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No. 10297281
United States Court of Appeals for the Ninth Circuit
Peterson v. Best
No. 10297281 · Decided December 19, 2024
No. 10297281·Ninth Circuit · 2024·
FlawFinder last updated this page Apr. 2, 2026
Case Details
Court
United States Court of Appeals for the Ninth Circuit
Decided
December 19, 2024
Citation
No. 10297281
Disposition
See opinion text.
Full Opinion
NOT FOR PUBLICATION FILED
UNITED STATES COURT OF APPEALS DEC 19 2024
MOLLY C. DWYER, CLERK
U.S. COURT OF APPEALS
FOR THE NINTH CIRCUIT
RANDOLPH V. PETERSON, No. 24-354
D.C. No.
Plaintiff - Appellant, 2:22-cv-00219-TOR
v.
MEMORANDUM*
RYAN BEST, an individual doing business
as Best Law PLLC; BEST LAW OFFICE,
PLLC, a Washington professional limited
liability company,
Defendants - Appellees.
Appeal from the United States District Court
for the Eastern District of Washington
Thomas O. Rice, District Judge, Presiding
Argued and Submitted December 3, 2024
Seattle, Washington
Before: BOGGS, McKEOWN, and R. NELSON, Circuit Judges.**
Randolph Peterson appeals the district court’s summary judgment for Ryan
Best and Best Law Office, PLLC in a diversity action alleging legal malpractice
*
This disposition is not appropriate for publication and is not precedent
except as provided by Ninth Circuit Rule 36-3.
**
The Honorable Danny J. Boggs, United States Circuit Judge for the
U.S. Court of Appeals for the Sixth Circuit, sitting by designation.
under Washington law. We have jurisdiction under 28 U.S.C. § 1291, and we affirm.
1. The district court did not err in requiring expert testimony to establish
the standard of care for an attorney under the circumstances here. Generally, legal-
malpractice plaintiffs in Washington must offer expert testimony to establish a
breach of the applicable standard of care. See, e.g., Clark Cnty. Fire Dist. No. 5 v.
Bullivant Houser Bailey P.C., 324 P.3d 743, 752 n.5 (Wash. Ct. App. 2014).
Because law is “a highly technical field beyond the knowledge of the ordinary
person,” expert testimony fleshes out the “special skill or knowledge” integral to
“the preparation and conduct of specific litigation.” Walker v. Bangs, 601 P.2d 1279,
1282 (Wash. 1979). Without expert testimony, a “plaintiff risks dismissal of the
malpractice case.” Hizey v. Carpenter, 830 P.2d 646, 654 (Wash. 1992).
There is a limited exception to this default rule. An expert need not testify
when the negligence alleged “is within the common knowledge of lay persons.”
Walker, 601 P.2d at 1282. The district court here correctly found that the standard
of care for the qui tam action underlying this malpractice suit is not within the
“common knowledge” of non-lawyers. “In cases as complicated as qui tam actions,”
non-lawyers are not expected to understand “the complex legal and factual issues
involved.” See Stoner v. Santa Clara Cnty. Off. of Educ., 502 F.3d 1116, 1128 (9th
Cir. 2007). That is no less true in this case, which lasted several years and featured
lengthy consultation with the U.S. Attorney’s Office about the merits of Peterson’s
2 24-354
claim. The district court was right to require expert testimony on the appropriate
standard of care, without which Peterson could not meet his burden of proof on
summary judgment. Celotex Corp. v. Catrett, 477 U.S. 317, 322–23 (1986).
2. In the alternative, Peterson argues that the district court abused its
discretion in excluding his untimely disclosure of the expert report of Judge Harold
Clarke. See Fed. R. Civ. P. 37(c)(1). Peterson concedes that Judge Clarke should
have been offered as an initial expert, not a rebuttal witness. Yet Peterson maintains
the district court still should not have excluded Judge Clarke’s opinion without
conducting a harmlessness analysis.1 See id. But Peterson never explained to the
district court why it would have been harmless to allow Judge Clarke’s untimely
expert opinion. And when “the noncompliant party fails to argue harmlessness, a
district court need not hold a sua sponte hearing on that issue before imposing Rule
37(c)(1)’s default sanction” of exclusion. Merchant v. Corizon Health, Inc., 993
F.3d 733, 741 (9th Cir. 2021) (citing Hoffman v. Constr. Protective Servs., Inc., 541
F.3d 1175 (9th Cir. 2008)). Thus, the district court properly exercised its discretion
in refusing to consider Judge Clarke’s untimely expert opinion.
AFFIRMED.
1
Malone v. U.S. Postal Service, 833 F.2d 128 (9th Cir. 1987), does not apply.
Malone requires a district court to consider several factors before sanctioning a party
with dismissal for failure to comply with a court order. 833 F.2d at 129–30. This
case was not dismissed for noncompliance with the district court’s scheduling order.
3 24-354
Plain English Summary
NOT FOR PUBLICATION FILED UNITED STATES COURT OF APPEALS DEC 19 2024 MOLLY C.
Key Points
01NOT FOR PUBLICATION FILED UNITED STATES COURT OF APPEALS DEC 19 2024 MOLLY C.
02MEMORANDUM* RYAN BEST, an individual doing business as Best Law PLLC; BEST LAW OFFICE, PLLC, a Washington professional limited liability company, Defendants - Appellees.
03Rice, District Judge, Presiding Argued and Submitted December 3, 2024 Seattle, Washington Before: BOGGS, McKEOWN, and R.
04NELSON, Circuit Judges.** Randolph Peterson appeals the district court’s summary judgment for Ryan Best and Best Law Office, PLLC in a diversity action alleging legal malpractice * This disposition is not appropriate for publication and is
Frequently Asked Questions
NOT FOR PUBLICATION FILED UNITED STATES COURT OF APPEALS DEC 19 2024 MOLLY C.
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This case was decided on December 19, 2024.
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