Skip to main content

Nixon Peabody LLP

  • People
  • Capabilities
  • Insights
  • About
Trending Topics
    • People
    • Capabilities
    • Insights
    • About
    • Locations
    • Events
    • Careers
    • Alumni
    Practices

    View All

    • Affordable Housing
    • Community Development Finance
    • Corporate & Finance
    • Cybersecurity & Privacy
    • Entertainment & Media
    • Environmental
    • Franchising & Distribution
    • Government Investigations & White Collar Defense
    • Healthcare
    • Intellectual Property
    • International Services
    • Labor, Employment, and Benefits
    • Litigation
    • Private Wealth & Advisory
    • Project Finance
    • Public Finance
    • Real Estate
    • Regulatory & Government Relations
    Industries

    View All

    • Aviation
    • Cannabis
    • Consumer
    • Energy
    • Financial Services
    • Healthcare
    • Higher Education
    • Infrastructure
    • Manufacturing
    • Nonprofit Organizations
    • Real Estate
    • Sports & Stadiums
    • Technology
    Value-Added Services

    View All

    • Alternative Fee Arrangements

      Developing innovative pricing structures and alternative fee agreement models that deliver additional value for our clients.

    • Continuing Education

      Advancing professional knowledge and offering credits for attorneys, staff and other professionals.

    • Crisis Advisory

      Helping clients respond correctly when a crisis occurs.

    • DEI Strategic Services

      Providing our clients with legal, strategic, and practical advice to make transformational changes in their organizations.

    • eDiscovery

      Leveraging law and technology to deliver sound solutions.

    • Environmental, Social, and Governance (ESG)

      We help clients create positive return on investments in people, products, and the planet.

    • Global Services

      Delivering seamless service through partnerships across the globe.

    • Innovation

      Leveraging leading-edge technology to guide change and create seamless, collaborative experiences for clients and attorneys.

    • IPED

      Industry-leading conferences focused on affordable housing, tax credits, and more.

    • Legal Project Management

      Providing actionable information to support strategic decision-making.

    • Legally Green

      Teaming with clients to advance sustainable projects, mitigate the effects of climate change, and protect our planet.

    • Nixon Peabody Trust Company

      Offering a range of investment management and fiduciary services.

    • NP Capital Connector

      Bringing together companies and investors for tomorrow’s new deals.

    • NP Second Opinion

      Offering fresh insights on cases that are delayed, over budget, or off-target from the desired resolution.

    • NP Trial

      Courtroom-ready lawyers who can resolve disputes early on clients’ terms or prevail at trial before a judge or jury.

    • Social Impact

      Creating positive impact in our communities through increasing equity, access, and opportunity.

    • Women in Dealmaking

      We provide strategic counsel on complex corporate transactions and unite dynamic women in the dealmaking arena.

    1. Home
    2. People
    3. Daniel S. Stringfield

      People
    1. Home
    2. People
    3. Daniel S. Stringfield

      People

    Daniel S. Stringfield

    Partner


    • Chicago
    • Office+1 312.977.4400
    • dstringfield@nixonpeabody.com
    • Download vCard

    Introduction

    Daniel Stringfield is a member of the Intellectual Property (IP) Practice Group, where he focuses on IP and technology issues. A veteran patent litigator with extensive trial and appellate experience, Dan is regarded by clients as a “go-to strategist and problem-solver” who “brings an unrivaled level of dedication and preparedness to virtually everything he does.”

    Practice Areas

    Intellectual PropertyPatent LitigationPatent Mining & MonetizationAccelerators & IncubatorsCopyright, Trademark & Media Litigation

    /My focus

    As a member of the Trial Bar, a USPTO-registered patent attorney, and a former consultant, I am an advocate and trusted business advisor for my clients. I work with clients in a range of industries when they are developing new products or entering new markets in IP-intensive areas, when they are acquiring and monetizing IP portfolios, and when they need to resolve disputes in an expeditious and cost-effective manner.

    IP Acquisition, Licensing, and Enforcement

    My practice is primarily focused on helping clients acquire and monetize IP assets and resolve IP disputes through licensing and litigation. I represent both plaintiffs and defendants in disputes involving a broad range of technologies, including networking, semiconductors, computer processors, wireless communication, and optics. I also have significant experience advising companies on IP and product strategy.

    I combine my engineering and consulting backgrounds with my legal experience to gain a complete understanding of the business, technology, and legal issues my clients face. My engineering experience allows me to deeply understand the technology at issue so I can effectively advocate for my clients by explaining complex technological concepts to adversaries, judges, and juries in an understandable way. One of the greatest compliments I have received from a client was, “[our company] has its choice of any number of incredibly talented IP lawyers. But what sets Dan apart is that he listens to us. He understands and cares about our business, our products, and our technology."

