Skip to main content

Ariana J. Tadler

Attorney Profile

Top Rated Consumer Law Attorney in Manhasset, NY

Tadler Law LLP
22 Bayview Ave, Suite 200
Manhasset, NY 11030
Phone: 212-651-6879
Fax: 212-868-1229
Selected to Super Lawyers: 2010 - 2021
Licensed in New York Since: 1993
Practice Areas: Consumer Law (40%), E-Discovery (20%), Business Litigation (10%), Civil Litigation: Plaintiff (10%), Personal Injury - General: Plaintiff (10%), Securities Litigation (10%)
  • Free Consultation
Attorney Profile

Founder and managing partner of Tadler Law LLP, Ariana J. Tadler has represented clients in New York City, New York, and the surrounding areas in business and civil matters for almost three decades. She focuses on protecting consumers from corporate fraud, handling complex litigation and managing securities. Her clients include high net worth investors, middle market companies, municipalities and investment institutions as well as consumers and individuals. She has a reputation for passionate advocacy and defense of her clients’ interests.

After obtaining her Bachelor of Arts degree from Hamilton College in 1989, Ms. Tadler went on to earn her Juris Doctor from Fordham University School of Law in 1992. Since then, she has received many awards and honors, including several for her leadership in the arena of e-discovery.

Ms. Tadler is admitted to practice in New Jersey and New York state courts, as well as numerous federal district and appellate courts. She advocates for injured people, and manages and litigates consumer class actions, serving clients in federal, state and multidistrict proceedings. For her high ethical standards and numerous successes, Ms. Tadler holds the highest peer rating of AV Preeminent* from Martindale-Hubbell.

Tadler Law LLP has been certified by the Women’s Business Enterprise National Council as a women-owned litigation boutique firm. Ms. Tadler has also received a Band 1 ranking from Chambers and Partners for her e-discovery experience and proficiency, her professional standards and her client-focused services.

To pass on her extensive legal knowledge and skills, Ms. Tadler lectures at law schools, professional conferences and other speaking engagements, as well as authoring articles and serving as committee chair on e-discovery for a preeminent nonprofit research and educational institute that advances the study of law and policy.

* AV®, AV Preeminent®, Martindale-Hubbell Distinguished and Martindale-Hubbell Notable are certification marks used under license in accordance with the Martindale-Hubbell certification procedures, standards and policies. Martindale-Hubbell® is the facilitator of a peer review rating process. Ratings reflect the anonymous opinions of members of the bar and the judiciary. Martindale-Hubbell® Peer Review Rating™ fall into two categories – legal ability and general ethical standards.

Practice Areas
  • 40%Consumer Law
  • 20%E-Discovery
  • 10%Business Litigation
  • 10%Civil Litigation: Plaintiff
  • 10%Personal Injury - General: Plaintiff
  • 10%Securities Litigation
Focus Areas

Fraud, Trade Secret, Personal Injury - Plaintiff


12 Years Super Lawyers
  • Super Lawyers: 2010 - 2021

About Ariana J. Tadler

First Admitted: 1992, New Jersey

Professional Webpage:

Bar/Professional Activity

  • U.S. District Court for the District of New Jersey, 1992
  • U.S. District Court, Eastern District of New York, 1993
  • U.S. District Court, Southern District of New York, 1993
  • U.S. Court of Appeals Second Circuit, 2010
  • U.S. Court of Appeals Third Circuit, 1998
  • U.S. Court of Appeals First Circuit, 2015
  • New York, 1993
  • New Jersey, 1992
  • Women to Know, Advisory Board
  • Women in eDiscovery, Member
  • The Sedona Conference®, Board of Directors, 2013-2017
  • The Sedona Conference®, Past Chair of the Steering Committee for Working Group 1 on Electronic Document Retention and Production, 2008-2012
  • New York American Inns of Court, Emeritus Member
  • The Sedona Conference®, Chair Emeritus of WG 1
  • New York State Bar Association, Member
  • New York American Inns of Court, Vice President, 2016-2019
  • Mobilization for Justice, Board Member
  • National Consumer Law Center, Member
  • National Association of Consumer Advocates, Working Member
  • Mobilization for Justice, Chair, 2008-2010
  • American Association for Justice, Member
  • Georgetown University Law Center’s Advanced e-Discovery Institute, Advisory Board Member
  • Fordham Law Small to Midsize Firm Leaders, Dean's Advisory Council
  • Federal Bar Council, Member
  • Bloomberg Law Litigation Innovation Board, Member
  • American Bar Foundation, Life Fellow
  • American Bar Association, Member
  • Appointed by United States Supreme Court Justice John Roberts to serve on the Federal Civil Rules Advisory Committee. Ariana is continuing to serve her 3-year term, 2017

