David Zimmer is an associate in the firm’s Litigation Department, and a member of its Appellate Litigation Practice. Mr. Zimmer focuses on appellate matters and complex commercial litigation, and has litigation experience in a wide range of areas, including administrative law, intellectual property, antitrust and consumer financial services. He has drafted and contributed to briefs for cases before the United States Supreme Court, six of the federal courts of appeals, as well as district and state courts throughout the country. He maintains an active pro bono practice, focusing largely on immigration, including briefing and arguing cases before the Second and Ninth Circuit Courts of Appeals. Prior to joining Goodwin in 2013, Mr. Zimmer clerked for Justice Elena Kagan of the U.S. Supreme Court, and Judge William A. Fletcher of the U.S. Court of Appeals for the Ninth Circuit.

Areas of Practice




Since joining Goodwin, Mr. Zimmer has been involved in litigation matters in numerous federal courts of appeal and district courts, as well as California and Massachusetts state courts. His recent significant representations include:

  • On behalf of a major banking client, co-authored briefs persuading the Supreme Court to grant certiorari and vacate an adverse appellate decision concerning the scope of the Fair Housing Act. 
  • Co-authored winning briefs in a significant appeal in the Federal Circuit about the scope of “covered business method” review of patents by the Patent Trial and Appeal Board. Managing IP named the case one of 2016’s “Milestone Cases.”
  • On behalf of four nationwide mortgage lenders, co-authored briefs persuading the Ninth Circuit to dismiss a False Claims Act lawsuit demanding a multi-billion-dollar recovery.
  • Co-authored briefs persuading a California trial judge to grant judgment notwithstanding the verdict on multi-million-dollar tort judgments against mortgage lender.
  • Persuading the Ninth Circuit, through briefing and oral argument, to grant a petition for review from the Board of Immigration Appeals in a pro bono matter challenging the BIA’s decision that our client was removable.
Professional Experience

Mr. Zimmer previously served on the Board of Directors for La Raza Centro Legal, a nonprofit organization in San Francisco representing immigrants’ rights. Prior to joining Goodwin, Mr. Zimmer served as a law clerk to Justice Elena Kagan of the Supreme Court of the United States, and Judge William A. Fletcher of the U.S. Court of Appeals for the Ninth Circuit. He also previously worked as an associate at Keker & Van Nest.


While attending law school, Mr. Zimmer was an Articles Editor and the Forum Chair for the Harvard Law Review.

In The News







J.D., 2010
Harvard Law School
(magna cum laude)
M.P.A/I.D., 2010
Harvard Kennedy School of Government
B.A., 2004
Harvard College
(magna cum laude)


2012 to 2013 U.S. Supreme Court, Honorable Elena Kagan
2010 to 2011 U.S. Court of Appeals for the Ninth Circuit, Honorable William A. Fletcher





U.S. Supreme Court
U.S. District Court for the Northern District of California
U.S. Court of Appeals for the First Circuit
U.S. Court of Appeals for the Second Circuit
U.S. Court of Appeals for the Ninth Circuit
U.S. Court of Appeals for the District of Columbia Circuit
U.S. Court of Appeals for the Federal Circuit
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Our clients rely on us for world-class advisory services, counsel on complex transactional work and high-stakes litigation. Specializing in matters involving the financial, life sciences, private equity, real estate, and technology industries, we use a collaborative, cross-disciplinary approach to resolve our clients’ most challenging issues. To find out more, please contact us.
Unsere Kunden verlassen sich auf uns für erstklassige Beratungsdienste, beraten über komplexe Transaktionsarbeiten und High-Stakes-Prozesse. Spezialisiert auf Angelegenheiten der Finanz-, Life-Sciences-, Private-Equity-, Immobilien-und Technologie-Industrie, verwenden wir eine kooperative, interdisziplinäre Ansatz zur Lösung unserer Kunden am schwierigsten Fragen. Um mehr zu erfahren, kontaktieren Sie uns bitte.


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