Jonathan Hacker
Partner
Disclaimer
Thank you for your interest. Before you communicate with one of our attorneys, please note: Any comments our attorneys share with you are general information and not legal advice. No attorney-client relationship will exist between you or your business and O’Melveny or any of its attorneys unless conflicts have been cleared, our management has given its approval, and an engagement letter has been signed. Meanwhile, you agree: we have no duty to advise you or provide you with legal assistance; you will not divulge any confidences or send any confidential or sensitive information to our attorneys (we are not in a position to keep it confidential and might be required to convey it to our clients); and, you may not use this contact to attempt to disqualify O’Melveny from representing other clients adverse to you or your business. By clicking "accept" you acknowledge receipt and agree to all of the terms of this paragraph and our Disclaimer.
Jon Hacker chairs O’Melveny’s Supreme Court and Appellate Litigation Practice and resides in the firm’s Washington, DC office.
Top-ranked by Chambers USA since 2012, Jon is regarded by peers as “a phenomenal writer” and “a forceful advocate.” He has authored briefs in dozens of US Supreme Court cases at both the merits and certiorari stages. He has argued six cases in the US Supreme Court and appeals in every federal circuit. He has also briefed and argued appeals in numerous state courts, including New York, California, Ohio, Pennsylvania, Florida, Massachusetts, New Jersey, Maine, Montana, Nebraska, and the District of Columbia. Clients praise him as “such a down-to-earth person but an unparalleled oral advocate.”
Jon’s appellate work has resulted in reversals of trial-court judgments (including jury verdicts) worth tens of millions and even billions of dollars. He has also briefed and argued many trial-level matters, has conducted discovery and depositions in complex litigation matters, and has handled several trials. Jon earns repeated praise for his “outstanding written product,” with peers in the field impressed by his “bullet-proof performances in difficult cases.”
Jon’s areas of expertise include federal constitutional law, insurance, ERISA, criminal law and procedure, and federal jurisdiction and procedure. He is highly regarded by leading industry publications, including the American Lawyer as “Litigator of the Week”, Wall Street Journal as a “Rising Appellate Star”, National Law Journal as “Appellate Lawyer of the Week”, Chambers USA and Legal 500 as a leading nationwide practitioner, Benchmark Litigation as a “Local Litigation Star”, and Best Lawyers in America as a recognized lawyer since 2010.
Jon was a Lecturer in appellate advocacy for five years at the Harvard Law School, where he co-founded and co-directed the HLS Supreme Court and Appellate Advocacy Clinic. He is Co-Chair of the Supreme Court Amicus Committee of the National Association of Criminal Defense Lawyers.
Honors & Awards
- Recognized by Best Lawyers® for Appellate Practice in Washington, DC (2022-2023); Jon has been listed in Best Lawyers® since 2010
- Recognized by Chambers USA for Appellate Law (2021-2022)
- Recognized by The Legal 500 US as a Leading Lawyer for Appellate (2020 & 2022); Listed in The Legal 500 US since 2017
- Repeatedly selected as a leading US appellate lawyer by Chambers
- “Superstar Of Insurance Law,” Insurance Business Magazine (2021)
- “Local Litigation Star,” Benchmark Litigation (2018-2020, 2023)
- “Litigator of the Week,” The American Lawyer (August 2015)
- “Rising Appellate Star,” The Wall Street Journal (January 2011)
- “Appellate Lawyer of the Week,” National Law Journal (2011)
Admissions
Bar Admissions
- District of Columbia
- Maryland
Court Admissions
- US Supreme Court
- All federal circuit courts of appeal
- US District Court, District of Columbia
Education
- University of Michigan, J.D., 1995: magna cum laude; Order of the Coif; Henry M. Campbell Memorial Scholarship (Law School’s highest award for graduates); Managing Editor, 1994-95, Associate Editor, 1993-94, Michigan Law Review; Winner, Campbell Moot Court Competition, 1994
- Harvard College, A.B., 1990 (Social Studies): cum laude
Professional Activities
Clerkships
- Honorable Bruce M. Selya, US Court of Appeals, First Circuit
Member
- Co-Chair, National Association of Criminal Defense Lawyers, Supreme Court Amicus Committee
- Barrister, Edward Coke Appellate Inn of Court
Co-Founder and Co-Director
- HLS Supreme Court and Appellate Advocacy Clinic, Harvard Law School