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Professionals 229 results
Capabilities 30 results
Practice Area
Our Patent Litigation Practice is one of the country’s most active and highly regarded. Our seasoned patent litigators bring extensive courtroom experience to every matter we handle. According to Lex Machina, we are among the top three national patent defense firms in the country for number of appearances and cases filed, and we also were the top national defense firm for number of patent trials in the last five years (2018–2022).
Practice Area
Environmental Litigation & Enforcement
With today’s rapidly evolving rules of engagement, paired with the often contentious nature of environmental disputes, clients rely on Winston for our practical experience and substantive knowledge of the broad-ranging issues involved in environmental litigation, enforcement, and investigations.
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.
Experience 423 results
Experience
|September 23, 2025
Denali Capital Acquisition Corp Closes Business Combination with Semnur Pharmaceuticals
Winston & Strawn LLP represented Denali Capital Acquisition Corp. (OTCQB: DNQAF), a special purpose acquisition company, in the closing of its previously announced business combination with Semnur Pharmaceuticals, Inc., a clinical late-stage specialty pharmaceutical company focused on the development and commercialization of novel non-opioid pain therapies and a majority-owned subsidiary of Scilex Holding Company (Nasdaq: SCLX).
Experience
|September 11, 2025
$1.5 Billion Raymond James Financial, Inc. Public Offering of Senior Notes
We served as underwriters' counsel to BofA Securities, Citigroup, J.P. Morgan and Raymond James, as joint book-running managers, in connection with the registered public offering of $1.5 billion of Senior Notes by Raymond James Financial, Inc. comprised of $650 million of its 4.900% Senior Notes due 2035, and $850 million of its 5.650% Senior Notes due 2055.
Experience
|September 8, 2025
Winston represents a class of professional swimmers alleging World Aquatics (WA) violated antitrust laws by blocking their participation in the competing International Swimming League. After WA won summary judgment, Winston successfully appealed, arguing the court applied improper antitrust standards and wrongly denied certification of a damages class. In September 2024, the Ninth Circuit reversed both rulings, reviving all claims and issuing a landmark ruling on the possible application of the per se rule or quick look review to sports-associations rules. Am Law awarded Winston “Litigator of the Week” Runner-Up recognition for the win. In November 2024, the Ninth Circuit denied rehearing. In April 2025, the district court certified a damages class.
Insights & News 6,583 results
Sponsorship
|November 20, 2025
Winston & Strawn Sponsors 2025 Smart Business Dealmakers South Florida M&A Conference
Winston & Strawn is proud to sponsor the upcoming Smart Business Dealmakers South Florida M&A Conference. The conference brings together hundreds of local dealmakers, including middle-market CEOs, top investors and lenders, and leading M&A advisers.
Seminar/CLE
|November 13, 2025
AI in Action: Legal Strategies for Healthcare Innovation
We are bringing together stakeholders across the healthcare ecosystem—from front-line providers to financial backers—for a panel discussion on AI in healthcare.
Sponsorship
|November 12, 2025
Winston & Strawn Sponsors 2025 Smart Business Dealmakers Houston M&A Conference
Winston & Strawn is proud to sponsor the upcoming Smart Business Dealmakers Houston M&A Conference. The conference will discuss topics ranging from raising capital to alternative asset investing, covering the breadth of the M&A landscape.
Other Results 49 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.
Location
Serving one of the world’s largest economies for over 20 years, Winston & Strawn’s Los Angeles office is home to more than 100 lawyers and business professionals. Under the guidance of Office Managing Partner Angela Machala, our L.A. office thrives as a dynamic and tightly knit community with an inclusive culture in which its members from all backgrounds, experiences, and perspectives collaborate closely to support each other’s success and achieve their clients’ goals. Our L.A. lawyers—who are equally split between litigation and transactional work—advise 80+ Fortune 500 companies, which is a testament to the collaborative environment we’ve created to provide exceptional legal services.
Location
Winston & Strawn’s São Paulo office reflects the firm’s long-term investment in Brazil and the significant commitment of Winston’s Latin America practice group members to the country over many decades. Our fully bilingual São Paulo-based attorneys represent clients on international financing, cross-border mergers and acquisitions, corporate governance, and disputes. They also act as a relationship touch point for global clients looking to expand into Brazil, ensuring an integrated and seamless service. Our São Paulo attorneys have in-depth knowledge of the region’s legal, cultural, political, regulatory, and commercial frameworks, which have earned them recognition from Chambers Global, Chambers Brazil, Chambers Latin America, Leaders League, The Legal 500, Latinvex, IFLR 1000, and LatinFinance, among many others.