972 F.3d 1350
Fed. Cir.2020Background:
- Patents: U.S. Patent No. 7,914,236 (parent) and U.S. Patent No. 9,284,708 claim screw-type foundation piles with a conical pile tip, an end plate, and optional protrusions (point shaft, cutter teeth) used to convert torque into downward force while minimizing soil disturbance.
- Claim language at issue: (1) an “end plate having a substantially flat surface disposed perpendicular to the centerline of the tubular pile” (’236) and (2) “at least one protrusion extending outwardly from the end plate” (’708).
- Accused products: Foundation’s ED2M and ED3 pile tips (single, conically-shaped pieces); district court granted summary judgment of noninfringement finding no end plate with a substantially flat exterior surface and no protrusion extending outwardly from an end plate.
- Substructure’s theory: an interior horizontal slice of the accused solid pile tip constitutes the claimed end plate (with an interior flat surface) and the point shaft/fishtail region is a protrusion from that interior end plate.
- District court construed the claims by reference to the specification and prosecution history: the claimed flat surface is the exterior face of an end plate at the pile tip’s end, and a protrusion must extend outwardly from a distinguishable end plate; it rejected the idea of an imaginary interior plate and a protrusion that is indistinguishable from the end plate.
- Appeal: Ninth Circuit reviewed claim construction and summary judgment de novo (law), affirmed the district court — ED2M/ED3 do not infringe under the court’s constructions.
Issues:
| Issue | Plaintiff's Argument | Defendant's Argument | Held |
|---|---|---|---|
| Whether “end plate having a substantially flat surface disposed perpendicular to the centerline” can be an interior-facing surface within a solid, cast pile tip | Substructure: the claimed flat surface can be an interior surface cut from a solid pile tip; drawings and casting disclosure allow a cast single-piece embodiment | Foundation: claim and spec refer to the exterior end face that contacts soil; prosecution history added end plate to distinguish prior art | Court: construction refers to the exterior-facing flat end plate at the pile tip; interior imaginary slice is not the claimed surface; no infringement |
| Whether a “protrusion extending outwardly from the end plate” covers a protrusion that is an indistinguishable part of a single conical piece | Substructure: casting/weld options permit the protrusion and end plate to be part of a single piece and still satisfy claim | Foundation: a protrusion must extend outwardly from a distinguishable end plate; an object cannot protrude from itself | Court: protrusion must extend outwardly from an end plate that is meaningfully distinct; single conical end piece does not meet the limitation; no infringement |
Key Cases Cited
- Teva Pharm. USA, Inc. v. Sandoz, Inc., 574 U.S. 318 (2015) (claim construction is a legal question reviewable de novo, with subsidiary factual findings reviewed for clear error)
- Phil–Insul Corp. v. Airlite Plastics Co., 854 F.3d 1344 (Fed. Cir. 2017) (summary-judgment review standard in patent context referenced)
- Brunozzi v. Cable Comms’ns, Inc., 851 F.3d 990 (9th Cir. 2017) (summary judgment reviewed de novo in Ninth Circuit)
- Zetwick v. Cty. of Yolo, 850 F.3d 436 (9th Cir. 2017) (no genuine dispute of material fact standard for summary judgment)
- Becton, Dickinson & Co. v. Tyco Healthcare Grp., LP, 616 F.3d 1249 (Fed. Cir. 2010) (claim constructions that render claims nonsensical are impermissible)
- Applied Med. Res. Corp. v. U.S. Surgical Corp., 448 F.3d 1324 (Fed. Cir. 2006) (different claim terms used together must have different meanings)