Cadio Zirpoli

Top rated Antitrust Litigation attorney in San Francisco, California

Saveri Law Firm, LLP
Cadio Zirpoli
Saveri Law Firm, LLP

Practice areas: Antitrust Litigation, Intellectual Property; view more

Licensed in California since: 1995

Education: University of San Francisco School of Law

Selected to Super Lawyers: 2010, 2014 - 2026

Saveri Law Firm, LLP

550 California Street
Suite 910
San Francisco, CA 94104 Visit website
Details

Cadio Zirpoli has built his career on tenacity and the ability to bring numerous high-profile cases to positive results for his clients.  

Cadio’s passion for justice stems from an early post-law school position at the San Francisco District Attorney’s Office, where he distinguished himself by working under a federal grant to successfully prosecute repeat offenders of domestic violence, elder abuse, and child abuse. Working for victims suffering from these and other offenses made him commit to working for plaintiffs’ firms in which he could more directly advocate for victims’ rights and obtain compensation on their behalf.  

Due to his family background and education, Cadio has a particular focus and passion for representing the rights of artists, musicians, and authors, as evidenced by his key role in developing and coordinating the firm’s generative artificial intelligence litigation. These novel, cutting-edge cases are on behalf of classes of artists, coders, and authors who allege their creative work is being illegally appropriated by defendants’ artificial intelligence and machine learning technology without consent, credit, compensation, or transparency. They have drawn considerable legal and international press attention and were the subject of a July 2023 Senate Judiciary Committee subcommittee hearing, at which Cadio attended and advised his testifying client.  

In another notable case, at his former firm (Saveri & Saveri, Inc.), Cadio represented plaintiffs in a breach of contract case, Bozzio v. EMI Grp. Ltd., alleging defendant recording companies improperly treated certain sales of musicians’ recordings—through music download services, mobile phone mastertone downloads, and licensing for music streaming services—as record sales rather than revenue from licensing, and, as a result, paid the artists a lower royalty rate than the one provided for in their recording contracts. He argued and won an appeal before the Ninth Circuit Court of Appeals (811 F.3d 1144 (2016)), which raised issues of first impression. 

Throughout his legal career, Cadio has specialized in complex civil and class action litigation in both federal and state courts, focusing primarily on antitrust suits. His work covers various industries, including electronics, pharmaceuticals, banking, financial institutions, paper products, agriculture, travel, transportation, insurance, and the protein market. He has played a significant role in resolving some of the largest electronics antitrust cases on record, including In re DRAM Antitrust Litigation, In re Cathode Ray Tube (CRT) Antitrust Litigation, In re Optical Disk Drive Products Antitrust Litigation, and In re Lithium-Ion Batteries Antitrust Litigation. He has played a key role on the landmark Capacitors Price-Fixing Antitrust Litigation, which resulted in settlements totaling $604.55 million and breakthroughs in antitrust law.  

Cadio is currently representing plaintiffs in the firm’s Apartment Rental Software Antitrust Litigation, alleging a nationwide group of apartment management companies across the United States have illegally raised rents by adopting above-market rents provided to them by a company called RealPage. And he is prosecuting the “protein” cases: a series of price-fixing investigations, and collusion in the meat industry, such as broiler chickens and pork. 

Outside of his legal practice, Cadio is deeply committed to the community, serving as a volunteer judge with the YMCA Marin County Youth Court, an alternative to the traditional juvenile justice system based on restorative justice principles.  

Practice areas

Antitrust Litigation, Intellectual Property

Focus areas

Antitrust & Trade Litigation

  • 70% Antitrust Litigation
  • 30% Intellectual Property

First Admitted: 1995, California

Professional Webpage: https://www.saverilawfirm.com/attorneys/cadio-zirpoli

Bar / Professional Activity

  • State of California
  • U.S. Court of Appeals – 9th Circuit
  • U.S. District Court – Central District of California
  • U.S. District Court – Eastern District of California
  • U.S. District Court – Northern District of California
  • U.S. District Court – Southern District of California

Verdicts / Settlements (Case Results)

  • In re Capacitors Antitrust Litigation, No. 3:14-cv-03264-JD (N.D. Cal.) ($604.55 million total settlements)
  • DeMartini v. Microsoft Corporation, No. 3;22-cv-08991 (N.D. Cal.), 2025
  • Cameron v. Apple Inc., No. 19-cv-03074-YGR (N.D. Cal.) ($100 million settlement)
  • In re Static Random Access Memory (SRAM) Antitrust Litigation, MDL No. 1819, Case No. 07-MD-1819 (N.D. Cal.)
  • In re Managed Care Litigation, MDL No. 1334, Case No. 00-1334-MD (S.D. Fla.)
  • Bozzio v. EMI Grp. Ltd., 811 F.3d 1144 (9th Cir. 2016)
  • In re Lithium-Ion Batteries Antitrust Litigation, MDL No. 2420, Case No. 13-md-02420-YGR (N.D. Cal.) ($139.3 million in settlements)
  • In re Optical Disk Drive Products Antitrust Litigation, MDL No. 2143, Case No. 3:10-md-2143 RS (N.D. Cal.) ($205 million in settlements)
  • In re Cathode Ray Tube (CRT) Antitrust Litigation, MDL No. 191, Case No. cv-07-5944 JST (N.D. Cal.) ($580.75 million in settlements)
  • In re DRAM Antitrust Litigation, MDL No. 1486, Case No. M:02-1486 PJH (N.D. Cal.)
  • In re Broiler Chicken Antitrust Litigation, No. 16-cv-08637 (N.D. Ill.)
  • In re Pork Antitrust Litigation, No. 18-cv-01776-JRT-HB (D. Minn.)

