---
title: "Lucy Haeran Koh | KnowJudges"
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page_type: "judge_profile"
updated: "2026-10-09"
---

# Lucy Haeran Koh

U.S. Court of Appeals for the Ninth Circuit · U.S. Circuit Judge

## Profile

- Court: U.S. Court of Appeals for the Ninth Circuit
- State: National federal courts
- Role: U.S. Circuit Judge
- Service status: active
- Last verified: 2026-07-25

## Summary

Official statewide and applicable court procedural guidance applies to this judge.

## Biography

### Professional career

- Judge, District Court, N.D. California, 2010-present
- Judge, Superior Court of California, County of Santa Clara, 2008-2010
- Judge, U.S. District Court, 2008-2010
- Assistant U. S. attorney, Central District of California, 1997-2000
- special assistant to the deputy attorney general, 1996-1997
- U.S. Department of Justice, 1994-1997
- special counsel, Office of Legislative Affairs, 1994-1996
- Judge of the United States Court of Appeals for the Ninth Circuit

### Education

- Harvard University — J.D. (1993)
- Harvard University — B.A. (1990)
- Harvard College

### Additional information

- Private practice, Palo Alto, CA, 2000-2008
- Fellow, U.S. Senate Committee on the Judiciary, 1993-1994
- Date of birth: 1968-01-01
- Birth place: Washington, DC

## Before you appear

- Read the judge-specific standing order first when one is listed.
- Check the docket and case orders for requirements that supersede broader guidance.
- Confirm current remote-access and courtroom technology arrangements before the proceeding.

## Courtroom Rules

### appellate oral argument

Scope: courtwide

In federal courts of appeals, oral argument is allowed unless a three-judge panel unanimously finds one of Rule 34's specified grounds for dispensing with it; the clerk provides the date, time, place, and time allocation.

Evidence excerpt: Oral argument must be allowed in every case unless a panel of three judges who have examined the briefs and record unanimously agrees that oral argument is unnecessary

[Federal Rule of Appellate Procedure 34, Oral Argument](https://www.uscourts.gov/forms-rules/current-rules-practice-procedure/federal-rules-appellate-procedure)
Source checked: 2026-07-26


## Sources

- [Official profile](https://www.fjc.gov/node/1393231)
- [Official roster](https://www.fjc.gov/node/1393231)
- [Federal Judicial Center biography](https://www.fjc.gov/node/1393231)
- [CourtListener judicial biographical directory](https://www.courtlistener.com/person/1808/lucy-haeran-koh/)
- [Federal Rule of Appellate Procedure 34, Oral Argument](https://www.uscourts.gov/forms-rules/current-rules-practice-procedure/federal-rules-appellate-procedure)
- [CourtListener judicial biographical directory](https://www.courtlistener.com/person/1808/lucy-haeran-koh/)
- [Wikidata: Lucy H. Koh](https://www.wikidata.org/wiki/Q6698345)

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