Cases

We’re fighting back against unauthorized data collection and privacy invasions. See how we’re holding big tech accountable—from Wesch v. Yodlee to our other landmark lawsuits.

Investigations

Wondering if your rights were violated? Our team digs deep to uncover misuse and demand accountability. Get a free case evaluation and take back control of your data.

News

Stay on top of the latest privacy laws, major data breaches, and tech updates. Learn what’s changing—and how to protect yourself in a fast-evolving digital world.

Commercial Litigation Lawyers in NYC

Lowey Dannenberg:
bringing experience and discipline to Commercial Litigation

Lowey represents Fortune 100 companies, small businesses, and individuals.

Lowey Dannenberg’s attorneys are routinely recognized by the courts and clients as expert practitioners in the field of complex litigation. Lowey’s expertise has been highlighted in In-House Law Departments at the Top 500 Companies,” where the firm was identified as a Go-to Law Firm” for Fortune 100 companies.

Our People

Christian Levis

Christian Levis

Data Breach, Privacy

Christian Levis is a partner at Lowey Dannenberg, P.C., and head of the firm’s data breach and privacy practice group.

Amanda Fiorilla

Amanda Fiorilla

Data Breach, Privacy

Amanda Fiorilla is a Senior Associate and Vice Chair of Lowey Dannenberg’s Data Breach & Privacy Practice.

Cases

Meek-Horton v. Trover

Lowey Dannenberg secured judgments dismissing the class action lawsuits, which sought to apply New York State’s anti-subrogation law to void health insurance plans’ subrogation and reimbursement rights in New York. Meek-Horton v. Trover, et al., 910 F. Supp. 2d 690 (S.D.N.Y. 2013); Potts v. Rawlings Co. LLC, 897 F. Supp. 2d 185 (S.D.N.Y. 2012).

New Jersey lawMinerley v. Aetna

Lowey Dannenberg served as class counsel in a generic pay-for-delay case against GlaxoSmithKline and Valeant (f/k/a Biovail), alleging they formed an anti-competitive agreement to prevent the market entry of a cheaper, generic version of the blockbuster antidepressant drug, Wellbutrin XL.

Bassel v. Aetna Health Ins

Lowey Dannenberg defended Aetna against a medical services provider for an alleged failure to pay for services provided. Bassel v. Aetna Health Ins. Co. of New York, No. 17-cv-5179, 2018 WL 4288635 (E.D.N.Y. Sept. 7, 2018) (denying plaintiff’s motion to remand and dismissing the complaint due to ERISA preemption; Bassel v. Aetna Health & Life Ins. Co., No. 8280/19, 2020 WL 1223975 (N.Y. Civ. Ct. Mar. 12, 2020) (dismissing the complaint on grounds that communications between plaintiff and Aetna did not give rise to an independent legal duty).

LI Neuroscience Specialists v. Aetna

Lowey Dannenberg successfully defended Aetna against numerous actions brought by out-of-network medical providers. LI Neuroscience Specialists v. Aetna, Inc., No. 17-cv-7513 (E.D.N.Y); Neuroscience Specialists v. Aetna, Inc., 17-cv-7514, (E.D.N.Y); Long Island Neurosurgical Associates, P.C. v. Aetna Life Ins. Co., Nos. 18-cv-2144, 19-cv-01003 (E.D.N.Y.).

Federated Investment Management Company, et al., v. Republic of Argentina

Lowey obtained emergency injunctive relief on behalf of Federated Investors, one of the largest investment firms in the country with over $363 billion in assets under management, preventing the Government of Argentina from canceling outstanding bonds with a face value of more than $500 million, which had been erroneously tendered by those bondholders. Federated Investment Management Company, et al., v. Republic of Argentina, et al., 10 Civ. 4324 (S.D.N.Y. 2010) (Griesa, J.).

Elliot Plaza Pharmacy v. Aetna U.S. Healthcare

The firm won dismissal of a class action lawsuit alleging that our client, Aetna, improperly reimbursed pharmacy provider claims. Elliot Plaza Pharmacy v. Aetna U.S. Healthcare, 2009 WL 702837 (N.D. Okla. March 16, 2009).

Main Drug, Inc. v. Aetna U.S. Healthcare

Lowey Dannenberg won dismissal of claims for misrepresentation, breach of contract, unjust enrichment and conspiracy. The action alleged that Aetna failed to reimburse pharmacies “according to an agreed-upon formula for brand name prescriptions dispensed to Defendants’ insureds.”

