Class Actions

Class Action & Mass Litigation Attorneys

Dynamis LLP represents plaintiffs and defendants in complex class actions, mass arbitrations, and aggregate litigation nationwide. Our attorneys have achieved significant results in securities fraud class actions, consumer protection cases, crypto-related mass litigation, business litigation, and data breach claims across federal and state courts.

We represent individuals and companies on both sides of the “V”. Whether you're seeking to pursue claims on behalf of a class, defending your corporation against class certification, or navigating the strategic complexities of mass arbitration, our trial-tested attorneys bring sophisticated advocacy and deep understanding of Rule 23 procedures, class certification standards, and aggregate litigation dynamics.

Our Class Action Experience Includes:

  • We've served as lead counsel in nationwide securities fraud cases, securing multi-million dollar settlements for investors harmed by accounting fraud, misleading disclosures, and market manipulation. Our team has recovered over $14 million for class members in recent securities cases and currently represents plaintiffs in multiple pending securities fraud actions.

  • From data breaches and privacy violations to false advertising and deceptive practices, we handle consumer class actions under federal and state consumer protection statutes. We've successfully defended corporations against putative class claims and secured dismissals with prejudice in major consumer cases.

  • Dynamis is at the forefront of crypto-related class action litigation. We're currently prosecuting a landmark RICO case against Binance (the world's largest crypto exchange) on behalf of "pig butchering" fraud victims, filed a class action against Eqonex for securities fraud, and represent consumers in data breach litigation involving crypto hardware wallets.

  • We represent both companies defending against mass arbitration demands and individuals pursuing claims through coordinated arbitration proceedings. Our attorneys understand the strategic and procedural nuances of mass arbitration, including class waiver enforcement and arbitration clause challenges.

  • When corporations face class certification motions, we develop aggressive defense strategies including challenging class certification requirements, defeating commonality and typicality, and when appropriate, securing complete dismissal of claims. We've successfully defended national corporations in consumer and securities class actions in multiple federal districts.

    With offices in Boston, New York, and Miami, Dynamis attorneys have handled class actions and mass litigation in jurisdictions throughout the United States, including the Southern District of New York, Northern District of California, Northern District of Illinois, District of Massachusetts, and Southern District of Florida.

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Class Action Subject Areas

Examples of Class Actions We Handle

Securities Fraud Class Actions

Accounting fraud, misleading disclosures, market manipulation, and securities violations under federal and state law.

Recovered: $14M+ for investors

Consumer Protection

Data breaches, privacy violations, false advertising, unfair practices, and consumer fraud under state and federal statutes.

10M+ consumers defended

Cryptocurrency Cases

Crypto exchange fraud, ICO securities violations, pig butchering scams, wallet security breaches, and DeFi protocol failures.

Binance RICO case (pending)

Mass Arbitration

Coordinated arbitration proceedings, class waiver challenges, and strategic mass arbitration campaigns against corporations.

118 Coinbase claimants

Experience and Results

  • Participated on team representing Trustee in litigation against domestic and international defendants to recover billions of dollars on behalf of investors defrauded by Madoff.

    In 2010, Dynamis attorney Constantine Economides joined the litigation team representing Trustee Irving Picard in the efforts to recoup and distribute funds to defrauded investors. Constantine participated in multiple cases involving claims of fraud, fraudulent transfers, and avoidable transfers.

  • Represented investors in a putative class action to recover funds due to malfeasance by Theranos, Elizabeth Holmes, and Sunny Balwani.

    Dynamis attorney Constantine Economides was part of the plaintiffs’ team pursuing consumer and securities claims against the defendants, who had made numerous misrepresentations to investors, business partners, consumers, and the government. 

  • Represented large corporate defendant in defending consumer claims brought on behalf of a putative class.

    Based on the motion to dismiss, the Southern District of New York dismissed all claims against the client.

  • Currently representing large group of individuals in landmark RICO suit against the crypto exchange Binance that is currently pending in the District of Massachusetts.

    Binance has hired three major law firms, with more than 10 attorneys filing notices of appearances, to take on Dynamis.

  • Represented lead plaintiff and class in a nationwide securities fraud class action in the Northern District of Illinois against a publicly traded corporation.

    As co-lead counsel, a Dynamis attorney secured a $10,500,000 settlement on behalf of the Class for claims arising from the defendant’s restatement of financials.

  • Represented lead plaintiff and class in a nationwide securities fraud class action in the Southern District of Florida against a publicly-traded corporation.

