---
title: "J. Barrett Marum | KnowJudges"
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page_type: "judge_profile"
updated: "2026-10-08"
---

# J. Barrett Marum

U.S. Bankruptcy Court for the Southern District of California · U.S. Bankruptcy Judge

## Profile

- Court: U.S. Bankruptcy Court for the Southern District of California
- State: California
- Role: U.S. Bankruptcy Judge
- Service status: active
- Last verified: 2026-09-10

## Summary

Official statewide and applicable court procedural guidance applies to this judge.

## 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

### motion form

Scope: courtwide

Request an order by written motion unless the rules authorize an application or the request is made during a hearing. State the grounds with particularity and specify the requested relief or order.

Evidence excerpt: A motion must state its grounds with particularity and set forth the relief or order requested.

[Federal Rules of Bankruptcy Procedure](https://www.uscourts.gov/sites/default/files/document/federal-rules-of-bankruptcy-procedure.pdf)
Source checked: 2026-07-30

### motion notice timing

Scope: courtwide

Unless a motion may be heard ex parte or another period applies, serve the written motion and hearing notice at least seven days before the hearing. Serve supporting affidavits with the motion.

Evidence excerpt: A written motion (other than one that may be heard ex parte) and notice of any hearing must be served at least 7 days before the hearing date, unless the court or these rules set a different period.

[Federal Rules of Bankruptcy Procedure](https://www.uscourts.gov/sites/default/files/document/federal-rules-of-bankruptcy-procedure.pdf)
Source checked: 2026-07-30

### contested matter notice

Scope: courtwide

In a contested matter not otherwise governed by the bankruptcy rules, request relief by motion and give the opposing party reasonable notice and an opportunity to be heard. A response is required only if the court orders one.

Evidence excerpt: Reasonable notice and an opportunity to be heard must be given to the party against whom relief is sought. No response is required unless the court orders otherwise.

[Federal Rules of Bankruptcy Procedure](https://www.uscourts.gov/sites/default/files/document/federal-rules-of-bankruptcy-procedure.pdf)
Source checked: 2026-07-30

### disputed fact testimony

Scope: courtwide

Present witness testimony on a disputed material factual issue in the same manner as testimony in an adversary proceeding.

Evidence excerpt: A witness's testimony on a disputed material factual issue must be taken in the same manner as testimony in an adversary proceeding.

[Federal Rules of Bankruptcy Procedure](https://www.uscourts.gov/sites/default/files/document/federal-rules-of-bankruptcy-procedure.pdf)
Source checked: 2026-07-30

### evidentiary hearing notice

Scope: courtwide

Use the court's procedure to determine, reasonably before a scheduled hearing, whether it will be an evidentiary hearing at which witnesses may testify.

Evidence excerpt: The court must provide procedures that allow parties-at a reasonable time before a scheduled hearing-to determine whether it will be an evidentiary hearing at which witnesses may testify.

[Federal Rules of Bankruptcy Procedure](https://www.uscourts.gov/sites/default/files/document/federal-rules-of-bankruptcy-procedure.pdf)
Source checked: 2026-07-30

### evidence rules

Scope: courtwide

Prepare evidence under the Federal Rules of Evidence and Federal Rules of Civil Procedure 43, 44, and 44.1, which apply in bankruptcy cases.

Evidence excerpt: The Federal Rules of Evidence and Fed. R. Civ. P. 43, 44, and 44.1 apply in a bankruptcy case.

[Federal Rules of Bankruptcy Procedure](https://www.uscourts.gov/sites/default/files/document/federal-rules-of-bankruptcy-procedure.pdf)
Source checked: 2026-07-30

### oath or affirmation

Scope: courtwide

A solemn affirmation may substitute when an oath is required. The national rule identifies the bankruptcy judge, clerk, deputy clerk, U.S. trustee, and other authorized officers as persons who may administer it.

Evidence excerpt: If an oath is required, a solemn affirmation suffices.

[Federal Rules of Bankruptcy Procedure](https://www.uscourts.gov/sites/default/files/document/federal-rules-of-bankruptcy-procedure.pdf)
Source checked: 2026-07-30


## Sources

- [Official profile](https://www.casb.uscourts.gov/content/judge-j-barrett-marum)
- [Official roster](https://www.casb.uscourts.gov/content/judge-j-barrett-marum)
- [casb.uscourts.gov judicial profile or roster](https://www.casb.uscourts.gov/content/judge-j-barrett-marum)
- [Federal Rules of Bankruptcy Procedure](https://www.uscourts.gov/sites/default/files/document/federal-rules-of-bankruptcy-procedure.pdf)

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## Biography

### Professional career

- U.S. Bankruptcy Judge for the Southern District of California, appointed to a 14‐year term beginning August 30, 2024, following a long career in bankruptcy practice
- Professional service: Lawyer representative for the Southern District of California to the Ninth Circuit
- Appointed: By the Judges of the U.S. Court of Appeals for the Ninth Circuit as a U.S. Bankruptcy Judge for the Southern District of California

### Education

- UCLA School of Law — Order of the Coif; member of the Environmental Law Journal — J.D. (2003)
- Political Science, University of California, Berkeley — graduated in three years with high distinction/high honors — B.A. (2000)
- early exposure to law included work in plaintiff-side asbestos law firms during college

### Additional information

- Early Legal Career and Clerkship ⚖️ Judicial Law Clerk, Hon. Thomas J. Whelan, U.S. District Court for the Southern District of California, immediately after law school
- Pro bono work: Represented veterans, disaster victims, and adopting parents
- Longtime powerlifting competitor (20 years) and avid skier; his wife is an avid snowboarder



## Published courtroom rules

### Shared court rules

- [Federal Rules of Bankruptcy Procedure, December 1, 2025](https://knowjudges.com/courtroom-rules/national-shared-set-52c9ad7e083212c057b747c7) — Bankruptcy proceedings only; chapter-specific limits apply. Section-specific exceptions, waivers, later amendments and case orders remain applicable. This is a source excerpt, not an exhaustive statement of the rule. [Official source](https://www.uscourts.gov/sites/default/files/document/federal-rules-of-bankruptcy-procedure.pdf). Collected 2026-10-27.