Roche v. Aetna, Inc.

Lowey Dannenberg is defending Aetna in a class action related to state anti-subrogation laws. Minerley v. Aetna Inc., et al., 13-cv-1337 (D.N.J.). Lowey Dannenberg has defended and won dismissal of several similar class action lawsuits against health insurance clients: Wurtz v. Rawlings Co., LLC, 2016 WL 7174674 (E.D.N.Y. Nov. 17, 2016); Meek-Horton v. Trover, et al., 910 F.Supp. 2d 690 (S.D.N.Y. 2013); Potts v. Rawlings Co. LLC, 897 F.Supp. 2d 185 (S.D.N.Y. 2012).

Real Results

Lowey’s data privacy team is trusted by consumers and institutional clients alike to take on cutting-edge privacy challenges — from unauthorized data collection to credential stuffing and vendor breaches.

Yen-LIBOR

In February 2013, Lowey Dannenberg filed a proposed class action against global financial institutions responsible for setting the Euro Interbank Offered Rate (Euribor), a global reference rate used to benchmark and price settle more than $200 trillion of financial products, including Euribor futures contracts traded on the NYSE LIFFE exchange. Lowey Dannenberg secured settlement agreements from three of the defendants— Barclays, Deutsche Bank, and HSBC —totaling $309 million. The Court has granted final approval to all three settlements.
The case is currently pending before Judge P. Kevin Castel and the litigation is ongoing. Defendants settled with global regulators, paid billions in fines, and were granted ACPERA conditional leniency from the DOJ for alleged anti-competitive conduct in the Euribor market.

Sullivan v. Barclays PLC et al., Case No. 13-cv-2811 (S.D.N.Y.)

Euribor

In February 2013, Lowey Dannenberg filed a proposed class action against global financial institutions responsible for setting the Euro Interbank Offered Rate (Euribor), a global reference rate used to benchmark and price settle more than $200 trillion of financial products, including Euribor futures contracts traded on the NYSE LIFFE exchange. Lowey Dannenberg secured settlement agreements from three of the defendants— Barclays, Deutsche Bank, and HSBC —totaling $309 million. The Court has granted final approval to all three settlements.
The case is currently pending before Judge P. Kevin Castel and the litigation is ongoing. Defendants settled with global regulators, paid billions in fines, and were granted ACPERA conditional leniency from the DOJ for alleged anti-competitive conduct in the Euribor market.

Sullivan v. Barclays PLC et al., Case No. 13-cv-2811 (S.D.N.Y.)

Swiss Franc LIBOR

In February 2015, Lowey Dannenberg filed a proposed class action against global financial institutions responsible for setting the London Interbank Offered Rate for the Swiss Franc (Swiss Franc LIBOR). Defendants settled with global regulators, paid billions in fines and were granted leniency by the European Commission for alleged anti-competitive conduct in the Swiss Franc LIBOR and Swiss Franc LIBOR derivatives market. Defendant JP Morgan agreed to a $22 million settlement and Judge Sidney Stein preliminarily approved this settlement on August 16, 2017. Judge Stein issued a decision on defendants’ motions to dismiss on September 25, 2017, finding personal jurisdiction over all of the bank defendants and granting leave to amend the complaint. Sonterra Capital Master Fund Ltd. v. Credit Suisse Group AG et al., Case No. 15-cv-0871 (S.D.N.Y.) The case is currently pending before Judge P. Kevin Castel and the litigation is ongoing. Defendants settled with global regulators, paid billions in fines, and were granted ACPERA conditional leniency from the DOJ for alleged anti-competitive conduct in the Euribor market.

Sullivan v. Barclays PLC et al., Case No. 13-cv-2811 (S.D.N.Y.)

SIBOR/SOR

In February 2013, Lowey Dannenberg filed a proposed class action against global financial institutions responsible for setting the Euro Interbank Offered Rate (Euribor), a global reference rate used to benchmark and price settle more than $200 trillion of financial products, including Euribor futures contracts traded on the NYSE LIFFE exchange. Lowey Dannenberg secured settlement agreements from three of the defendants— Barclays, Deutsche Bank, and HSBC —totaling $309 million. The Court has granted final approval to all three settlements.
The case is currently pending before Judge P. Kevin Castel and the litigation is ongoing. Defendants settled with global regulators, paid billions in fines, and were granted ACPERA conditional leniency from the DOJ for alleged anti-competitive conduct in the Euribor market.