Scholarly Lectures/Writings

  • Henry J. Kelston, Ariana J. Tadler, Paul McVoy. "Technology-Assisted Review From the Plaintiffs' Side." (Law Technology News, 10/12/2012)
  • Ariana J. Tadler and Henry J. Kelston. "Fears of Discovery Burden are Exaggerated." (The National Law Journal, 12/19/2011)
  • Presenter, "30(b)(6) Corporate Depositions" (AAJ New Lawyers’ Division, 5/23/18)
  • Ariana J. Tadler. "APB to Requesting Parties: Preparing for Proportionality." (Thomson Reuters: Practical Law The Journal Litigation, December 2015/January 2016, pp 28-31)
  • Ariana J. Tadler and Henry J. Kelston. "What You Need to Know About the New Rule 37(e)." (Trial© American Association for Justice, January 2016, pp 20-25)
  • Presenter, "Electronic Discovery for the Plaintiffs’ Class Action Lawyer" (360 Advocacy: Class Action Roundtable, 4/13/18)
  • Presenter, "Best Practices for Handling Massive Troves of Sensitive Data" (Mass Torts Judicial Forum with the Hon. Marina Corodemus, 4/23/18)
  • Presenter, "Discovery Under (26)(b)(1): Proportionality" (HB Litigation: Class Action Mastery, 5/10/18)
  • Presenter, "What a Class Action Attorney Needs to Know to Negotiate an ESI Protocol" (360 Advocacy: Class Action Roundtable, 4/30/19)
  • Presenter, "The Importance of e-Discovery in Your Practice" (State Bar of Georgia, 6/18/18)
  • Presenter, "They’ve Been Served: What Should Go Out with Your Complaint and How to Handle the Initial Stages of Your Lawsuit" (State Bar of Georgia, 6/18/18)
  • Presenter, "The Critical Importance of the Rule 26 Conference or its Equivalent: What You Must Do" (State Bar of Georgia, 6/19/18)
  • Presenter, "If You Must: Getting the Most from Search Terms While Preventing the Opposition From Hiding the Ball" (State Bar of Georgia, 6/19/18)
  • Presenter, "May it Please the Court: Winning Arguments Before a Judge With Little or no ESI Experience" (State Bar of Georgia, 6/19/18)
  • Presenter, "Discovery in the Digital Age" (AAJ Annual Convention, 7/9/18)
  • Presenter, "Crafting the 30(b)(6) Notice" (AAJ: Advanced 30(b) Seminar: The Most Powerful and Underutilized Tool, 11/7/18)
  • Presenter, "Big Challenges in the City of Big Shoulders" (American Bar Association: 2018 National Institute on Class Actions, 10/18/18)
  • Presenter, "The Great Debate: In re Fried Chicken, Order of Special Master Regarding ESI Search Methodologies" (Georgetown Law CLE: 2018 Advanced eDiscovery Institute, 11/15/18)
  • Presenter, "Cases Filed, Claims Advanced and Discovery" (HarrisMartin’s Marriott Data Breach Litigation Conference, 1/29/19)
  • Teaching, "2019 E-Discovery Distinguished Speaker" (University of Florida Fredric G. Levin College of Law, 3/11/19)
  • Co-Author, E-Discovery Today: The Fault Lies Not In Our Rules, Federal Courts Law Review, 2011
  • Presenter, "2019: A Refined Approach to Discovery in Federal Practice" (National Association of Consumer Advocates, 6/13/19)
  • Presenter, "Considerations When Negotiating ESI/Protective Orders" (AAJ Annual Convention, 7/29/2019)
  • Author, Court Programs Working Toward Normalcy in E-Discovery, New York Law Journal, 2011
  • Co-Author, Derivative and Transactional Litigation: The Power of a Single Share, The VOICE, 2011
  • Co-Author, Toward a Less Hostile Discovery Process, TRIAL, 2010


