infringement, validity, or enforceability of Kenall’s patents for the Subject Products (a “No Challenge Clause”).
- Disputes arose over Cooper’s allegedly unauthorized sales after the license expired for certain products, failure to pay royalties, failure to mark products, and whether Kenall could recover additional damages (including reputational and convoyed sales damages).
- Fact and expert discovery was extensive and contentious, culminating in cross-motions for partial summary judgment and motions to exclude expert testimony.
Issues
| Issue | Plaintiff's Argument | Defendant's Argument | Held |
|---|---|---|---|
| Patent infringement by post-2008 sales | Sales after license expiration infringe protected patents | Kenall needed to prove infringement with expert testimony | Kenall wins; summary judgment for Kenall—sales infringe due to No Challenge Clause |
| Breach of contract by post-2008 sales | Selling after expiration was a breach; implied negative covenant | Contract silent; no implied negative covenant | No breach; court refuses to imply a covenant; claim dismissed |
| Failure to mark—reputational damages | Failure caused reputational harm, supporting damages | Damages too speculative; reputational damages not recoverable | No recovery; reputational damages not available in contract claims |
| Failure to mitigate contract damages | No duty absent actual knowledge of breach; acted reasonably | Kenall failed to act for years despite clear contract terms | Kenall failed to mitigate; recovery on these damages barred |
| Convoyed sales damages | Accessories are functionally linked, so convoyed sales count | No functional unit; evidence insufficient | Evidence insufficient; summary judgment for defendant |
| Willfulness of infringement | Cooper acted with knowledge and worked around the agreement | Cooper took steps to avoid infringement, or believed it did | Disputed facts; summary judgment denied to both sides |
| Exclusion of expert testimony | Cooper’s/Lewis’/Ricca’s/Conroy’s testimony improper for various reasons | Testimony proper/rebuttal, flaws go to weight not admissibility | Most testimony allowed, some testimony limited where barred by prior rulings |
| Untimely disclosures (documents/damages) | Supplementing damages calc. and documents was justified | Kenall’s disclosures and production were untimely and prejudicial | No bar or sanction; defendant was on notice, no prejudice, and no bad faith shown |
Key Cases Cited
- Anderson v. Liberty Lobby, Inc., 477 U.S. 242 (1986) (summary judgment standard)
- Daubert v. Merrell Dow Pharmaceuticals, Inc., 509 U.S. 579 (1993) (standards for admissibility of expert testimony)
- Halo Elecs., Inc. v. Pulse Elecs., Inc., 579 U.S. 93 (2016) (willful patent infringement and enhanced damages)
- St. George Chicago, Inc. v. George J. Murges & Assocs., Ltd., 695 N.E.2d 503 (Ill. App. Ct. 1998) (duty to mitigate contract damages)
- Beraha v. Baxter Health Care Corp., 956 F.2d 1436 (7th Cir. 1992) (implied covenants rare in Illinois contract law)
- Rite–Hite Corp. v. Kelley Co., Inc., 56 F.3d 1538 (Fed. Cir. 1995) (convoyed sales damages in patent suits)
- Am. Seating Co. v. USSC Grp., Inc., 514 F.3d 1262 (Fed. Cir. 2008) (functional unit test for convoyed sales)
- Crystal Semiconductor Corp. v. TriTech Microelectronics Int’l, Inc., 246 F.3d 1336 (Fed. Cir. 2001) (lost profits and price erosion are linked in patent damages)