Judge William J. Pendergast III

Judge William J. Pendergast III has served on the Solano County Superior Court since his appointment by Governor Jerry Brown on December 24, 2016, with a formal investiture ceremony held in February 2017. As of July 2025, he holds a presiding judge role on the court, reflecting institutional trust and seniority within the Solano County bench. His tenure spans nearly a decade of criminal court work, including high-profile sentencing and post-conviction matters. The two most documented cases from his courtroom reveal a judge who handles serious criminal matters at both ends of the spectrum: in January 2021, he presided over the sentencing of a Fairfield sexual predator to over 300 years in prison, and in May 2025, he freed Reginald Tanubagijo after 11 years of wrongful incarceration, citing discredited forensic science as the basis for relief. These two cases, taken together, demonstrate a judge who applies serious scrutiny to the evidentiary record — imposing severe consequences when the evidence supports conviction, and granting extraordinary relief when the scientific foundation of a conviction is undermined. Because no attorney observations or ruling analyses are available in the current dataset, the intelligence in this profile is drawn exclusively from public case records and court documentation. Attorneys should treat this profile as a starting point and supplement it with direct research into recent Solano County Superior Court dockets.

The Tanubagijo exoneration is the single most instructive data point available for attorneys appearing before Judge Pendergast. He granted post-conviction relief in a case where the underlying forensic science had been discredited — a decision that required active engagement with the quality and reliability of expert evidence. Attorneys on either side of a case involving forensic or scientific testimony should treat the reliability and current scientific consensus around that evidence as a central issue, not a background assumption. Defense attorneys challenging forensic evidence have a documented basis to argue that Judge Pendergast will engage seriously with such challenges. On the prosecution side, the 300-plus year sentence in the 2021 sexual predator case signals that Judge Pendergast does not shy away from imposing severe sentences when the record supports them. Prosecutors presenting serious criminal matters should ensure the evidentiary record is airtight, as the same scrutiny applied in Tanubagijo would apply to the foundation of any conviction. Defense attorneys in serious criminal cases should not assume leniency, but should focus on the integrity of the evidence presented against their clients. Given the absence of attorney observations and ruling analyses, attorneys should conduct independent docket research on recent Solano County Superior Court filings to identify procedural preferences, motion practice patterns, and courtroom management style before appearing before Judge Pendergast.

• critical

  Audit All Forensic and Expert Evidence for Scientific Validity

  Given the Tanubagijo exoneration, Judge Pendergast has demonstrated active scrutiny of whether forensic science is currently accepted in the relevant scientific community. Both prosecutors and defense counsel must be prepared to address the current validity and peer-reviewed status of any expert testimony or forensic methodology.

• critical

  Research Recent Solano County Docket Entries

  No ruling analyses or attorney observations are available in this dataset. Before appearing, attorneys should pull recent docket entries from Solano County Superior Court to identify Judge Pendergast's procedural preferences, scheduling practices, and motion practice patterns.

• important

  Prepare Sentencing Record Thoroughly in Serious Criminal Cases

  The 300-plus year sentence in the 2021 case reflects a court that takes sentencing in serious criminal matters seriously. Defense counsel should prepare comprehensive mitigation packages; prosecutors should ensure aggravating factors are fully documented in the record.

• important

  Review the Tanubagijo Case Record

  Attorneys handling post-conviction matters or cases involving forensic evidence should review the publicly available record in the Tanubagijo case to understand how Judge Pendergast framed and resolved the discredited science issue.

• Nice

  Confirm Current Presiding Judge Assignment

  Judge Pendergast was identified as a presiding judge as of July 2025. Attorneys should confirm his current department and assignment before filing or appearing, as presiding judge duties can affect availability and scheduling.

• ›Treat the scientific foundation of any expert or forensic testimony as a substantive issue the court will examine — do not present forensic evidence as self-evidently reliable without being prepared to defend its current scientific standing.
• ›In serious criminal matters, approach sentencing arguments with the understanding that the court has demonstrated willingness to impose severe sentences; present mitigation or aggravation with full evidentiary support.
• ›Given Judge Pendergast's presiding judge status, be prepared for a structured and efficient courtroom — arrive prepared with organized materials and clear, concise arguments.
• ›Do not assume that the court will defer to the prosecution's framing of the evidence; the Tanubagijo case demonstrates independent judicial evaluation of the record.