418 F. App'x 914
Fed. Cir.2011Background
- Sanders and Specialty Fertilizer Products, LLC sued Mosaic for infringement of the ’459 patent.
- The district court construed key terms, including “soil nutrient composition” and “composite comprising a self-sustaining body,” with a high-concentration micronutrient limitation and a non-stratified homogeneous product limitation.
- The court held “comprising … a micronutrient” to have plain meaning and rejected broad high-concentration limitations.
- Mosaic was allowed to amend its pleadings to add a counterclaim of inequitable conduct under Exergen standard.
- A stipulated noninfringement judgment was entered; the appeal challenges claim construction and upholds the inequitable conduct pleading on remand.
Issues
| Issue | Plaintiff's Argument | Defendant's Argument | Held |
|---|---|---|---|
| Is the “high-concentration micronutrient” limitation a proper scope bound on the claims? | Sanders disclaimed high concentration during prosecution to distinguish Bexton. | Mosaic argues prosecution history supports limiting to high-concentration micronutrients. | No clear and unmistakable disclaimer; claims not limited to high concentration. |
| Does prosecution disclaimer limit the claims to non-stratified, non-stratefied homogeneous products? | Sanders’ statements during parent prosecution imply non-stratified homogeneous products. | The claims themselves are not so limited; disclaimer not unambiguous. | No clear disclaimer limiting to non-stratified homogeneous products. |
| What is the proper construction of “soil nutrient composition” and “composite comprising a self-sustaining body”? | Plain language includes micronutrients and is not limited to high concentration or specific structure. | Disclosures imply limits to high concentration and non-stratified products. | Plain meaning applies; not limited to high concentration or non-stratified products. |
| Should the term “mixture” in the claimed phrase be construed beyond the listed elements? | Mixture should be limited to the listed ingredients. | Mixture need not be limited to the listed items; may include other components. | “Mixture” not further constrained beyond requiring listed ingredients. |
| Did the district court abuse its discretion in allowing Mosaic to amend to add inequitable conduct? | Inequitable conduct pleading lacked knowledge and intent details. | Pleadings plausibly allege knowledge and intent to deceive; sufficient under Exergen. | Court did not abuse discretion; amendment proper; remand to adjudicate inequitable conduct. |
Key Cases Cited
- Phillips v. AWH Corp., 415 F.3d 1303 (Fed. Cir. 2005) (claim construction based on intrinsic evidence; lexicography and ordinary meaning)
- CIAS, Inc. v. Alliance Gaming Corp., 504 F.3d 1356 (Fed. Cir. 2007) (plain meaning and inclusion language for “comprising”)
- Exergen Corp. v. Wal-Mart Stores, Inc., 575 F.3d 1312 (Fed. Cir. 2009) (pleading inequitable conduct under Rule 9(b) standard)
- Refac Int’l, Ltd. v. Lotus Dev. Corp., 81 F.3d 1576 (Fed. Cir. 1996) (duty to disclose affiliations can support inequitable conduct)
- Omega Eng’g, Inc. v. Raytek Corp., 334 F.3d 1314 (Fed. Cir. 2003) (limitations on prosecution history disclaimer applicability)