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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
The United States International Trade Commission (ITC) is an increasingly popular venue for patent infringement litigation. More and more companies are seeking to halt importations of infringing products into the United States by turning to the ITC for expedited relief. Section 337 investigations conducted by the ITC provide complainants with a “fast track” to remedy IP matters that typically go to trial within 10 months. Since many Section 337 cases go to trial, selecting an ITC litigation team with a command of the technology, patent law, and specialized procedural practice is extremely important. We have handled more than 100 cases before the ITC.
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.
Experience 54 results
Experience
|January 27, 2026
Winston & Strawn secured a decisive victory for PayPal in an intellectual property dispute brought by Irish non-practicing entity Internet Payment Patents LTD (IPPL). Magistrate Judge Susan van Keulen of the Northern District of California entered final judgment in PayPal’s favor, finding all asserted patent claims ineligible under 35 U.S.C. § 101 and granting PayPal’s motion to dismiss without leave to amend.
Experience
|December 16, 2025
Winston & Strawn advises on financing of World Fencing League
Winston & Strawn LLP has advised World Fencing League (WFL) on its successful financing from the Flick Family Office, supporting WFL’s mission to transform fencing from a niche Olympic discipline into a modern, fan-driven global sport.
Experience
|August 18, 2025
Winston Represented Amphenol in Definitive Agreement to Acquire Trexon
Winston represented Amphenol Corporation (NYSE: APH), one of the world’s largest designers, manufacturers, and marketers of electrical, electronic, and fiber optic connectors and systems, as well as coaxial and high-speed specialty cables, in its definitive agreement to acquire Trexon, a leading provider of high-reliability interconnect and cable assemblies primarily serving the defense market. The acquisition is valued at approximately US$1B, subject to customary post-closing adjustments. Amphenol will finance the transaction with cash on hand and expects to close in the fourth quarter of 2025.
Insights & News 2,055 results
In the Media
|April 6, 2026
|1 Min Read
Alexander Ott Joins Winston in Washington, D.C.
Winston & Strawn recently announced that Alexander Ott has joined the firm’s Washington, D.C. office as a partner in the Litigation Department and a member of the International Trade Commission (ITC) Practice. Alex focuses on complex patent disputes and represents clients in high-technology industries, including semiconductor, wireless networking, LED, and software technologies. He has led numerous ITC Section 337 investigations and has represented clients before the Federal Circuit, in inter partes review (IPR) and post-grant review proceedings at the U.S. Patent and Trademark Office (USPTO), and in federal district courts.
Recognitions
|April 3, 2026
|1 Min Read
John Drosick Named Among National LGBTQ+ Bar Association’s 2026 Best LGBTQ+ Lawyers Under 40
Winston & Strawn associate John Drosick has been recognized among the National LGBTQ+ Bar Association’s 2026 Best LGBTQ+ Lawyers Under 40. Each year, the National LGBTQ+ Bar recognizes LGBTQ+ legal professionals under the age of 40 who have distinguished themselves in their field and demonstrated a profound commitment to the LGBTQ+ equality.
Benefits Blast
|April 2, 2026
|5 Min Read
DOL Proposes Safe Harbor for Alternative Investments in 401(k) Plans
The U.S. Department of Labor (the DOL) has published its long-awaited proposed rule on selecting alternative investments in participant-directed 401(k) plans.
Other Results 46 results
Site Content
In the product liability context, a design defect claim arises when a plaintiff alleges that a product is inherently dangerous due to its design, rendering it unreasonably unsafe for its intended use. This type of claim does not focus on manufacturing errors but instead asserts that the product's fundamental design flaw poses an unreasonable risk of harm to consumers.
Law Glossary
Colloquially referred to as the “patent dance,” the BPCIA provides a framework that includes certain steps and a schedule during which the applicant and reference product sponsor exchange confidential information disclosed in the aBLA. During the patent dance, the applicant and sponsor identify the patents that could be litigated in the future during two potential phases of litigation. In the first phase, the sponsor can allege infringement of a subset of the patents identified during the patent dance. The second phase begins after the sponsor receives the Notice of Commercial Marketing from the applicant. During this second phase, the sponsor can assert any remaining patents that were not asserted in the first phase.
Law Glossary
What Is the Patent Trial and Appeal Board?
The Patent Trial and Appeal Board (PTAB) is a tribunal within U.S. Patent and Trademark Office. The PTAB oversees trial proceedings, namely: inter partes review (IPR), post-grant review (PGR), covered business method (CBM) review, and derivation proceedings. The Board also hears appeals from adverse patentability decisions by patent examiners in original applications, reissues, and reexaminations. And, while phasing out since the passage of the America Invents Act (AIA) in 2011, the PTAB is also responsible for deciding interferences. The PTAB was previously referred to as the Board of Patent Appeals and Interferences and was renamed by the AIA.