Ariel Seidner


  • Ariel Seidner
  • Phone: +1 212 404 8763

    Import to Address Book

  • Duane Morris LLP
    230 Park Avenue, Suite 1130
    New York, NY 10169-0079
  • Duane Morris LLP
    1540 Broadway
    New York, NY 10036-4086

Ariel Seidner is an associate at Duane Morris in New York, practicing in intellectual property law, with a primary focus on technology transactions and complex commercial contracts. Ariel also regularly advises clients on intellectual property and technology matters in connection with mergers and acquisitions to assess and mitigate risks in corporate transactions. 

Technology Transactions

Ariel possesses extensive experience in technology transactions and the implementation of different software types into business operations, advising on:

  • Software development, distribution, and resale
  • Licensing for both licensors and licensees
  • Integration with third-party applications
  • On-premise and cloud-based applications
  • Open source software licensing and incorporation into proprietary software

Intellectual Property and Commercial Transactions

Ariel helps clients maximize value from owned, licensed, and jointly developed commercial assets while minimizing exposure to risk and liabilities. Ariel’s experience negotiating and drafting complex commercial contracts spans across industries, including consumer-branded products, entertainment, media and communications, eSports and gaming, and energy

Her experience structuring agreements for bespoke transactions includes those involving:

  • Product manufacture, sale, distribution, and resale (including UCC Article 2)
  • Joint ventures, co-development, and strategic collaboration
  • Co-branding and marketing
  • Professional services
  • Content creation, licensing, and privacy and publicity rights

Ariel also advises on the protection and maintenance of IP including copyrights, trademarks, and domain names, and defense against online threats to IP portfolios, such as:

  • Digital Millennium Copyright Act (DMCA) violations
  • Copyright and trademark infringement
  • Cyber-squatting, phishing, and other deceptive practices involving domain names and websites

Privacy and Information Security

Ariel counsels clients in navigating the landscape of privacy and information security (internally and when transacting with third parties), including compliance with federal privacy laws in highly regulated sectors such as healthcare, financial services, and education, as well as state-specific data privacy laws, advising on:

  • Data use, collection, storage, transfer, and retention
  • Privacy disclosures and data subject requests
  • Legal and regulatory obligations
  • Security standards, systems integrity, and IT infrastructure

Artificial Intelligence

In the emerging area of artificial intelligence (AI), Ariel has extensive knowledge on the use of data in machine learning, including considerations related to sources of training data, usage permissions and conditions, and compliance with privacy laws. She advises on the use of AI in business operations and in commercial transactions, and has conducted audits of AI usage in connection with diligence for mergers and acquisitions.


Prior to joining Duane Morris, Ariel was legal counsel to an AI-powered B2B marketing technology company, where she negotiated and drafted SaaS agreements, data processing agreements, and business associate agreements. Ariel also has prior experience at a boutique law firm focusing on matters related to digital assets and blockchain-based technology applications.

Ariel is a magna cum laude graduate of Cornell University and a graduate of Fordham University School of Law, where she was associate editor of the Fordham Journal of Corporate and Financial Law. She spent her second year of law school as an intern at the enforcement division of the U.S. Commodity Futures Trading Commission and her third year as an intern in the Asset Management Group at the Securities Industry and Financial Markets Association.


  • New York
  • U.S. District Court for the Southern District of New York


  • Fordham University School of Law, J.D., 2019
    - Associate Editor, Fordham Journal of Corporate and Financial Law
  • Cornell University, B.A., magna cum laude, 2016


  • Duane Morris LLP
    - Associate, 2021-present
  • Acoustic LP
    - Legal Counsel, 2020-2021
  • Kelman PLLC
    - Law Clerk, 2019-2020

Selected Speaking Engagements

  • Speaker, “Get Smart with AI: Strategic Contracting to Reduce Risk,” Duane Morris Webinar, November 15, 2023
  • Participant, ChIPs Mock Pitch Program, May 18, 2023
  • Presenter, "Is There Professional Negligence in a Cybersecurity Contract Obligation?" Duane Morris LLP Webinar, December 2, 2021

Selected Publications