Representative Clients

  • Represented class of individual electronic-gaming consumers, DeMartini v. Microsoft Corporation, No. 3:22-cv-08991 (N.D. Cal.)
  • Representing the rights of artists, musicians, and author in the firm’s generative artificial intelligence litigation. These novel, cutting-edge cases are on behalf of classes of artists, coders, and authors who allege their creative work is being illegally appropriated by defendants’ artificial intelligence and machine learning technology without consent, credit, compensation, or transparency.
  • Representing consumers and insurers in class action lawsuits filed against dozens of generic drug manufacturers who are accused of fixing the prices of dozens of different generic drugs, In re Generic Pharmaceuticals Pricing Antitrust Litigation, No. 2:16-md-02724-CMR (E.D. Pa.)
  • Representing class of direct purchasers, In re Broiler Chicken Antitrust Litigation, No. 16-cv-08637 (N.D. Ill.)
  • Representing class of direct purchasers, In re Pork Antitrust Litigation, No. 18-cv-01776-JRT-HB (D. Minn.)

Pro bono / Community Service

  • Volunteer judge - YMCA Marin County Youth Court

Educational Background

  • San Francisco School of the Law, J.D., cum laude
  • University of California, Berkeley, B.A., with Honors

Honors

  • American Antitrust Institute: "Outstanding Antitrust Litigation Achievement in Private Law Practice" for role in Cameron v. Apple Inc., No. 4;19-cv-03074 (N.D. Cal.) (2022), https://www.antitrustinstitute.org/aai-congratulates-the-antitrust-enforcement-awards-2022-honorees/
  • American Antitrust Institute: "Outstanding Antitrust Litigation Achievement in Private Law Practice" for his role in In re Capacitors Antitrust Litigation, No. 3:14-cv-03264-JD (N.D. Cal.) (2023), https://www.antitrustinstitute.org/aai-congratulates-the-antitrust-enforcement-awards-2023-honorees/
  • Best Lawyers: "Best Lawyers in America" (2024-present), https://www.saverilawfirm.com/press/six-joseph-saveri-law-firm-llp-attorneys-honored-by-best-lawyers
  • California Daily Journal: "Top Artificial Intelligence Lawyers" (2024), https://www.saverilawfirm.com/press/joseph-saveri-and-cadio-zirpoli-named-top-artificial-intelligence-lawyers-2024-by-the-california-daily-journal
  • California Daily Journal: "Top Antitrust Lawyers" (2024), https://www.saverilawfirm.com/press/joseph-saveri-and-cadio-zirpoli-named-top-antitrust-lawyers-by-the-california-daily-journal
  • Lawdragon 500: Leading Global Plaintiff Lawyers (2025-present), https://www.saverilawfirm.com/press/joseph-saveri-ronnie-s.-spiegel-cadio-zirpoli-diane-rice-and-michael-buchman-named-2026-lawdragon-500-leading-global-plaintiff-lawyers
  • Legal 500: Leading Global Antitrust & Competition Lawyers (2025-present), https://www.saverilawfirm.com/press/joseph-saveri-ronnie-s.-spiegel-cadiozirpoli-named-2026-lawdragon-500-leadingglobal-antitrust-competition-lawyers
  • Lawdragon: 500 Leading Litigators in America (2024-present), https://www.saverilawfirm.com/press/five-saveri-law-firm-partners-named-to-the2026-lawdragon-500-leading-litigators-in-america
  • Lawdragon: 500 Leading Plaintiff Financial Lawyers (2023-present), https://www.saverilawfirm.com/press/five-saveri-law-firm-partners-named-2026-lawdragon-500-leading-plaintiff-financial-lawyers
  • Lawdragon 500: Ranked as one of its 500 Leading Plaintiff Consumer Lawyers (2024-present), https://www.saverilawfirm.com/press/joseph-saveri-cadio-zirpoli-and-ronnie-s.spiegel-named-2026-lawdragon-500-leadingplaintiff-consumer-lawyers
  • Martindale Hubbell: AV Preeminent Peer Rated Attorney, https://www.martindale.com/attorney/cadio-zirpoli-193371/

Office location for Cadio Zirpoli

550 California Street
Suite 910
San Francisco, CA 94104

Phone: 415-857-1682

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