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Professionals 198 results
Capabilities 70 results
Practice Area
White Collar & Government Investigations
Ranked Tier 1 Nationally for “Criminal Defense: White Collar” by Best Law Firms®2025, and recognized for “Corporate Crime & Investigations: Highly Regarded – Nationwide” by Chambers USA in 2025, Winston’s White Collar & Government Investigations Practice assists individuals, companies, and organizations with government investigations and enforcement matters; related criminal and civil litigation; trials; appeals; congressional oversight; internal investigations; and compliance counseling and program development and enhancement. We are comprised of 80+ litigators, with more than a dozen former prosecutors from the SEC, Main Justice, and U.S. Attorneys’ Offices nationwide, including four former U.S. Attorneys, Regional Supervisors, and a former Assistant Director, Enforcement Division, SEC. We are known for our zealous advocacy, our unyielding commitment to our clients, and for protecting and defending clients’ interests with legal acumen that’s second to none.
Practice Area
Winston’s Intellectual Property (IP) Practice is one of the most active and highly regarded in the United States per Chambers USA, Benchmark Litigation US, and Best Law Firms®, among other ranking organizations. Our team features some of the country’s best IP lawyers, attorneys with the technical abilities to litigate and try highly complex IP disputes, and technical lawyers who provide critical advisory services.
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 11 results
Experience
|October 30, 2024
Drilling Tools International in Agreement to Acquire Titan Tools Services
Winston is representing Drilling Tools International (DTI), a global oilfield services company that designs, engineers, manufactures and provides a differentiated, rental-focused offering of tools for use in onshore and offshore drilling operations, in connection with the company’s signing of a definitive agreement to acquire Titan Tools Services (Titan), a UK-based downhole tool rental company. By combining its expertise in downhole drilling tools with Titan’s commitment to service and support, DTI will be able to offer a more comprehensive suite of solutions to the oil and gas and geothermal drilling industries worldwide. The transaction is expected to close in the first quarter of 2025, subject to customary closing conditions and regulatory approvals.
Experience
|June 28, 2024
Agreement Between 119 Institutional Investors and the Company Vivendi SE
119 institutional investors, among which Union Asset Management Holding, accused the French company Vivendi of having disseminated false or misleading information between 2000 and 2002, thereby causing them an important stock market damage.
Experience
|March 18, 2024
Drilling Tools International Corp. Closes on Acquisition of Deep Casing Tools
Winston & Strawn represented Drilling Tools International Corp. (NASDAQ: DTI) in its acquisition of UK-based Deep Casing Tools (DCT), a global leader in innovative downhole technology solutions. The details of the transaction were not disclosed.
Insights & News 501 results
Seminar/CLE
|January 22, 2026
14th ITA-IEL-ICC Joint Conference on International Energy Arbitration – Houston
Imad Khan is a proud Co-Chair of The Institute for Transnational Arbitration (ITA), Institute for Energy Law (IEL) and International Chamber of Commerce (ICC) International Court of Arbitration 14th edition of what has become the premier conference on international arbitration in the energy sector. Speakers from around the globe and across the industry will gather to focus on the key issues in the field today.
Article
|November 3, 2025
|1 Min Read
Venture Capital Law: United Kingdom
This article was originally published in Lexology. Any opinions in this article are not those of Winston & Strawn or its clients. The opinions in this article are the authors’ opinions only.
Recognitions
|October 31, 2025
|1 Min Read
Winston & Strawn Ranked in 2025 Chambers Brazil: Transactional Guide
Winston & Strawn has been recognized in the 2025 edition of Chambers Brazil: Transactional Guide. Chambers Brazil ranks and reviews the top law firms and lawyers in Brazil based on in-depth research and client feedback across key practice areas and industry sectors. The firm was ranked for its strength in the following international firm practice areas:
Other Results 23 results
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.
Location
Opened in 2003, Winston & Strawn’s San Francisco office is located in the financial district, just down the road from the Bay Area’s technology epicenter. Our team—now 25+ lawyers strong—keeps a finger on the pulse of the rapidly evolving financial services and technology sectors, and offers support across a wide spectrum of services, including antitrust/competition, commercial litigation and disputes, government investigations and compliance, intellectual property, labor and employment, mergers and acquisitions, and product liability. The San Francisco team works seamlessly with lawyers and departments across the firm’s global network to ensure the highest quality service to our clients. With a culture that represents the Bay Area’s innovative spirit, our lawyers are regularly honored with high-profile awards and frequently recognized by publications, such as Chambers USA, The American Lawyer, the Daily Journal, and The Recorder.