822 F.3d 1312
Fed. Cir.2016Background
- The dispute concerns U.S. Patent No. 6,475,243, which claims a prosthetic hip socket design where a securement recess and an internal taper are "juxtaposed" and "placed at relative locations such that the effectiveness of each ... is maintained while in the presence of the other."
- The patent’s written description (added during reexamination for some claims) repeatedly states the recess is placed "essentially midway" along the taper to maximize two taper segments and preserve effectiveness.
- Stryker sued Zimmer, Wright, and Smith for infringement. After claim construction (Markman), the district court construed the juxtaposition language to require the recess be "essentially midway" along the taper and, separately, construed certain claims to require a separate metallic sleeve between shell and bearing.
- Stryker did not amend its infringement contentions to set out a doctrine-of-equivalents (DOE) theory after claim construction and had only reserved the right to assert DOE; the district court barred DOE theories under its Local Patent Rules for that reason.
- The district court granted summary judgment of noninfringement based on the "essentially midway" construction (and the sleeve construction as to some defendants); Stryker appealed.
- The Federal Circuit affirmed: it adopted the district court’s "essentially midway" construction based on the intrinsic record and upheld the district court’s discretionary enforcement of local rules that precluded Stryker’s DOE theory for failure to timely amend contentions.
Issues
| Issue | Plaintiff's Argument | Defendant's Argument | Held |
|---|---|---|---|
| Proper construction of "juxtaposed" / "placed at relative locations such that the effectiveness ... is maintained" | Stryker: plain meaning allows simply "positioned nearby"; claims don't require a mid-point placement | Defendants: intrinsic record requires the recess be essentially midway to satisfy the effectiveness language | Court: Affirmed construction — read claims in light of written description; recess must be essentially midway along the taper |
| Whether the written-description "essentially midway" language improperly limits claims to a preferred embodiment | Stryker: the mid-point language is a preferred-embodiment detail and should not be imported into claim scope | Defendants: written description and prosecution history tie the claim language to the mid-point placement | Held: Court rejected preferred-embodiment objection — intrinsic evidence supports importing the mid-point placement to construe unclear relative-location terms |
| Claim-differentiation argument (dependent claims explicitly recite "essentially midway") | Stryker: dependent claims show independent claims shouldn’t be limited to mid-point | Defendants: presumption of differentiation is rebutted by intrinsic evidence | Held: Court held claim-differentiation rebutted by the written description and prosecution history; construction stands |
| Whether district court abused discretion by barring DOE theory for failure to comply with Local Patent Rules | Stryker: reserved right to assert DOE and could not reasonably amend until after claim construction; denial was unfair | Defendants: Stryker failed to comply with LPR 3.1(e) and never timely sought amendment under LPR 3.7 | Held: Court affirmed abuse-of-discretion review denial — district court did not abuse discretion in enforcing its local rules and barring DOE theory |
Key Cases Cited
- Phillips v. AWH Corp., 415 F.3d 1303 (Fed. Cir.) (claim construction requires reading claims in context of specification)
- Teva Pharm. Indus. Ltd. v. AstraZeneca Pharm. LP, 661 F.3d 1378 (Fed. Cir. 2011) (standard for reviewing summary judgment tied to regional-circuit law)
- Teva Pharm. USA, Inc. v. Sandoz, Inc., 135 S. Ct. 831 (2015) (deference rules for factual findings in claim construction)
- O2 Micro Int’l Ltd. v. Monolithic Power Sys., Inc., 467 F.3d 1355 (Fed. Cir. 2006) (review of district court enforcement of local patent rules)
- Genentech, Inc. v. Amgen, Inc., 289 F.3d 761 (Fed. Cir. 2002) (upholding exclusion of DOE theory for failure to comply with local rules)
- Nautilus, Inc. v. Biosig Instruments, Inc., 134 S. Ct. 2120 (2014) (indefiniteness standard and claim clarity considerations)
- Anderson v. Liberty Lobby, Inc., 477 U.S. 242 (summary judgment standard)