Practice Areas
Antitrust
Unfair Competition
Class Actions
Mergers – Litigation & Agency Advocacy
Mergers – Antitrust Due Diligence
Mergers – HSR Analysis and Filings
Competition Policy and Advocacy
Private Equity, Hedge Fund, and M & A Disputes
Trade Regulation
Intellectual Property, Standard Essential Patents & Trade Secrets
Complex Business Litigation
Appeals
CFIUS Analysis and Findings
Data Breach Litigation
Publications
Articles
9th Circuit Vacates Anticompetition Ruling, Will Rehear Issue En Banc – Co-Author
FTC Files Much-Anticipated Monopolization Charges Against Broadcom – Co-Author
Ninth Circuit’s Higher Hurdle for Antitrust Class Members Weakens the Law When We Need it to be Stronger. Is the Court Having Second Thoughts? – Co-Author
Ninth Circuit Invites Arguments re Review of Its Own Antitrust Class Action Decision – Co-Author
Politics in Antitrust: This Time It’s Different – Author
Bill Designed to Sharpen CFIUS to Better Undercut China’s Momentum – Co-Author
Teams vs. Slack: M&A and Competition Questions in the Collaboration Space – Co-Author
EC Green Lights $8.5B Eyewear Deal, Pending Divestitures in Three Countries – Author
Salesforce-Slack Merger Gets a Second Look from DOJ – Co-Author
Fourth Circuit Affirms Divestiture Remedy in Molded Door Market Merger Challenge – Co-Author
Will the Antitrust Laws Get an Update? – Co-Author
Citing “Unprecedented Times,” Government Suspends Early Terminations of Merger Reviews – Co-Author
The European Commission Accepts Narrow Commitments to Resolve Broadcom Investigation – Co-Author
Emboldened by New Resources and Expanded Authority, Feds Continue 10-Year Look Back at Chinese Investment – Co-Author
POTUS Uses CFIUS to Unwind TikTok Deal, Fears Chinese Government Will Get Americans’ Private Data – Co-Author
California High Court: Interference With ‘At Will’ Contract Requires ‘Separate Wrong’ to be Actionable – Co-Author
Is a Pandemic a Material Adverse Event in M&A? – Co-Author
Treasury’s New Regs Address Impact of Foreign Investments, Other Deals on National Security – Co-Author
INSIGHT: FTC’s Inquiry Into Common Ownership Benefits Markets, Consumers – Author
At Long Last: FTC, DOJ Issue New Draft Vertical Merger Guidelines – Co-Author
FTC Challenges Illumina- PacBio Merger over for Next Gen DNA Sequencing – Author
Billion-Dollar Merger of DNA Sequencing Firms Opposed by U.K., Questioned in U.S. – Author
Beef Buyer Class Action Says ‘Big Beef’ Colluded to Score Record Profits by Manipulating Capacity – Author
Re: A Monopoly Donald Trump Can Pop. – Co-author. December 2016
Neil Gorsuch and Antitrust Law – Co-Author
LIBOR (Gelboim) and the Implications of its Unwritten Rule (2016) – Co-Author
Pay for delay cases illustrate struggle between competition vs. regulation policies (2009) – Author
Economic Recovery: Lesson from Antitrust History (2009) – Author
Litigating Lesson from the Savings & Loan Crisis (2008) – Author
New Uniform Class Action Procedures (2002) – Author
The Consumer Impact Of Illinois Brick, A Short Analysis (1999) – Author
Antitrust, Competition and Democracy: Adam Smith Was Right (1998) – Author
The Microsoft Media ‘Debate’: Decide Based on Evidence and the Law, Not Economic Dogma (1998) – Author
Treatise
California Antitrust & Unfair Competition Law (Third) – Editor-in-Chief & Author
Cohelan, California Class Actions and Roddy – Contributor
RICO in Business and Commercial Litigation. – Contributor
Experience
DANIEL J. MOGIN (Managing Partner) received his B.A. (Economics) from Indiana University and his J.D. from the University of San Diego. Mr. Mogin was admitted to the State Bar of California in 1980. He is also admitted in The Supreme Court of the United States, the United States Court of Appeals for the Ninth, Seventh, and Second Circuits and the United States District Courts for the Southern, Central, Northern and Eastern Districts of California and the District of Columbia.
