---
title: "Frederick F. Mumm | KnowJudges"
canonical: "https://knowjudges.com/kyj/judge/frederick-f-mumm-9058"
page_type: "judge_profile"
updated: "2026-10-07"
---

# Frederick F. Mumm

U.S. District Court for the Central District of California · U.S. Magistrate Judge

## Profile

- Court: U.S. District Court for the Central District of California
- State: California
- Role: U.S. Magistrate Judge
- Service status: active
- Last verified: 2026-06-30

## Biography

### Professional career

- U.S. Magistrate Judge for the Central District of California, appointed in 2006 and serving until 2020, with a background in intellectual property law, media litigation, and corporate legal counsel
- Appointed as a U.S. Magistrate Judge by the U.S. District Court for the Central District of California on April 3, 2006, to an eight‐year renewable term
- Partner, Davis Wright Tremaine LLP, Los Angeles — specializing in intellectual property, media, and entertainment litigation
- Partner, Walter Finestone & Richter

### Education


### Additional information

- Magistrate, District Court, C.D. California, 2006-present
- Served in this role until 2020, when his tenure ended ezel.ai.
- Associate General Counsel, CBS Broadcasting Inc. (1993–1999).
- Magistrate judges handle certain civil and criminal matters, often including pretrial proceedings, motions, and some trials, under the authority of the district court.
- No longer active on the Central District of California bench ezel.ai.
- Public records show Judge Mumm handled civil matters in Los Angeles, including Social Security appeals ezel.ai.
- His profile is preserved as a historical record, and his successor in certain matters was Patricia A. Donahue ezel.ai.
- His rulings reflected a balanced approach: affirming agency decisions when supported by the record, and reversing and remanding when the administrative decision could not stand ezel.ai.

## Sources

- [Official profile](https://www.courtlistener.com/person/9058/frederick-f-mumm/)
- [Official roster](https://www.courtlistener.com/person/9058/frederick-f-mumm/)
- [U.S. District Court for the Central District of California current judicial profile](https://www.courtlistener.com/person/9058/frederick-f-mumm/)
- [CourtListener judicial biographical directory](https://www.courtlistener.com/person/9058/frederick-f-mumm/)

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## Published courtroom rules

### Shared court rules

- [Federal Rules of Civil Procedure, December 1, 2025](https://knowjudges.com/courtroom-rules/national-shared-set-651872d6e45e0d82319ecccc) — Civil actions in United States District Courts; Rule 81 exceptions 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-civil-procedure.pdf). Collected 2026-10-27.
- [Federal Rules of Criminal Procedure, December 1, 2025](https://knowjudges.com/courtroom-rules/national-shared-set-8721a344fececced2257fe1d) — Criminal proceedings in United States District Courts; this conservative mapping does not distribute appellate-specific provisions to appellate judges. 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-criminal-procedure.pdf). Collected 2026-10-27.