    As co-lead counsel, a Dynamis attorney secured a $3,500,000 settlement on behalf of the Class for claims arising from the defendant’s alleged misrepresentations about the effects on the stock price caused by other pending litigations.

  • Represented national corporation in defending putative class claims in the Southern District of New York.

    A Dynamis attorney secured a dismissal with prejudice of all claims through two rounds of motions to dismiss.

  • Represented national corporation in parallel federal action to enjoin claimant in arbitration from seeking to invalidate class waiver in terms.

    The case remains pending in the Western District of Texas.

  • Represented national corporation facing putative class claims under consumer protection statutes.

    The case is on appeal to determine whether the dispute must be arbitrated, with the class waiver enforced.  

  • Representing putative class of consumers who were victimized by data breach relating to crypto hardware wallets.

    The case is in jurisdictional discovery in the Northern District of California.

  • Secured highly-favorable resolution in the Western District of Pennsylvania defending an individual and a company in a class-action related to a 2017 Initial Coin Offering.

    After default judgment had been entered, Dynamis attorney Eric Rosen was retained and he negotiated a highly favorable damages resolution at a small-fraction of the initially demanded sum of money.

  • Representing investors in a class action accusing the Chinese social media company QTT of securities fraud.

    The motions to dismiss remain pending in the Southern District of New York.

  • Eric Rosen represented an individual crypto-company sued as part of an ICO token launch in the Western District of Pennsylvania.

    Case was resolved on a highly favorable basis for the client.

  • Filed class action complaint alleging securities fraud against Eqonex Limited, a now defunct crypto company.

    The Case remains pending in the Southern District of New York.

Frequently Asked Questions About Class Actions

  • A class action is a lawsuit where one or more plaintiffs (the "class representatives") sue on behalf of a larger group of people (the "class") who have similar claims against the same defendant. Class actions are governed by Federal Rule of Civil Procedure 23 in federal court and similar state court rules. They're used when many people suffer similar harm, making individual lawsuits impractical or inefficient.

  • If a court certifies a class action and you fall within the class definition, you'll typically receive a notice explaining the lawsuit, your rights, and how to participate or opt out. Class notices are sent by mail, email, or published in newspapers depending on the case. You can also search court dockets or class action settlement websites to see if cases apply to you.

  • Under Rule 23, a class must satisfy four requirements: (1) numerosity (too many class members for individual lawsuits to be practical), (2) commonality (common questions of law or fact), (3) typicality (representative's claims are typical of the class), and (4) adequacy (representatives and counsel will fairly protect class interests). The class must also fit within one of three types defined in Rule 23(b), most commonly (b)(3) requiring that common issues predominate.

  • Class actions typically take 2-5 years from filing to resolution, though some complex cases can take longer. The process includes motion to dismiss, class certification briefing and hearings, discovery, summary judgment motions, and potentially trial. Many class actions settle before trial, often during mediation after class certification. Securities fraud class actions under the PSLRA (Private Securities Litigation Reform Act) have specific procedural requirements that can extend timelines.

  • Arbitration clauses with class waivers can prevent class actions if properly drafted and enforceable. However, recent trends show increased use of "mass arbitration" where thousands of consumers file individual arbitration demands simultaneously, creating similar burdens to class actions. Whether arbitration clauses are enforceable depends on state law, federal arbitration act interpretation, and specific contract language. We help both enforce arbitration clauses and challenge them when appropriate.

Trial ready and geared up for battle, Dynamis provides zealous, aggressive, and sophisticated advocacy when our clients need it the most.

Considering a Class Action?

Whether you're seeking to pursue claims on behalf of a class or defending your corporation against class certification, our experienced trial attorneys can help.

Contact our team
Commercial litigation

Considering a Class Action?

Whether you're seeking to pursue claims on behalf of a class or defending your corporation against class certification, our experienced trial attorneys can help.

✓ Securities Fraud
✓ Consumer Protection
✓ Cryptocurrency
✓ Mass Arbitration
✓ Nationwide Practice

Trial ready and geared up for battle, Dynamis provides zealous, aggressive, and sophisticated advocacy when our clients need it the most.

Considering a Class Action?

Whether you're seeking to pursue claims on behalf of a class or defending your corporation against class certification, our experienced trial attorneys can help.

✓ Securities Fraud
✓ Consumer Protection
✓ Cryptocurrency
✓ Mass Arbitration
✓ Nationwide Practice