Tadler Law LLP > New York, United States > Firm Profile

Tadler Law LLP
NEW YORK 10119
United States

Dispute resolution > E-discovery Tier 2

Fully certified by the Women's Business Enterprise National Council, Tadler Law LLP is a women-owned and operated litigation boutique that has gone from strength to strength under the leadership of New York-based Ariana Tadler. The firm is known for its representation of plaintiffs in sprawling and complex class action litigation suits. Leading litigator Tadler is noted for her experience of class action-related developments, including data breaches, cyber and privacy, and e-discovery issues. San Francisco-based A.J. de Bartolomeo jointly heads the practice, and has over 30 years’ experience in litigation and regulatory risk; she also provides training on e-Discovery issues. In November 2019, Brian Morrison joined as partner in New York from Labaton Sucharow LLP, and in May 2020, Melissa Clark left for Fegan Scott.

Practice head(s):

Ariana Tadler; A.J. de Bartolomeo

Other key lawyers:


‘Ariana Tadler is a highly skilled and very experienced practitioner for plaintiffs in the area of e-discovery’.

‘Ariana Tadler is a skilled advocate but is also very good at mediating and crafting e-discovery solutions to resolve disputes.’ 

‘It is one of few high-powered women-owned firms’.

‘Ariana Tadler is a a skilled tactician and strategist’. 

‘Ariana Tadler is a smart, seasoned litigator who know how to get things done and has excellent relationships across the aisle with defense counsel at all the major firms’. 

‘Ariana Tadler is a real asset in a litigation’.

‘The firm is incredibly strong in how to deal with assembling, analyzing and generally dealing with electronic discovery.’

‘Ariana Tadler takes a very hands-on approach to all matters’.

Key clients

Hope Solo

Oriana Cyprus

J. B Hunt Transport Services, Inc.

Tadler Law LLP is a women-owned litigation boutique that represents consumers, investors, and businesses in complex and class action litigation nationwide. Founded in 2019 by Ariana J. Tadler, a leading plaintiffs’ litigator and a pioneer in e-discovery law, the firm offers 20-plus years of litigation experience in the areas of complex and class action litigation, e-discovery, contract negotiation and legal risk consulting.

Tadler Law partners with law firms and clients looking to diversify their legal teams and offers the highest level of litigation experience. Tadler Law’s partners have handled hundreds of cases in federal, state, and bankruptcy courts and collected over a billion dollars for our clients collectively throughout our years of practice. The firm is at the forefront of complex and class action litigation.

The firm advises high-net-worth investors, investment institutions, middle-market companies, municipalities, and consumers in a variety of matters. Tadler Law also served as special discovery counsel on behalf of parties to complement their in-place litigation teams.

Capitalizing on decades of courtroom experience in complex and class action cases, the firm regularly litigates high-profile, national and international matters, involving Fortune 100 parties represented by top AmLaw firms. The firm is known for deploying state-of-the-art technology to efficiently achieve creative and effective solutions for its clients. The firm is uniquely positioned as a leading authority in the plaintiffs’ bar in the field of electronic discovery, having its founding partner repeatedly earned Litigation: E-Discovery Band 1 USA and Global recognition from Chambers and Partners. Tadler law is the only plaintiffs’ firm that has a Band 1 ranked lawyer in Chambers and Partners E-Discovery rankings year after year. All of Tadler Law lawyers are highly trained and experienced litigators and E-Discovery practitioners.

Founder and Managing Partner Ariana J. Tadleratadler@tadlerlaw.com212-946-9300
Partner A.J. de Bartolomeoajd@tadlerlaw.com212-631-8689
Partner Brian R. Morrisonbmorrison@tadlerlaw.com646- 924-1040
Director of Operations and Administrative Services Sheba A. Makonnensmakonnen@tadlerlaw.com212-946-9300
Ariana Tadler  photo Ariana Tadler Founder and Managing Partner
A.J. de Bartolomeo  photo A.J. de Bartolomeo Partner
Ariana J. Tadler : Founder and Managing Partner
A.J. de Bartolomeo : Shareholder and Partner
Brian R. Morrison : Partner
Joann Militano : Senior Associate
Jason A. Joseph : Case Manager
Sheba A. Makonnen : Director of Operations and Administrative Services