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Capabilities 49 results

Practice Area

Tax Controversy & Criminal Tax

Our Tax Controversy attorneys advise and represent clients in every aspect of federal and state tax investigations, as well as the criminal tax enforcement process. This includes the Internal Revenue Service’s (IRS) multi-jurisdictional examinations and administrative appeals, U.S. Competent Authority representations, post appeals mediation, and trial court and appellate litigation in every federal court hearing a tax matter....Read more

Practice Area

Appellate & Critical Motions

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....Read more

Practice Area

Patent Litigation

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)....Read more

Experience 19 results

Experience

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September 8, 2025

Winston Wins Ninth Circuit Reversal and Class Certification in Swimmers’ Antitrust Case, Securing a Global-Impact Settlement with World Aquatics

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....Read more

Experience

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July 30, 2025

Following an Astounding Summary Judgment Win, Winston Secures Three Favorable Class Settlements in US$52+B Broiler Chicken Litigation

Represent Norman W. Fries, Inc. d/b/a Claxton Poultry Farms in a series of 15+ antitrust class actions consolidated in the Northern District of Illinois and brought by plaintiffs who allege that Claxton and the nation’s other largest poultry producers conspired to fix the price of broiler chickens in a scheme from 2008 to 2016 that raised the price for broiler chickens by artificially reducing supply....Read more

Experience

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June 25, 2025

Winston Secures Federal Circuit Affirmance of 101 Victory for Polycom

Winston secured an appellate victory for Polycom (now part of HP) when the Federal Circuit affirmed a judgment on the pleadings of patent-ineligibility in a lawsuit brought by directPacket Research, Inc.  Working closely with HP, Winston argued that all claims of the asserted patent were directed to the abstract idea of translation via an intermediate protocol, with no inventive concept.  The Northern District of California agreed, and the Federal Circuit unanimously affirmed, adopting Winston’s arguments.  Eimeric Reig argued the appeal, working with HP and the Winston team, including Kathi Vidal, Kelly Hunsaker, Sam Lerner, Matt McCullough, and David Dalke....Read more
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Insights & News 1,094 results

Client Alert

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January 13, 2026

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7 Min Read

Key California Labor and Employment Updates for 2026

New California employment statutes include significant changes that will reshape employment agreements, pay equity compliance, notice practices, data governance, and leave administration. Below we summarize the statutes most likely to affect multi-state and California employers beginning January 1, 2026, highlight near-term implementation steps, and flag forward-looking changes coming in 2027 and beyond.

Client Alert

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December 15, 2025

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3 Min Read

Sovereign Wealth Fund Sues PE Firm over Continuation Vehicle Process

On November 26, 2025, the sovereign wealth fund, Abu Dhabi Investment Council (ADIC), filed a lawsuit in the Chancery Court of Delaware against Energy & Minerals Group LP and several affiliate private investment funds (collectively EMG). The complaint seeks a preliminary injunction to stop the sale of an EMG portfolio company, Ascent Resources LLC, to a continuation vehicle that is also managed by EMG in a so-called “GP-led secondary” transaction. ADIC alleges that by selling to a continuation fund, EMG is engaging in self-dealing in breach of its fiduciary duties as manager of the selling private investment fund, in which ADIC is also a limited partner.

Pro Bono In Action

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November 24, 2025

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2 Min Read

Winston Safeguards the Medical Privacy Rights of Transgender Teens in Texas

A multi-office Winston team successfully opposed the Texas Attorney General’s unprecedented attempt to use nonparty civil discovery to secure the private medical records of 30+ transgender teenagers....Read more
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Other Results 22 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....Read more

Law Glossary

What Is an Inter Partes Review (IPR)?

An inter partes review of a patent is a type of administrative trial proceeding. Inter partes review became available in 2012 and replaced inter partes reexamination as a way to challenge patentability at the Patent Office. Any person who is not the owner of a patent can file a petition for a review of a patent. The Patent Trial and Appeal Board (PTAB) will act on the petition either instituting a trial or denying institution of a trial. This will occur a little over six months after the petition is filed. If trial is instituted, the proceeding will, with some limited exceptions, be resolved within one year....Read more

Location

Silicon Valley

Launched in 2013, Winston & Strawn’s Silicon Valley office is home to nationally recognized attorneys that draw clients from Fortune 500 companies, startups, and everything in between. Led by Kelly Hunsaker—who has deep roots in Silicon Valley spanning nearly three decades—the office draws from the firm’s deep bench strength and global network of resources to serve clients in a variety of industries, including the semiconductor, computer hardware and software, telecommunications, life sciences, and pharmaceutical sectors. The office’s intellectual property attorneys have litigated extensively in all the top national patent litigation venues, as well as before the International Trade Commission and the Patent Trial and Appeals Board of the USPTO....Read more
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