David D. Weinzweig
Photograph courtesy of the Arizona Court of Appeals, Division One.
Education and employment
David D. Weinzweig was appointed to the Arizona Court of Appeals in December 2017. He is an Arizona native who received his B.A. from the University of Arizona and his J.D. from Arizona State University.
Before joining the Arizona Court of Appeals, Judge Weinzweig spent his career in private practice and the public sector. He represented corporate and government clients in commercial litigation at Lewis and Roca, specializing in antitrust law, and served three Arizona Attorneys General, defending dozens of high-profile complex and constitutional lawsuits and appeals. He also practiced constitutional and commercial litigation in trial and appellate courts at Ellman Weinzweig.
Judge Weinzweig has served on rules and practice committees, including the Civil Justice Reform Committee and the Local Rules of Practice Advisory Committee of the U.S. District Court for the District of Arizona. He also helped build and thrice chaired a popular awards program to honor local attorneys for community and public service. He formerly served on the Arizona Commission of Judicial Performance Review and the Judicial Selection Advisory Committee of the City of Phoenix.
Judge Weinzweig teaches legal and persuasive writing to state and federal judges, law clerks and practicing lawyers at judicial colleges, bar associations and law schools nationwide. His book, Zen and the Art of Persuasive Writing, was released in January 2026 by the American Bar Association. He has authored and co-authored full chapters in authoritative treatises on antitrust law, corporate in-house legal practices and consumer protection.
Judicial record
1024 opinions where David D. Weinzweig sat on the panel, spanning 2018–2026.
By court
By disposition
Panel votes per year
How David D. Weinzweig's panel-seat count has shifted year by year. Overlaid with D. Steven Williams for comparison (drop the overlay).
- David D. Weinzweig
- D. Steven Williams
Most-frequent co-panelists
Judges who appeared on the same opinions. aligned = same bucket (both majority, both dissent); partial = concurred in result but wrote separately; split = the meaningful disagreement (majority vs dissent).
- Jennifer M. Perkins 254 shared 252 aligned 2 split compare
- D. Steven Williams 147 shared 147 aligned compare
- James B. Morse Jr. 142 shared 141 aligned 1 split compare
- Michael J. Brown 134 shared 133 aligned 1 split compare
- Peter B. Swann 121 shared 120 aligned 1 split compare
- Randall M. Howe 113 shared 113 aligned compare
- Brian Y. Furuya 109 shared 109 aligned compare
- Paul J. McMurdie 109 shared 108 aligned 1 partial compare
- Samuel Anderson Thumma 95 shared 94 aligned 1 split compare
- David B. Gass 94 shared 94 aligned compare
Recent opinions
15 most recent opinions where David D. Weinzweig sat on the panel.
| Docket | Court | Filed | Disposition | Case |
|---|---|---|---|---|
| 1 CA-CR 25-0569 | Ariz. Ct. App. Div. 1 | 2026-10-30 | — | State v. Catron |
| 1 CA-CV 26-0104 FC | Ariz. Ct. App. Div. 1 | 2026-10-30 | Affirmed | Williamson v. Williamson |
| 1 CA-CV 26-0010 | Ariz. Ct. App. Div. 1 | 2026-10-19 | Vacated and remanded | SHARADA HOMES v. NORDINI |
| 1 CA-CV 26-0075 FC | Ariz. Ct. App. Div. 1 | 2026-10-15 | Affirmed in part; remanded in part | Nolte v. Brady |
| 1 CA-CV 25-0439 | Ariz. Ct. App. Div. 1 | 2026-10-14 | Affirmed in part; vacated and remanded in part | Lanese v. Lanese |
| 1 CA-JV 25-0201 | Ariz. Ct. App. Div. 1 | 2026-10-08 | Affirmed | In Re Term of Parental Rights as to A.I. and N.I. |
| 1 CA-CR 25-0484 PRPC | Ariz. Ct. App. Div. 1 | 2026-09-21 | Affirmed | State v. Albin |
| 1 CA-CV 25-0748 PB | Ariz. Ct. App. Div. 1 | 2026-09-15 | Affirmed | STEWART v. ARIZONA BANK |
| 1 CA-CV 25-0852 | Ariz. Ct. App. Div. 1 | 2026-09-15 | Vacated and remanded | Priority v. Durbin |
| 1 CA-CV 25-0966 | Ariz. Ct. App. Div. 1 | 2026-09-10 | Affirmed | LIVING UNITED v. STATE |
| 1 CA-JV 26-0007 | Ariz. Ct. App. Div. 1 | 2026-09-09 | Reversed and remanded | In Re Term of Parental Rights as to R.T. |
| 1 CA-JV 26-0036 | Ariz. Ct. App. Div. 1 | 2026-09-02 | Affirmed | In RE TERM OF PARENTAL RIGHTS AS TO M.C. |
| 1 CA-CR 25-0563 PRPC | Ariz. Ct. App. Div. 1 | 2026-09-02 | Denied | State v. Floyd |
| 1 CA-CR 26-0143 PRPC | Ariz. Ct. App. Div. 1 | 2026-09-01 | Denied | State v. Baker |
| 1 CA-CR 26-0089 PRPC | Ariz. Ct. App. Div. 1 | 2026-09-01 | Denied | State v. Soriano |