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No. 10372933
United States Court of Appeals for the Ninth Circuit
United States v. Siao
No. 10372933 · Decided April 4, 2025
No. 10372933·Ninth Circuit · 2025·
FlawFinder last updated this page Apr. 2, 2026
Case Details
Court
United States Court of Appeals for the Ninth Circuit
Decided
April 4, 2025
Citation
No. 10372933
Disposition
See opinion text.
Full Opinion
NOT FOR PUBLICATION FILED
UNITED STATES COURT OF APPEALS APR 4 2025
MOLLY C. DWYER, CLERK
U.S. COURT OF APPEALS
FOR THE NINTH CIRCUIT
UNITED STATES OF AMERICA, No. 24-1486
D.C. No.
Plaintiff - Appellee, 5:21-cr-00267-BLF-1
v. MEMORANDUM*
DONALD SIAO,
Defendant - Appellant.
Appeal from the United States District Court
for the Northern District of California
Beth Labson Freeman, District Judge, Presiding
Submitted April 2, 2025**
San Francisco, California
Before: HURWITZ, KOH, and JOHNSTONE, Circuit Judges.
Donald Siao appeals his conviction under 21 U.S.C. § 841(a)(1) for the
unauthorized distribution of a controlled substance. We have jurisdiction under 28
U.S.C. § 1291. Because the parties are familiar with the facts, we do not recount
*
This disposition is not appropriate for publication and is not precedent
except as provided by Ninth Circuit Rule 36-3.
**
The panel unanimously concludes this case is suitable for decision
without oral argument. See Fed. R. App. P. 34(a)(2).
them here, except as necessary to provide context to our ruling.
Siao’s sole claim of error involves a jury instruction to which he did not
object at trial. When there is no objection to a jury instruction at trial, we review
for plain error. See United States v. Conti, 804 F.3d 977, 981 (9th Cir. 2015).
Under the plain error standard, relief is not warranted unless there has been an
error, that was plain, which affected the defendant’s substantial rights, and
“seriously affected the fairness, integrity, or public reputation of judicial
proceedings.” United States v. Walter-Eze, 869 F.3d 891, 911 (9th Cir. 2017).
Finding no plain error, we affirm.
“Except as authorized,” it is “unlawful for any person knowingly or
intentionally—to manufacture, distribute, or dispense . . . a controlled substance.”
21 U.S.C. § 841(a)(1). Conduct is unauthorized if it is not “issued for a legitimate
medical purpose by an individual practitioner acting in the usual course of his
professional practice.” 21 C.F.R. § 1306.04(a). “After a defendant produces
evidence that he or she was authorized to dispense controlled substances, the
Government must prove beyond a reasonable doubt that the defendant knew that
he or she was acting in an unauthorized manner, or intended to do so.” Ruan v.
United States, 597 U.S. 450, 454 (2022). In other words, the government must
“prove not only that the conduct was unauthorized, but also that the defendant
knew or intended it to be unauthorized.” United States v. Pham, 120 F.4th 1368,
2 24-1486
1371 (9th Cir. 2024) (citing Ruan, 597 U.S. at 468).
The disputed jury instruction stated that to convict, the jury was required to
find that: “Donald Siao knowingly or intentionally acted in an unauthorized
manner. ‘Unauthorized manner’ means that the distribution of the controlled
substance was outside of the usual course of professional practice and without a
legitimate medical purpose.” Although the parties’ stipulated jury instruction may
have more clearly conveyed the objective and subjective elements of unauthorized
distribution, the given instruction sufficiently conveys the elements of § 841(a)(1)
because it requires the jury to find both that Siao knowingly or intentionally acted
in an unauthorized manner and that his actions were in fact unauthorized. See
United States v. Feingold, 454 F.3d 1001, 1008-09 (9th Cir. 2006) (instructing
which elements the government must prove, and suggesting that a similarly
combined instruction would be sufficient). Any ambiguity in the instruction was
not “clear or obvious” error and thus was not plain error. See Puckett v. United
States, 556 U.S. 129, 135 (2009).
AFFIRMED.
3 24-1486
Plain English Summary
NOT FOR PUBLICATION FILED UNITED STATES COURT OF APPEALS APR 4 2025 MOLLY C.
Key Points
01NOT FOR PUBLICATION FILED UNITED STATES COURT OF APPEALS APR 4 2025 MOLLY C.
02COURT OF APPEALS FOR THE NINTH CIRCUIT UNITED STATES OF AMERICA, No.
03§ 841(a)(1) for the unauthorized distribution of a controlled substance.
04Because the parties are familiar with the facts, we do not recount * This disposition is not appropriate for publication and is not precedent except as provided by Ninth Circuit Rule 36-3.
Frequently Asked Questions
NOT FOR PUBLICATION FILED UNITED STATES COURT OF APPEALS APR 4 2025 MOLLY C.
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This case was decided on April 4, 2025.
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