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Practice Area
Class Actions & Group Litigation
Winston has developed a consistent record of success handling class action cases in state and federal courts. The practice is anchored by seasoned class action lawyers, many of whom have been recognized by Chambers USA and other ranking organizations as being top practitioners in their field. Our clients rely on us to steer them through class action matters by drawing on the firm’s significant experience in resolving complex litigation using creative and aggressive arguments, across a broad range of class, collective, coordinated, and mass actions, as well multidistrict litigation. We also have succeeded at trial in several class actions—a rare occurrence.
Practice Area
Our nationally recognized Appellate & Critical Motions (ACM) Practice delivers sophisticated legal advocacy and analysis before trial, at trial, and on appeal. From state trial courts to the U.S. Supreme Court, our ACM attorneys identify, preserve, and present the critical legal issues that can make the difference between winning and losing.
Practice Area
Brands across key sectors turn to Winston litigators to defend their reputations in advertising class actions, competitor disputes, and investigations. With litigators based in the U.S.’s busiest jurisdictions—including courts in California, Florida, Illinois, New York, and Texas—we have deep experience and prowess in handling some of the most high-profile and business-essential advertising cases in recent history. These disputes have involved false advertising; unfair competition, unfair business practices, and unjust enrichment; copyright, trade name, and service mark infringement; consumer-protection claims; and violations of the Lanham Act.
Experience 403 results
Experience
|June 25, 2025
Winston Secures Federal Circuit Affirmance of 101 Victory for Polycom
Experience
|June 4, 2025
Winston Represents Chart Industries in All-Stock Merger of Equals with Flowserve
Experience
|June 3, 2025
Insights & News 3,893 results
Webinar
|22 JULY 2025
Join us for an insightful webinar during which Dr. Nicole Lux (of Bayes Business School) and Denis Moscovici and Christopher Puyraimond (both of IEIF) will ‘deep dive’ into key data sets emerging from commercial real estate lending market activity in H1 2025 across Western Europe and the Nordics, with a particular focus on France. Winston partner Aparna Sehgal, in conversation with our presenters and panellists, will look at trends and projections emerging from the information analysed, including what to expect for the rest of 2025. We’ll also look at European debt availability and explore the most pressing financing issues of the day.
Product Liability & Mass Torts Digest
|July 16, 2025
|7 Min Read
Delaware Supreme Court Reverses Trial Court Decision on Zantac Expert Testimony
Winston has previously analyzed several key aspects of Judge Rosenberg’s decision in the Zantac (ranitidine) MDL that excluded the plaintiffs’ experts and granted summary judgment for the defendants.
Competition Corner
|July 15, 2025
|3 Min Read
Colorado recently became the second state, after Washington, to enact the Uniform Antitrust Premerger Notification Act (UAPNA) and establish a general state-level premerger notification requirement.
Other Results 37 results
Location
Since opening in 2011, Winston & Strawn’s Houston office has grown to nearly 60 lawyers and is home to many long-standing leaders of the Houston legal and business communities. Our Houston office hosts a comprehensive transactional team specializing in private equity, capital markets, and public companies, as well as extensive commercial litigation and intellectual property practices—with nearly all Houston IP attorneys possessing technical degrees. We are also home to a leading energy and infrastructure group that focuses on oil and gas projects and infrastructure litigation, and an international arbitration practice. Our robust offerings demonstrate our commitment to the continued growth of the city’s global, economic, and cultural footprint.
Law Glossary
What Is Data Breach and Data Security Law?
Within 48 U.S. states and the District of Columbia, data breach and data security laws require organizations and government agencies to provide notifications of security breaches when they involve personally identifiable information. Companies may also be required by state data breach laws to act to minimize the effects of a breach. The FTC can investigate companies that do not adhere to their stated privacy policies and do not have safeguards to protect customer data, but no broad federal law exists regarding breach notifications. However, these U.S. data security laws and government agency rules are enforced:
Location
Winston & Strawn’s Miami office opened in 2022 and represents the firm’s largest expansion in several years. Located in the heart of the city’s Financial District, the office launched with a strong team of transactional and litigation partners from prestigious law firms operating in South Florida. Our Miami office leverages the area’s status as a critical nexus point for banking and international trade with the United States, Europe, Latin America, and other parts of the world. Our attorneys have the cultural fluency and local knowledge necessary to work seamlessly with international clients, particularly those with ties to Latin America.