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  • Professionals (78)
  • Capabilities (20)
  • Experience (5)
  • Insights & News (300)
  • Other Results (13)

Professionals 78 results

Joseph C. Masullo
Joseph C. Masullo
Of Counsel
  • Washington, DC
Email
+1 202-282-5897
vCard

Of Counsel

  • Washington, DC
Lauren M. Rennecker
Lauren M. Rennecker
Associate
  • Washington, DC
Email
+1 202-282-5268
vCard

Associate

  • Washington, DC
Paul Park
Paul Park
Advisor
  • Dallas
Email
+1 214-453-6454
vCard

Advisor

  • Dallas
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Capabilities 20 results

Practice Area

Intellectual Property

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....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

Industry

Retail & Luxury

We help retail and luxury clients navigate challenges around the globe as they protect and expand their brands. We serve as trusted advisors and valued business partners, handling some of the industry’s highest-profile litigation, regulatory matters, and deals. Our track record of successes in both state and federal courts is a testament to our prowess in consumer fraud, product liability, and antitrust litigation and our commitment to excellence extends to our transactional representation, ensuring swift, seamless, smooth, and cost-efficient deals for our retail and luxury clients....Read more

Experience 5 results

Experience

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May 15, 2025

Winston Secures Federal Circuit Victory for Snap Axing Image-Presentation Patents on the Pleadings

Ask Sydney sued Snap along with four large tech companies in the Western District of Texas, Waco Division, asserting infringement of two related patents on methods of generating and presenting images to a user to determine the user’s interest.  Working closely with Snap, Winston successfully moved to transfer the case to the Central District of California, then moved for judgment on the pleadings of patent-ineligibility under § 101 of the Patent Act.  Following a hearing with multiple rounds of argument, the district court granted the motion, adopting Winston’s arguments that distinguished findings by the patent examiner during prosecution and by the Western District of Texas, which had denied § 101 motions brought by two other defendants.  Ask Sydney appealed, but the Federal Circuit summarily affirmed three days after oral argument, handing Snap a decisive win invalidating all claims of both asserted patents. Eimeric Reig led the strategy and argued the appeal and motion hearing, working with Kathi Vidal and Kelly Hunsaker....Read more

Experience

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April 30, 2025

Federal Circuit Backs PayPal

In December 2022, Winston convinced Judge Albright of the W.D. Tex. to reverse his tentative construction and invalidate four patents based on means-plus-function indefiniteness at claim construction in the district court. Winston also persuaded Judge Albright to deny Fintiv’s motion for reconsideration the next month. Fintiv appealed to the Federal Circuit, which affirmed the district court in a precedential opinion in April 2025. Winston overcame a significant amount of sleight of hand from Fintiv, which continually shifted the purported structure of the “payment handler” term through claim construction, its motion for reconsideration, and appellate briefs, muddying the record. Ultimately the opinion clearly distinguished the factual record from that in Dyfan v. Target, curbing patentees abilities to argue that all code or applications are a “class of structures” and not indefinite under 112(f). The Federal Circuit affirmed four of the five patents Winston invalidated for PayPal, effectively foreclosing Fintiv’s ability to revive these patents for assertion. Winston also invalidated the fifth patent at the PTAB; Fintiv’s appeal of that Final Written Decision is pending....Read more

Experience

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January 19, 2024

ITC ALJ Issues Win for AMD

Served as lead trial counsel to defend AMD in a massive ITC action brought against AMD by its competitor Realtek Semiconductor Corp. Realtek accused AMD of infringing three patents relating to integrated circuit designs. AMD faced an exclusion order and a cease-and-desist order at the ITC. Administrative Law Judge (ALJ) Cameron Elliot’s decision found that all asserted claims of two of the patents were invalid for multiple reasons. For the third patent, he ruled that all asserted claims were not infringed by AMD, and that all but one of those claims were also invalid. ALJ Elliot also found that Realtek had not proven the existence of the economic prong of domestic industry—a rare outcome at the ITC. The win is significant for AMD because dozens of its product families were implicated. It also sends a signal to non-U.S. companies that the ITC’s domestic-industry requirement has teeth and cannot be assumed to exist based merely on a patentee’s alleged licenses with U.S.-based entities....Read more
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Insights & News 300 results

Article

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August 25, 2025

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7 Min Read

Adapting To USPTO’s Tighter Inter Partes Review Rules

This article was originally published in Law360. Any opinions in this article are not those of Winston & Strawn or its clients. The opinions in this article are the authors’ opinions only....Read more

Product Liability & Mass Torts Digest

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August 22, 2025

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5 Min Read

District Court Recognizes Loper Bright Does Not Undermine Basis for Express-Preemption Defense in Medical Device Cases

In what appears to be the first case to consider the issue, an Eastern District of Missouri court recently rejected the argument that the Supreme Court’s Loper Bright Enterprises v. Raimondo decision overruling Chevron deference undermines the basis for express preemption in medical device cases.

 

Client Alert

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June 10, 2025

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3 Min Read

PTAB Acting Director Denies IPR Merely Because Petitioner Knew of the Challenged Patent Over a Decade Ago

We previously reported how the PTAB’s institution rate has fallen to approximately 40% in the new administration, with many of those denials stemming from the PTAB’s increased usage of its discretionary denial processes to deny IPR challenges without otherwise addressing the merits of the identified prior art. The latest grant of discretionary denial continues that trend and exemplifies the current challenges in pursuing IPR/PGR invalidity challenges at the U.S. Patent Office. 

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Other Results 13 results

Law Glossary

What Are the Patent Litigation Differences Between the BPCIA and Hatch-Waxman Act?

There are fundamental differences between the abbreviated approval processes to obtain FDA approval for biosimilars and generic drugs as those processes relate to patent litigation....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

Location

Charlotte

Founded in 2008, Winston & Strawn’s Charlotte, North Carolina office of 25+ lawyers, includes firm leaders such as Kobi Kennedy Brinson—represents many major national and international companies headquartered in the city. Our Charlotte office also provides legal services to all of the top ten financial services companies in the U.S., which aligns with Charlotte’s reputation as the second-largest banking center in the country....Read more
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