Sullivan v. Barclays PLC et al., Case No. 13-cv-2811 (S.D.N.Y.)

Sterling LIBOR

Lowey Dannenberg filed a proposed class action in July 2015 alleging that the 20 global financial institutions responsible for setting the Singapore Interbank Offered Rate (“SIBOR”) and the Singapore Swap Offer Rate (“SOR”) manipulated these benchmark rates to benefit their own derivatives positions at the expense of U.S. investors. The Monetary Authority of Singapore investigated, finding manipulation by these financial institutions in SIBOR and SOR, imposing fines and other remedial measures. In August 2017, Judge Alvin K. Hellerstein sustained plaintiffs’ Sherman Act claims against defendants Bank of America, Citibank, JPMorgan Chase Bank. FrontPoint Asian Event Driven Fund, L.P. v. Citibank, N.A., et al., 16-cv-5263 (S.D.N.Y.)
Sullivan v. Barclays PLC et al., Case No. 13-cv-2811 (S.D.N.Y.)

Australian Bank Bill Swap Reference Rate

Lowey Dannenberg filed a proposed class action in August 2016 alleging that global financial institutions responsible for setting the Bank Bill Swap Reference Rate (“BBSW”), the primary interest rate benchmark used to price and settle Australian dollar-denominated derivatives, colluded to manipulate the benchmark rate to profit in their related derivatives positions at the expense of investors. Australia and New Zealand Banking Group, Limited and National Australia Bank have settled with the Australian Securities and Investments Commission, agreeing to pay 100 million Australian dollars in fines and admitting to wrongdoing. This case is currently pending before Judge Lewis A. Kaplan. Dennis, et al. v. JPMorgan Chase & Co., et al., Case No. 16-cv-06496-LAK (S.D.N.Y.)The case is currently pending before Judge P. Kevin Castel and the litigation is ongoing. Defendants settled with global regulators, paid billions in fines, and were granted ACPERA conditional leniency from the DOJ for alleged anti-competitive conduct in the Euribor market.

Sullivan v. Barclays PLC et al., Case No. 13-cv-2811 (S.D.N.Y.)

FX Manipulation

Lowey Dannenberg filed a proposed class action in August 2016 alleging that global financial institutions responsible for setting the Bank Bill Swap Reference Rate (“BBSW”), the primary interest rate benchmark used to price and settle Australian dollar-denominated derivatives, colluded to manipulate the benchmark rate to profit in their related derivatives positions at the expense of investors. Australia and New Zealand Banking Group, Limited and National Australia Bank have settled with the Australian Securities and Investments Commission, agreeing to pay 100 million Australian dollars in fines and admitting to wrongdoing. This case is currently pending before Judge Lewis A. Kaplan. Dennis, et al. v. JPMorgan Chase & Co., et al., Case No. 16-cv-06496-LAK (S.D.N.Y.)

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“The successful prosecution of the complex claims in this case required the participation of highly skilled and specialized attorneys.”

~ Hon. James S. Ware, United States District Judge, N.D. California

Landmark Outcomes

Lowey Dannenberg served as lead counsel in a class action against Juniper Networks, Inc., alleging the corporation and executives fraudulently concealed the backdating of millions of stock options. Lowey secured one of the largest settlements in an options backdating case: a $169.5 million settlement with Juniper Networks and certain officers and directors, and a $500,000 settlement with Ernst & Young LLP, the company’s auditors.

In re Juniper Networks, Inc. Sec. Litig., No. 06-04327 JW (N.D. Cal).

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Investigations

If your privacy rights have been impacted, we’re here to help. Use the form below for a free case evaluation.

At Lowey Dannenberg, we take on data privacy litigation with a single focus: results for people, not big tech. Our privacy team goes beyond the surface—combining legal expertise with technological know-how—to uncover how companies misuse your data and push for accountability through litigation, investigations, and consumer advocacy.

News

The world is waking up to the cost of data privacy violations—and we’re here to break it down.

Our articles cover the latest developments in U.S. and global privacy law, offer unique perspectives on emerging technologies, and explain what it all means for you. Whether it's a new law, a major data breach, or a subtle shift in how companies track users, we’ll help you understand what’s happening—and what you can do to protect yourself.

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