    I have litigated patent disputes before the Patent Trial and Appeals Board (PTAB), the International Trade Commission (ITC), and district courts across the country. In my appellate practice, I have served as counsel of record in patent cases before the U.S. Supreme Court and the U.S. Court of Appeals for the Federal Circuit.

    /Representative experience

    • Representing multiple companies in connection with the acquisition, licensing, and enforcement of valuable patent portfolios related to networking, semiconductor, computer processor, wireless communication, and optical technologies.
    • Represented one of the world’s largest LED manufacturers, as both plaintiff and defendant, in multiple patent cases related to semiconductor technologies before the PTAB and multiple district courts.
    • Represented electrical and networking infrastructure manufacturer Panduit, as both plaintiff and defendant, in multiple patent suits related to fiber optic networking technology before the PTAB, multiple district courts, ITC, and Federal Circuit.
    • Served as counsel of record representing Licensing Executives Society (USA and Canada), Inc. as amicus curiae in multiple precedent-setting patent cases before the Supreme Court and the Federal Circuit.

    /Looking ahead

    IP transactions and monetization will continue to increase for at least two reasons. First, the stigma that once precluded large companies from selling their portfolios to monetization entities has disappeared. Second, companies with large portfolios will look to divest IP in non-core technologies to generate cash as macroeconomic conditions worsen.

    /In the news

    • Law360

      Full Federal Circuit urged to set tighter rules on patent damages

      This article covers a total of 18 amicus briefs filed this week in EcoFactor Inc. v. Google LLC, asking the Federal Circuit to rule that district judges must carefully scrutinize expert testimony seeking large damages in patent cases and exclude unreliable opinions, rather than allowing juries to decide how much weight to give them. The article mentions NP for filing an amicus brief on behalf of the Licensing Executives Society. The team includes Chicago partner Dan Stringfield and counsel Matt Zuziak, and Albany associate Alec Royka, all of the Intellectual Property practice.

      Nov 27, 2024

    /Admitted to practice

    Illinois Supreme Court
    U.S. District Court, Northern District of Illinois
    U.S. District Court, District of Colorado
    U.S. District Court, Eastern District of Michigan
    U.S. District Court, Eastern District of Texas
    U.S. District Court, Western District of Texas
    U.S. Court of Appeals, Federal Circuit
    U.S. Patent and Trademark Office

    /Education

    Chicago-Kent College of Law, Illinois Institute of Technology, J.D.
    University of Illinois Chicago, M.S., Mechanical Engineering
    University of Illinois Chicago, B.S., Mechanical Engineering

    /Professional activities

    • Licensing Executives Society (USA and Canada), Inc.

    /Recognition

    • Chicago Daily Law Bulletin, “40 Under Forty” (2019)
    • Super Lawyers, Illinois, “Rising Star,” Intellectual Property Litigation (2016–2019)

    Professionals in the Practice Area

    View All
    • Seth D. Levy

      Partner / Leader, Intellectual Property Practice
      • Los Angeles
      • Office:+1 213.629.6161
      • slevy@nixonpeabody.com
      Seth D. Levy
    • Daniel J. Schwartz

      Partner / Deputy Leader, Intellectual Property Practice
      • Chicago
      • Office:+1 312.977.4432
      • djschwartz@nixonpeabody.com
      Daniel J. Schwartz
    • Erica J. Van Loon

      Partner / Team Leader, Copyright, Trademark, & Media Litigation
      • Los Angeles
      • Office:+1 213.629.6031
      • evanloon@nixonpeabody.com
      Erica J. Van Loon
    • Janet M. Garetto

      Partner / Co-Lead, Food, Beverage, & Agribusiness IP Team
      • Chicago
      • Office:+1 312.425.8514
      • jgaretto@nixonpeabody.com
      Janet M. Garetto
    • Sasha G. Rao

      Partner
      • San Francisco
      • Office:+1 415.984.8345
      • srao@nixonpeabody.com
      Sasha G. Rao
    View All

    Subscribe to stay informed of the latest legal news, alerts, and business trends.Subscribe

    • People
    • Capabilities
    • Insights
    • About
    • Locations
    • Events
    • Careers
    • Alumni
    • Cookie Preferences
    • Privacy Policy
    • Terms of Use
    • Accessibility Statement
    • Statement of Client Rights
    • Purchase Order Terms & Conditions
    • Nixon Peabody International LLC
    • PAL
    © 2025 Nixon Peabody. All rights reserved