Complex Commercial Litigation

Weil's Complex Commercial Litigation practice marshals litigators around the U.S. and Europe who collectively possess comprehensive experience in successful high-stakes litigation on behalf of sophisticated clients around the world. Our priority is to assist our clients in obtaining the best results in litigation, managing risk, and capitalizing on strategic opportunities.

Notable Representations, Key Contacts

Weil's Complex Commercial Litigation practice comprises more than 130 attorneys in Boston, Dallas, Frankfurt, Houston, London, Miami, Munich, New York, Paris, Silicon Valley, and Washington, DC. We have a reputation for defending, prosecuting, and coordinating some of the largest, most complex cases ever filed in courts, before arbitration panels, or in private mediations.

We have a long record of successfully resolving these proceedings on behalf of clients across industries, including retail and consumer products, energy, chemicals, media and entertainment, healthcare and life sciences, heavy manufacturing, insurance, technology, and financial services. Likewise, our experience covers a broad range of substantive areas of law, including fraud, bankruptcy, media and entertainment, trade secrets and restrictive covenants, unfair and deceptive trade practices, RICO, insurance and reinsurance, breach of contract, consumer protection, product liability, and antitrust, among many others.

The practice's comprehensive offerings are supported by a number of foundational capabilities:

Trial Ready Approach

In today's risk-averse legal environment, Weil differentiates itself from other firms by virtue of our trial resume and breadth of practice. Drawing on the robust experience of leading trial lawyers across all of our practices and offices, we possess the tools to take any matter to trial – and win. We always seek to find the most cost-effective, efficient and judicious solution from a business standpoint for our clients – but our clients and our adversaries always know we are prepared to advocate in the courtroom.

Class Action and Multi-District Litigation Experience

Weil has an excellent track record in defending complex, multi-plaintiff actions, including proceedings before the Judicial Panel on Multi-District Litigation (MDL) and under various state multi-district litigation statutes, as well as class and collective actions in state and federal courts around the United States. From multi-hundred-plaintiff MDLs regarding healthcare reimbursement rates and product defects to significant class actions asserting claims for treble damages under the antitrust laws and RICO statute, Weil's commercial litigators have extensive experience litigating high-value claims, cases of first impression and other significant issues in these contexts for clients across the industry spectrum. In each of 2018, 2020, and 2023, the New York Law Journal recognized the Firm as Class Action Litigation Department of the Year.  Read more

Selected Representations

C&S Wholesale Grocers


Confidential E-Commerce Company

Credit Suisse

Discovery Communications


Farmers Insurance

Global Technology Company

NBA All-Star Zion Williamson and Creative Artists Agency

Panasonic Corporation

Port Authority of New York and New Jersey

Procter & Gamble

Sears Holdings

Showtime Networks Inc.

Walgreens Boots Alliance

Key Contacts

David J. Lender

David J. Lender


New York

Gregory Silbert

Greg Silbert


New York

Drew Tulumello

Drew Tulumello


Washington, D.C.

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American Lawyer and its sister publications have regularly recognized Weil as a finalist for Litigation Department of the Year, including: 2024 Florida Litigation Department of the Year (Daily Business Review), 2023 D.C. Litigation Department of the Year (National Law Journal), 2023 New York Class Action Litigation Department of the Year (New York Law Journal), and 2021 New York Litigation Department of the Year (New York Law Journal). American Lawyer has also recognized Weil with Honorable Mentions in 2018, 2020, and 2022 in its national Litigation Department of the Year competition.

Clients note, "The firm has excellent litigators who are ready to strategize around complex, evolving contexts in and outside the courtroom,” and “extensive technical prowess and ability to synthesize complex issues with a commercial lens.”

Chambers USA 2024

Weil is ranked as one of the top 10 firms in New York for General Commercial Litigation: The Elite.

Chambers USA 2024

Weil is recognized as one of eight top-ranked Tier 1 firms nationwide for General Commercial Disputes.

Legal 500 US 2023

Weil is recognized as a top-ranked Tier 1 firm for General Commercial Litigation.

Benchmark Litigation 2024

Weil is “highly skilled and attentive,” “professional, organized, and prepared. Their work is top-notch.”

Legal 500 US 2021

Often at the heart of some of the most complex and challenging litigation for an impressive roster of clients, Weil is adept at all aspects of commercial disputes and is notable for its deep and experienced bench of trial lawyers.”

Legal 500 US

Sources call our Complex Commercial Litigation practice the “go-to for bet-the-company cases” and note that “their service is exemplary,” “there is nothing they cannot do” and “they partner with the client and are fully engaged in both strategy planning and providing practical solutions. They have some of the most creative ideas and approaches to each individual litigation matter.”

Chambers USA 2016-2022

Weil’s “fearless, smart, savvy, and experienced” Litigation Department has “a very deep bench in which all lawyers are meticulous, smart, careful, practical, energetic and tenacious,” and a team that “always gets the points of a dispute quickly and precisely.”

Legal 500 US 2015 - 2022

Awards and Recognition, Speaking Engagements, Latest Thinking, Firm News & Announcements, Guides and Resources, Recent Announcements

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