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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
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 558 results
Experience
|March 4, 2026
End of the Line: Winston Wins Unanimous Supreme Court Victory Against NJ Transit
In a unanimous decision authored by Justice Sotomayor, the U.S. Supreme Court held that NJ Transit is not an arm of the State of New Jersey and therefore is not entitled to sovereign immunity. The ruling means that plaintiffs injured by NJ Transit outside of New Jersey—such as in Pennsylvania and New York—may pursue claims in the courts of the states where their injuries occurred. The court adopted Winston’s position that state-created corporations that are formally liable for their own judgments are not arms of the state, reversing the Pennsylvania Supreme Court’s dismissal of Cedric Galette’s negligence suit while affirming the New York Court of Appeals’ decision allowing Jeffrey Colt’s case to proceed.
Experience
|February 12, 2026
Braiin Ltd. Loan from Streeterville
Winston represented Braiin in a $6.5 million loan from Streeterville.
Experience
|February 4, 2026
A Winston & Strawn deal team led by Partners Justin Levy in New York and Paul Amiss in London advised Aeron Defense, a newly formed defense platform established by Ventus Industrial Partners in partnership with GenNx360 Capital Partners and Admiralty Partners, on its acquisition of defense contracting specialists General Tool Company and Magna Machine Company.
Insights & News 8,675 results
Seminar/CLE
|March 25, 2026
Sanctions, Arbitration, and Cross-Border Enforcement: Complex Intersections in Practice
We are pleased to host an exclusive panel session during Paris Arbitration Week, exploring the complex intersections of sanctions regimes, international arbitration, and cross-border enforcement. This program combines real-world case insights with comparative perspectives to help practitioners navigate today’s challenging global legal landscape.
Sponsorship
|March 23, 2026
Winston & Strawn Sponsors Healthcare Business International (HBI) 2026
We are proud to be an Elite Sponsor of the 2026 Healthcare Business International Conference in Paris. This must-attend event brings together leading decision-makers from the global for-profit healthcare sector to explore new business opportunities, drive growth, and shape the future of healthcare.
Sponsorship
|March 22, 2026
Winston & Strawn Sponsors 38th Annual Roth Conference
Winston & Strawn is proud to sponsor the 38th Annual Roth Conference. This year, the program will feature one-on-one and small group meetings, analyst-selected fireside chats, industry keynotes, and panel discussions.
Other Results 136 results
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.
Site Content
What Is Trademark Infringement?
Trademark infringement is defined as the unauthorized use of a trademark or service mark. This use can be in connection with goods or services and may lead to confusion, deception, or a misunderstanding about the actual company a product or service came from. Trademark owners can take legal action if they believe their marks are being infringed. If infringement of a trademark is proven, a court order can prevent a defendant from using the mark, and the owner may be awarded monetary relief.
Site Content
The United States Patent and Trademark Office refers to a trade secret as a type of intellectual property. This definition of trade secret is in reference to the business ownership of a formula, pattern, compilation, program, device, method, technique, or process that provides a competitive edge. As a member of the World Trade Organization, the U.S. government has a responsibility to protect trade secrets. The passage of the Defend Trade Secrets Act of 2016 (DTSA) also increased trade secret protection. Under the DTSA, an individual or organization may be found liable in a civil case for the misappropriation of trade secrets.


