Judge Mary Ann Murphy

Judge Mary Ann Murphy serves on the Los Angeles County Superior Court, having been appointed by Governor Gavin Newsom on January 10, 2022. She earned her undergraduate degree in Sociology from Loyola Marymount University in 1987 and her law degree from Pepperdine Caruso School of Law. Prior to her appointment, she operated the Law Office of Mary Ann Murphy as a family law attorney from 1990 to 2022, giving her over three decades of civil litigation experience before taking the bench. Judge Murphy's tenure has been marked by significant controversy. In March 2025, a coalition of 17 attorneys filed to disqualify her from presiding over a high-profile sex abuse trial, alleging judicial bias and characterizing her courtroom conduct as a 'reign of terror.' This disqualification effort was reported by both the Daily Journal and the Los Angeles Daily News, indicating the matter received substantial legal community attention. The scale of the disqualification effort — involving 17 attorneys acting collectively — is notable and reflects organized, documented concern among practitioners who have appeared before her. No ruling analyses, attorney observations, or ingested content records are available to assess her decision-making patterns, grant rates, or procedural preferences. The available data is limited to biographical background and the documented 2025 disqualification controversy. Attorneys should treat the disqualification episode as a concrete, documented data point rather than an isolated anecdote, and prepare accordingly.

Given Judge Murphy's 32-year background exclusively in family law prior to her appointment, attorneys appearing before her in family law matters should recognize she brings substantial substantive expertise to those proceedings. However, no ruling data exists to confirm how that background translates into specific rulings or procedural tendencies on the bench. The documented 2025 disqualification effort by 17 attorneys — alleging bias and describing her conduct as a 'reign of terror' — is the single most actionable data point available. Attorneys should maintain meticulous records of all courtroom interactions, rulings, and communications. If bias or irregular conduct is observed, the documented precedent of a collective disqualification effort demonstrates that formal CCP 170.1 challenges have been pursued by practitioners before her. Attorneys should consult the Daily Journal and Los Angeles Daily News coverage of the 2025 disqualification proceedings for additional factual detail before appearing. With no ruling analyses available, attorneys cannot rely on pattern-based predictions about how she rules on motions, evidentiary issues, or procedural matters. The prudent approach is to over-prepare on both substance and procedure, maintain professional decorum at all times, and document courtroom conduct carefully throughout any proceeding.

• critical

  Review 2025 Disqualification Filings and Press Coverage

  Obtain and review the Daily Journal and Los Angeles Daily News coverage of the March 2025 disqualification proceedings. The specific allegations made by the 17 attorneys provide the most concrete available intelligence about her courtroom conduct.

• critical

  Prepare CCP 170.1 Disqualification Documentation Protocol

  Given the documented history of a collective disqualification effort, establish an internal protocol for contemporaneously documenting all courtroom interactions, rulings, and statements in the event a disqualification challenge becomes necessary.

• critical

  Consult Attorneys Who Have Appeared Before Her

  No attorney observations are available in this dataset. Directly contact practitioners who have appeared before Judge Murphy — particularly those involved in the 2025 disqualification proceedings — to obtain firsthand courtroom intelligence.

• important

  Prepare Substantively for Family Law Matters

  Her 32-year family law practice background means she will recognize weak or underprepared family law arguments. Ensure all family law filings are substantively rigorous and procedurally complete.

• important

  Monitor Docket for Post-2025 Developments

  The outcome of the 2025 disqualification proceedings — whether she was disqualified or remained on the case — is not reflected in the available data. Confirm the current status of that matter and any subsequent judicial conduct proceedings.

• ›Maintain strict professional decorum at all times; the documented 'reign of terror' characterization in formal filings signals that courtroom tensions can escalate, and attorneys should not contribute to or provoke conflict.
• ›Document all courtroom interactions contemporaneously, including rulings, statements from the bench, and any conduct that deviates from standard judicial practice.
• ›Do not rely on informal or casual courtroom communication styles; given the documented bias allegations, formal and precise conduct is the safest approach.
• ›If you observe conduct that raises bias concerns, consult CCP 170.1 and the documented precedent of the 2025 collective disqualification effort before deciding how to respond.