85 F.4th 1365
Fed. Cir.2023Background
- Malvern sued Waters for infringement of U.S. Pat. Nos. 8,827,549 and 8,449,175, which disclose an isothermal titration calorimeter (ITC) with an automatic pipette assembly and a claimed “pipette guiding mechanism.”
- The patents describe two embodiments of a guiding mechanism (guide rod with groove and an external guide sleeve) but do not state whether the guiding mechanism is manual or automatic.
- During separate prosecution of an unrelated but commonly owned ’782 patent, the applicant argued (unsuccessfully) that a prior reference disclosed only a manual guiding mechanism; those prosecution documents were later listed, without explanation, in an IDS submitted during supplemental examination of the ’175 patent.
- The district court construed “pipette guiding mechanism” as limited to a “mechanism that manually guides the pipette assembly,” relying in part on the ’782 prosecution history, and the parties then stipulated to non‑infringement.
- The Federal Circuit reversed: it held the term’s plain and ordinary meaning is a mechanism that guides the pipette assembly either manually or automatically, ruled the district court erred in treating the term as a coined term and in relying on the bare IDS citation to the unrelated ’782 prosecution history, vacated the judgment, and remanded.
Issues
| Issue | Plaintiff's Argument (Malvern) | Defendant's Argument (Waters) | Held |
|---|---|---|---|
| Proper construction of “pipette guiding mechanism” | Broad plain meaning: a mechanism that guides the pipette assembly, manual or automatic | Limit to mechanisms that manually guide the pipette assembly | Term construed broadly to cover manual or automatic guidance |
| Whether the term is a “coined” term requiring limitation to specification | Not a coined term; ordinary meaning governs | Term is coined and must be limited to specification disclosure | Not a coined term in context; ordinary meaning applies |
| Use of unrelated ’782 prosecution history (listed in IDS) to limit claim scope | Listing in IDS is insufficient to import or adopt the ’782 prosecution statements into intrinsic record | IDS listing of ’782 office actions supports considering those prosecution statements | Bare listing in IDS does not incorporate or justify reliance on the ’782 prosecution history to limit claim scope |
| Whether prosecution disclaimer occurred from ’782 prosecution statements | No clear and unambiguous disavowal; applicant abandoned the limiting argument, so no disclaimer | Applicant’s statements during ’782 prosecution show they limited the term to manual mechanisms | No unambiguous prosecution disclaimer; statements were contested and abandoned, so they do not limit claims |
Key Cases Cited
- Phillips v. AWH Corp., 415 F.3d 1303 (Fed. Cir. 2005) (en banc) (claim construction principles; intrinsic evidence governs)
- Hill‑Rom Servs., Inc. v. Stryker Corp., 755 F.3d 1367 (Fed. Cir. 2014) (plain claim language may support broad construction despite specific embodiments)
- Indacon, Inc. v. Facebook, Inc., 824 F.3d 1352 (Fed. Cir. 2016) (terms lacking ordinary meaning ordinarily limited to specification)
- Iridescent Networks, Inc. v. AT&T Mobility, LLC, 933 F.3d 1345 (Fed. Cir. 2019) (coined term of degree discussion)
- Goldenberg v. Cytogen, Inc., 373 F.3d 1158 (Fed. Cir. 2004) (narrow view of using related patent prosecution history absent incorporation)
- Ecolab, Inc. v. FMC Corp., 569 F.3d 1335 (Fed. Cir. 2009) (abandoned or unsuccessful prosecution arguments do not create disclaimer)
- Omega Eng'g, Inc. v. Raytek Corp., 334 F.3d 1314 (Fed. Cir. 2003) (prosecution disclaimer requires clear, unambiguous disavowal)
- In re Papst Licensing Digital Camera Pat. Litig., 778 F.3d 1255 (Fed. Cir. 2015) (court may refine claim construction on remand)