John Rosenthal continues to be a globally recognized practitioner in the field of e-discovery, privacy, data security and artificial intelligence. John has been ranked in Chambers USA from 2012–2025, and in Chambers Global from 2013–2025 as one of the nation’s top lawyers in e-discovery litigation practice. He is one of four lawyers ranked as “Star Individual” for E-Discovery & Information Governance. He has also been recognized in The Legal 500 US from 2019–2024 as a “Leading Lawyer” for eDiscovery. Clients remarked that “John Rosenthal is one of the best e-discovery lawyers in the U.S. He was also recognized in the 2023 and 2024 editions of The Legal 500 US as a “Key Lawyer” in the area of Dispute Resolution: Product Liability, Mass Tort and Class Action – Defense: Consumer Products.

In addition, John has been recognized in the eDiscovery section of Who’s Who Legal: Litigation. He is recognized in Lawdragon’s “500 Leading Litigators in America” for Complex Commercial, Antitrust, and IP Litigation (2023–2025) and in the 2024-25 Lawdragon’s “500 Leading Global Cyber Lawyers” for Litigation, Privacy, Data Breach. John has received the Distinguished Service Award by Electronic Discovery Institute, named a National Law Journal Trailblazer in litigation and recognized by the Financial Times as one of the most innovative lawyers in the United States.

Over the last year, John continued to be involved in some of the largest and most complex matters in the U.S., including MDLs, consolidated proceedings, and class actions involving some of the most novel issues facing multiple industries to include automotive, agricultural, technology, financial and insurance.

With his technical background, John has become a leader advising clients as well as software providers regarding the adoption and use of Generative AI within the legal industry to include the use of Generative AI in e-discovery for relevance determination, fact development, privilege analysis, and document analysis. In 2025, he was also name by Lawdragon as one of the 100 Leading AI and Legal Technical Advisors in the United States. John is also a co-author of the ABA’s recent publication entitled Artificial Intelligence: Legal Issues, Policy, and Practical Strategies (2024). John sits on the AI Advisory Board of several of the large e-discovery providers in this space.

John operates as national counsel for several Fortune 500 companies. John has continued his work in e-discovery on some of the highest profile MDL and class and collective matters in the U.S. He continues to actively work in the areas of privacy and data security, where Winston’s practice group assists clients in the compliant international transfer of data in the context of litigation and regulatory investigations. Over the last year, John has been heavily involved in assisting companies in the evaluation, adoption and compliance with AI in the context of litigation.

John continues to be considered an industry thought leader and is actively engaged through Lawyers for Civil Justice (LCJ) in federal and state rules reform proposed changes to the Federal Rules relating to the admissibility of AI.

John’s thought leadership extends through his active leadership as continued co-chair of the PLI’s Annual eDiscovery Program, a Board Member of Georgetown Advanced eDiscovery Institute (including member of the planning board), and his status as a former Steering Committee member of The Sedona Conference Working Group 1 (evolving domestic e-Discovery issues and best practices) and as a member of Working Group 6 (international and cross-border e-Discovery issues) and Working Group 11 (data security and privacy issues).

He is a member of the E-Discovery Committee of the District of Columbia. He is intimately involved in judicial education, including as a contributing author of the soon to be published Federal Judge’s Guide to eDiscovery (5th ed.). John appeared as faculty or lecturer on a wide variety of programs and industry events, including:

• Updated Legal Use Cases for Generative AI in the Practice of Law & their Ethical Implications, Lawline webinar, October 2025
• 2025 PLI Hot Topics in Electronic Discovery 2025: What Corporate and Outside Counsel Need to Know Using Generative AI in eDiscovery, October 2025
• 2025 Pathfinders Summit: Practice Impact: Frome One Lense to Many – Gen AI Adoption, September 2025
• Federal Judge’s Guide to E-Discovery (4.0), Electronic Discovery Institute, Contributing Author, 2025
• Implications of Generative AI on Rules Reform, Lawyers for Civil Justice Mid-Year Meeting, Dec. 2024
• Guest Lecture, Generative AI and E-Discovery, St. Mary’s Law School, Nov. 2024
• Keynote Address, Fireside Chat with Winston Weinberg, CEO of HarveyAI, Georgetown Advanced E-Discovery Institute, Nov. 2024
• Winston Decoding AI Webinar – “Products Liability Litigation and Unfair Competition Risks from Generative AI,” Oct. 2024
• “Adoption of Generative AI Within a Law Firm or Legal Department: Hype vs. Reality,” EDI Leadership Summit, Moderator, Oct. 2024
• “Generative AI – Hype or Reality,” 2024 EDI Summit, Oct. 2024.
• Co-Chair, PLI 2024 Program on eDiscovery, Sept. 2024.
• “The Ethics of Using Generative AI in Litigation,” Sept. 2024.
• “Generative AI for Legal Uses,” Arizona Bar Association, Lecturer, Spring 2024
• “Legal Use Cases for Generative AI and their Ethical Implications,” Lawline Webinar, Lecture, June 2024
• “eDiscovery and Hyperlinked Files: Considerations for Collecting, Searching and Producing Modern Attachments,” Strafford Webinar, Faculty, June 2024
• “Artificial Intelligence: Legal Issues, Policy, and Practical Strategies,” American Bar Association, Contributing Author, 2024
• “USPTO Releases Updated Guidelines for AI-Related Patent Eligibility,” Winston & Strawn LLP Client Alert, Co-author, July 22, 2024
• Comment Letter on Proposed New Rule 16.1 regarding MDL Litigation, Feb. 9, 2024
• Comment Letter on Proposed Rules 16(b) and 26(f) on Privilege Logging, Feb. 2024
• “Natural Language AI and the Practice of Law,” Lecturer, Oct. 2023
• Preservation in an Ever-Changing World, EDI Leadership Summit (moderator), Oct. 2023
• Practical Effects of the 2015 Changes to the Federal Rules on Discovery, Rand Symposium on E-Discovery (panelist), Sept. 2023
• Slack, Teams, WhatsApp – Oh My – Discovery of Newer Data Types, Winston & Strawn (panelist), Jun. 2023
• Hot Topics in E-Discovery – Virtual Meetings, Ephemeral Data, Collaboration Tools, PLI (panelist), May 2023