Dori Hanswirth co-leads Arnold & Porter's Technology, Media & Telecommunications industry group and is a litigator in the firm's Media & Entertainment practice, bringing more than 20 years' experience for clients in the news, technology, and entertainment industries, with a focus on First Amendment, trademark, defamation, right of publicity, and copyright law/fair use.

Ms. Hanswirth advises individual clients and organizations on issues related to reputation, brand protection, and media, copyright, and trademark in a range of other industries, including fintech, internet services, non-profits and social media.


  • National news network and two of its on-air anchors in the successful defense against first-of-its-kind defamation claim based on fake news. Won summary judgment in district court; that decision was affirmed by the US Court of Appeals for the First Circuit.
  • Global technology company in numerous trademark matters, providing enforcement strategy and counseling concerning software, hardware, advertising, and mobile/telecommunications products and services, and representation in multiple proceedings before the US Trademark Trial and Appeal Board pertaining to its most well-known brands.
  • Investigative journalist in defending her right to maintain the secrecy of her sources in reporting on the Batman movie theater mass shooting, leading to a landmark decision in the New York Court of Appeals.
  • Financial technology companies in branding and trademark prosecution and enforcement strategies for mobile applications, including proceedings in the United States Patent and Trademark Office.
  • Well-known news anchor in litigation against a toy company that sold a hamster doll with the same name.
  • Global media organization in protecting copyright interests against social media platform and radio streaming service that used content without permission.
  • Multiple journalists in advising on responses to grand jury subpoenas and other requests for testimony or documents relating to confidential or unpublished newsgathering; successfully prevented any from having to testify.
  • One of the country's largest digital news platforms in multiple litigation and pre-litigation matters involving defamation, reporters' privilege, copyright, trademark, and the Americans with Disabilities Act.
  • National news organization in litigation and ultimately persuaded a Senatorial candidate to cease publication of a campaign advertisement that used television news content and branding without authorization; negotiated without need for litigation voluntary take-downs of similar advertisements with multiple other national campaigns.


Best Lawyers
Trademark Law (2020-2022)
Managing Intellectual Property
“IP Star” (New York) (2015, 2020-2021)
The Legal 500 US
Intellectual Property: Copyright (2011-2021)
Intellectual Property: Trademarks – Litigation (2019-2021)


  • JD, Benjamin N. Cardozo School of Law, Yeshiva University, cum laude
  • BA, University of Pennsylvania, cum laude, with distinction
  • New York
  • Supreme Court of the United States
  • US Court of Appeals for the First Circuit
  • US Court of Appeals for the Second Circuit
  • US Court of Appeals for the Tenth Circuit
  • US District Court, District of Colorado
  • US District Court, Eastern District of New York
  • US District Court, Southern District of New York
  • US District Court, Western District of New York
  • Member, International Trademark Association, Public and Media Relations Committee (2018-2020)
  • Member, American Bar Association Forum on Communications Law (2015-present)
  • Member, International Trademark Association, Right of Publicity Committee (2020-2021)
  • Member, New York State Bar Association Committee on Media Law (2014-present)
  • Member, Media Law Resource Center (1994-present)
  • Co-chair, Commercial and Business Litigation Committee American Bar Association (2011-2014)

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