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No. 10307165
United States Court of Appeals for the Ninth Circuit
Hobus v. Howmedica Osteonics Corp.
No. 10307165 · Decided January 3, 2025
No. 10307165·Ninth Circuit · 2025·
FlawFinder last updated this page Apr. 2, 2026
Case Details
Court
United States Court of Appeals for the Ninth Circuit
Decided
January 3, 2025
Citation
No. 10307165
Disposition
See opinion text.
Full Opinion
FILED
NOT FOR PUBLICATION
JAN 3 2025
UNITED STATES COURT OF APPEALS MOLLY C. DWYER, CLERK
U.S. COURT OF APPEALS
FOR THE NINTH CIRCUIT
JACOB HOBUS, No. 23-3528
Plaintiff - Appellant,
v. DC No. 3:21-cv-00080-AN
HOWMEDICA OSTEONICS CORP., a
New Jersey Corporation, MEMORANDUM*
Defendant - Appellee.
Appeal from the United States District Court
for the District of Oregon
Adrienne C. Nelson, District Judge, Presiding
Argued and Submitted December 2, 2024
Portland, Oregon
Before: TASHIMA, NGUYEN, and SUNG, Circuit Judges.
Jacob Hobus appeals from the district court’s grant of summary judgment in
defendant’s favor in his diversity action asserting product liability claims under
Oregon law against Howmedica Osteonics Corp. (“HOC”), the manufacturer of an
AccuLIF® TL Cage System that was implanted during surgery on Hobus’s spine.
*
This disposition is not appropriate for publication and is not precedent
except as provided by Ninth Circuit Rule 36-3.
We have jurisdiction under 28 U.S.C. § 1291. We review de novo the district
court’s grant of summary judgment, and for abuse of discretion its decision to
exclude expert testimony. See Newmaker v. City of Fortuna, 842 F.3d 1108, 1110
(9th Cir. 2016). We affirm.
1. The district court did not abuse its discretion in excluding as
unreliable the expert opinion of Dr. Jeffrey P. Johnson. Dr. Johnson used no
identifiable methodology, and his reasoning was undermined by his failure to
consider alternative factors despite Hobus’s long history of chronic pain. See Fed.
R. Evid. 702; Elosu v. Middlefork Ranch Inc., 26 F.4th 1017, 1024 (9th Cir. 2022)
(“To evaluate reliability, the district court ‘must assess the expert’s reasoning or
methodology, using . . . appropriate criteria such as testability, publication in peer-
reviewed literature, known or potential error rate, and general acceptance.’ These
factors are nonexclusive, and ‘the trial court has discretion to decide how to test an
expert’s reliability . . . based on the particular circumstances of the particular
case.’” (citations omitted)); see also Gen. Elec. Co. v. Joiner, 522 U.S. 136, 146
(1997) (“[N]othing in either [the case law] or the Federal Rules of Evidence
requires a district court to admit opinion evidence that is connected to existing data
only by the ipse dixit of the expert. A court may conclude that there is simply too
great an analytical gap between the data and the opinion proffered.”).
2
2. Having acted within its discretion in excluding Dr. Johnson’s expert
opinion on medical causation, the district court properly granted summary
judgment to HOC because Hobus failed to raise a triable issue of fact as to whether
HOC’s allegedly defective product caused his injury. See Glover v. BIC Corp., 6
F.3d 1318, 1327 (9th Cir. 1993) (explaining that product liability claims under
Oregon law require the plaintiff to prove a causal connection between the allegedly
defective product and the injury); see also Baughman v. Pina, 113 P.3d 459, 460
(Or. Ct. App. 2005) (“When the element of causation involves a complex medical
question, as a matter of law, no rational juror can find that a plaintiff has
established causation unless the plaintiff has presented expert testimony that there
is a reasonable medical probability that the alleged negligence caused the
plaintiff’s injuries.”).
AFFIRMED.
3
Plain English Summary
FILED NOT FOR PUBLICATION JAN 3 2025 UNITED STATES COURT OF APPEALS MOLLY C.
Key Points
01FILED NOT FOR PUBLICATION JAN 3 2025 UNITED STATES COURT OF APPEALS MOLLY C.
023:21-cv-00080-AN HOWMEDICA OSTEONICS CORP., a New Jersey Corporation, MEMORANDUM* Defendant - Appellee.
03Nelson, District Judge, Presiding Argued and Submitted December 2, 2024 Portland, Oregon Before: TASHIMA, NGUYEN, and SUNG, Circuit Judges.
04Jacob Hobus appeals from the district court’s grant of summary judgment in defendant’s favor in his diversity action asserting product liability claims under Oregon law against Howmedica Osteonics Corp.
Frequently Asked Questions
FILED NOT FOR PUBLICATION JAN 3 2025 UNITED STATES COURT OF APPEALS MOLLY C.
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This case was decided on January 3, 2025.
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