Judge Carolyn B. Kuhl

Judge Carolyn B. Kuhl has served on the Los Angeles Superior Court since her appointment by Governor Gray Davis in March 2001, making her one of the more experienced jurists at the Stanley Mosk Courthouse. A University of Virginia School of Law graduate, she has built a reputation over more than two decades as a jurist willing to take on complex, high-stakes litigation that requires sustained judicial management and sophisticated evidentiary analysis. Her most prominent current assignment — presiding over the consolidated social media addiction and youth harm trials involving Meta (Instagram), YouTube (Google), and Snap — has placed her at the center of one of the most consequential mass tort proceedings in California history, drawing national media attention and establishing her as a significant figure in emerging technology litigation. Based on available public reporting and court record data, Judge Kuhl exhibits a distinctly active case management style. She has demonstrated a willingness to compel the highest levels of corporate leadership — including CEOs Mark Zuckerberg, Adam Mosseri, and Evan Spiegel — to testify personally, signaling that she will not allow corporate defendants to insulate their decision-makers from judicial scrutiny through organizational distance. This posture suggests a judge who prioritizes accountability and transparency from institutional parties, particularly when the alleged harm involves vulnerable populations such as children. Her evidentiary approach reflects careful, calibrated gatekeeping. Public reporting indicates she has admitted expert testimony on platform harm and usage data while excluding evidence deemed unduly graphic or prejudicial — a balance consistent with a judge who takes Daubert-style reliability seriously but is not reflexively hostile to novel scientific or behavioral evidence. Attorneys should expect rigorous scrutiny of expert qualifications and methodologies, and should anticipate that she will draw firm lines around inflammatory material even when it might otherwise be probative. Her overall judicial temperament appears to favor structured, well-managed proceedings with clear evidentiary boundaries.

Attorneys appearing before Judge Kuhl should prioritize meticulous case management compliance and proactive communication with the court. Given her demonstrated willingness to impose significant discovery and testimony obligations on even the most powerful corporate defendants, defense counsel in particular should not assume that executive-level witnesses will be shielded from direct court orders. Attempting to resist or delay compliance with testimony orders through procedural maneuvering is likely to be viewed unfavorably. Plaintiffs' counsel, conversely, should be prepared to justify the necessity and proportionality of any high-level deposition or testimony requests with concrete factual and legal support — Judge Kuhl's orders appear grounded in specific findings, not reflexive sympathy. On evidentiary matters, attorneys should invest heavily in the foundation and methodology of any expert witnesses they intend to call. Judge Kuhl's gatekeeping record suggests she will conduct meaningful reliability analysis and will not simply defer to credentialed experts without scrutiny. Daubert motions should be taken seriously on both sides. When presenting evidence of harm or damages, counsel should avoid relying on graphic or emotionally inflammatory exhibits as a substitute for rigorous proof — the record suggests she will exclude such material even when it might otherwise be admissible, favoring analytical probity over emotional impact. Given the complexity of the litigation she manages, Judge Kuhl likely expects attorneys to arrive fully prepared, with clear command of the factual record and legal authority. Oral argument should be concise, structured, and anchored in the record. Attorneys who waste court time with unfocused presentations or who appear unprepared for the judge's questions risk losing credibility quickly in what is clearly a high-functioning, demanding courtroom environment.

• critical

  Conduct Full Daubert/Expert Witness Audit

  Before any hearing involving expert testimony, conduct a rigorous internal review of every expert's methodology, qualifications, and the reliability of their underlying data. Judge Kuhl's gatekeeping record in the social media litigation demonstrates she will scrutinize expert foundations carefully. Anticipate opposing Daubert motions and prepare detailed written responses with supporting authority.

• critical

  Prepare Corporate Clients for Potential Testimony Orders

  If representing an institutional defendant with senior executives who may be implicated in the underlying conduct, brief those executives early on the possibility of direct testimony orders. Judge Kuhl has shown she will not hesitate to compel CEO-level testimony. Develop a litigation strategy that accounts for this risk rather than assuming apex doctrine will provide complete protection.

• critical

  Review All Evidentiary Exhibits for Prejudice vs. Probative Balance

  Audit your exhibit list for any materials that could be characterized as unduly graphic, inflammatory, or prejudicial. Judge Kuhl has excluded such evidence even in cases involving serious harm. For each potentially sensitive exhibit, prepare a written justification of its probative value and why it is not substantially outweighed by prejudice under Evidence Code section 352.

• important

  Master the Procedural and Factual Record

  Judge Kuhl manages extraordinarily complex consolidated litigation. Appearing before her without complete command of the procedural history, key rulings, and factual record is a significant credibility risk. Prepare a comprehensive case chronology and be ready to answer detailed questions about prior orders and their implications for the current motion or hearing.

• important

  Prepare Concise, Structured Oral Arguments

  Given her active case management style and the volume of complex matters she handles, Judge Kuhl likely values efficient, well-organized oral presentations. Prepare a clear argument outline with your strongest points leading, anticipate her questions based on the written record, and avoid repetition of briefed arguments unless specifically invited to elaborate.

• Nice

  Research Her Prior Rulings in the Social Media Litigation

  Public court records, news coverage, and legal databases may contain detailed reporting on her specific rulings in the consolidated social media cases. Reviewing these materials will provide the most direct available insight into her current evidentiary standards, case management preferences, and substantive legal positions on issues that may be relevant to your matter.

• ›Arrive fully prepared with command of both the factual record and applicable legal authority — Judge Kuhl manages high-complexity litigation and will expect counsel to answer detailed questions without fumbling through materials.
• ›Do not attempt to shield corporate clients from accountability through procedural delay or organizational distance arguments without strong legal support; her record suggests she views such tactics skeptically and will issue direct orders when warranted.
• ›Present evidentiary arguments with explicit attention to the probative value versus prejudice balance under Evidence Code section 352 — she has demonstrated she will conduct this analysis carefully and will exclude material that fails it.
• ›Be concise and structured in oral argument; avoid repeating arguments already made in written briefs unless the judge specifically invites elaboration, and lead with your strongest points.
• ›Comply strictly with all case management orders and deadlines — in a consolidated proceeding of this complexity, procedural non-compliance is likely to draw adverse attention and may affect credibility on substantive issues.
• ›Treat opposing counsel and witnesses with professional respect; a judge managing high-profile, nationally watched litigation will be particularly sensitive to conduct that could reflect poorly on the proceedings.