  • Lawdragon 500 (2009-2012)
  • Chambers USA: America’s Leading Lawyers for Business (2014)
  • Benchmark Top 250 Women Litigators (2014)
  • Who’s Who Legal Litigation: Leading Practitioner-E-Discovery (2015-2018)
  • Benchmark Litigation: Star (2015)
  • Super Lawyers (2010-2019)
  • American Bar Association’s Legal Technology Resource Center’s (LTRC) Women of Legal Tech (2017)
  • Chambers USA: Band 2 (2014-2016)
  • Chambers USA-Nationwide: BAND 1-Litigation: E-Discovery (2017-2019)
  • Chambers Global Guide: Leading Lawyers in E-Discovery (2015-2019)
  • Super Lawyers “Top 100 Overall Lawyer in New York Metro” (2015-2019)
  • Super Lawyers “Top 50 Women Attorneys New York Metro Area” (2015-2019)
  • AV® Preeminent Peer Review Rated, Martindale Hubbell
  • Ariana has repeatedly been recognized by Chambers and Partners in its Band 1 rankings for e-discovery.  She is the only plaintiffs' lawyer to have achieved this recognition; she has done so year after year., Band 1 - E-Discovery (National and Global), Chambers and Partners, 2020
  • Ariana has been recognized as a 2020 Plaintiffs’ Lawyers Trailblazer by the National Law Journal (NLJ). The recognition is given annually to honor lawyers who “make their mark in various aspects of legal work on the Plaintiffs’ side.”  Recognizing her pioneering achievements in the area of e-discovery, the NLJ selected Ms. Tadler for this year’s prestigious list of plaintiffs’ lawyers. A veteran class action and commercial litigator, Ms. Tadler is considered one of the nation’s foremost authorities on all aspects of e-discovery. The NLJ noted that “she pioneered the establishment of an e-discovery practice group within a plaintiffs’ firm.”, Plaintiffs' Lawyers Trailblazer, National Law Journal, 2020
  • ALM: 2014 Women Leaders in the Law, American Lawyer Media, 2014


  • Fero et al v. Excellus Health Plan, Inc. et al
  • Frito-Lay North America, Inc. “All Natural” Litigation
  • Republic of Colombia et al v. Diageo North America, Inc et al
  • In re Initial Public Offering Securities Litigation
  • Ener1 Inc. v. PricewaterhouseCoopers LLP
  • Torres, et al. v. Wendy’s International, LLC
  • In re ARIAD Pharmaceuticals, Inc. Securities Litigation
  • General Mills, Inc. Kix Cereal Litigation
  • In re Conagra Foods, Inc.
  • In re Intuit Data Litigation
  • In re Target Corporation Customer Data Security Breach Litigation
  • In Re: Yahoo! Inc. Customer Data Security Breach Litigation, No. 16-md-02752-LHK
  • In re: Equifax, Inc. Customer Data Security Breach Litigation, No. 1:17-md-2800-TWT
  • Jasper Schmidt et al. v. Facebook, Inc., No. C 18-05982 WHA
  • In re Apple Inc. Device Performance Litigation, No. 5:18-md-02827-EJD
  • In re Marriott International Inc., Customer Data Security Breach Litigation , MDL No.: 19-md-2879

Pro bono/Community Service

  • Ariana J. Tadler serves on the board for Mobilization for Justice (previously known as MFY Legal Services).  She previously served as Chair of the Board and is the 2020 Co-Chair of MFJ's major fundraising event which will be held virtually on July 15, 2020.

Educational Background

  • B.A., Hamilton College, 1989
Show More
Office Location for Ariana J. Tadler

22 Bayview Ave
Suite 200
Manhasset, NY 11030

Phone: 212-651-6879

Fax: 212-868-1229

Last Updated: 6/30/2021

Page Generated: 1.0509281158447 sec