Mr. Mogin’s practice concentrates on antitrust, unfair competition, and complex and business litigation. He has been selected as lead or liaison counsel in numerous cases and has also frequently served on Steering and Executive committees charged with overall responsibility for direction of complex Multi-District Litigation and Judicial Council Coordination Proceedings. He has participated in some of the largest antitrust class actions in the United States. Mr. Mogin is frequently invited to participate in these cases by other law firms and often consults with law firms engaged in antitrust cases. He has also provided expert testimony in cases and before the California State Senate Judiciary Committee.
Dan Mogin served as a Lawyer Representative for the United States District Court for the Southern District of California at the Ninth Circuit Conference. Mr. Mogin is a past Chair of the Antitrust and Unfair Competition Law Section of the California State Bar (2002-2003). He taught antitrust law for ten years as an Adjunct Professor at the University of San Diego. Mr. Mogin is an emeritus member of the Advisory Board and has contributed to its Report to the Antitrust Modernization Committee (2007) and its Antitrust Presidential Transition Report (2008).
Mr. Mogin was Editor-in-Chief and an author of California Antitrust & Unfair Competition Law (Third), published by the Antitrust and Unfair Competition Law Section of the California State Bar. He has contributed to a number of other legal treatises and is the author of many articles on litigation and antitrust issues. He has been a panelist and lecturer for numerous organizations on complex litigation, antitrust, unfair competition, mergers and acquisitions, and civil procedure.
Mr. Mogin has been selected multiple times as a “Best Lawyer in America” and a “Super Lawyer” for Antitrust Litigation. He has been repeatedly chosen as one of San Diego’s “Top Attorneys” and has been named International Advisory Expert in Unfair Competition and Complex Business Litigation in California. He has been chosen by The Daily Journal as a Top Antitrust Lawyer, by Lawdragon as a Leading Plaintiff Financial Lawyer for Antitrust Litigation and was recognized by the Legal 500 for excellence in his field.
Mr. Mogin has received the Sylvia Siegal Award which recognizes professionals who continue to identify injustices faced by consumers. He has also received the Illinois Trial Lawyer Excellence Award by Jury Verdict Reporters for his work in competition law. His work has also been recognized by the California Assembly, Mothers Against Drunk Driving and the Sierra Club, among others.
Mr. Mogin has been referred to in the national media and legal journals including American Lawyer, Bloomberg Law, Law360, SF Recorder, LA Daily Journal, SD Daily Transcript, Wall Street Journal, NY Times, LA Times, Washington Post, CNN, CBS, NBC, Forbes, Barron's, FTC Watch, and Stein, A License to Steal: The Untold Story of Michael Milken and the Conspiracy to Bilk the Nation (Simon & Schuster 1992).
Awards
Best Lawyers: Litigation - Antitrust (2018-2025)
Best Lawyers
2025
Best Lawyers: Mass Tort / Class Actions - Plaintiffs (2018-2025)
Best Lawyers
2025
Best Lawyers: Commercial Litigation (2025)
Best Lawyers
2025
Top Plaintiff Attorney
California Lawyer Daily Journal
2022
Top Antitrust Lawyer
California Lawyer Daily Journal
2020
Consumer Rights Leader
California Legislature - Assembly
2018
Complex Litigation - California
International Advisory Experts
2018
Illinois Trial Lawyer of the Year (Federal)
Jury Verdict Reporter
2018
Outstanding Service Award
Legal Aid Society of San Diego, Inc.
2008
Outstanding Service Award
Legal Aid Society of San Diego, Inc.
2010
Community Leader
Mothers Against Drunk Driving (M.A.D.D.)
2007
Leaders in Law (Finalist)
San Diego Business Journal
2021
Top San Diego County Attorneys
San Diego Daily Transcript
2005
Outstanding Legal Achievement
Sierra Club
2010
Antitrust Litigation (2009, 2012 – 2025)
Super Lawyers
2025
Sylvia Siegel Champion Consumer Rights Leader
The Utility Reform Network
2018