About Cyrus T. Frelinghuysen

Cyrus Frelinghuysen focuses his practice on intellectual property and trade matters, concentrating in particular on unfair import (a.k.a., Section 337) investigations before the U.S. International Trade Commission (ITC). Cyrus has represented both complainants and respondents in all phases of Section 337 proceedings. The cases Cyrus has handled have involved a variety of technologies, such as telecommunications equipment, mobile devices, semiconductors, and pharmaceuticals. Cyrus has also advised clients on compliance and enforcement matters, including matters involving U.S. Customs and Border Protection (CBP), the Office of Foreign Assets Control (OFAC), and the Foreign Corrupt Practices Act (FCPA).

Concentrations

•International Trade Commission's Section 337 litigation
•Patent litigation
•International trade and compliance

Recognition & Leadership

Awards & Accolades

•Listed, The Legal 500 United States, 2025
•Intellectual Property> Patents: Litigation (International Trade Commission), 2025 Listed, Super Lawyers Magazine, Washington, D.C. Super Lawyers, “Rising Star,” 2014-2018
•Listed, Capital Pro Bono Honor Roll, 2012

 

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Services

Areas of Law

  • Intellectual Property 1
    • Trade Secrets
  • Other 3
    • Intellectual Property Litigation
    • International Trade Commission's Section 337 Litigation
    • Intellectual Property & Technology

Practice Details

  • Languages
    Chinese (M
    arin)
    Conversational
  • Firm Information
    Position
    Shareholder
    Firm Name
    Greenberg Traurig, LLP
  • Representative Cases & Transactions
    Cases
    Experience: Representative Matters: Certain Solar Power Optimizers, Inverters,
    Components Thereof, Inv. No. 337-TA-1327. Represented complainant in an investigation involving power optimizers used in large solar plants. The investigation settled prior to an evidentiary hearing.
    Certain Televisions, Remote Controls,
    Components Thereof, Inv. No. 337-TA-1263. Represented certain respondents in an investigation initiated by Roku involving television remote controls. The ITC found the asserted patent invalid as indefinite. An appeal is pending before the Federal Circuit.
    Certain Adalimumab, Processes for Manufacturing or Relating to Same,
    Products Containing Same, Inv. No. 337-TA-1296. Represented certain respondents in an investigation involving claims of trade secret misappropriation related to the process for manufacturing HUMIRA . The investigation was terminated based on a settlement.
    Certain Filament Light-Emitting Diodes
    Products Containing Same (II), Inv. No. 337-TA-1220. Defended a respondent that is a leading supplier of lighting products in an investigation initiated by the Regents of the University of California. The ITC found all four asserted patents to be invalid,
    that determination was affirmed by the Federal Circuit.
    Certain Nicotine Pouches
    Components Thereof
    Methods of Making the Same, Inv. No. 337-TA-1192. Represented respondents in an investigation involving nicotine pouches. The investigation was terminated after the complainant withdrew its complaint just prior to a claim construction hearing.
    Certain Shaker Screens for Drilling Fluids, Components Thereof,
    Related Marketing Materials, Inv. No. 337-TA-1184. Obtained the issuance of a general exclusion order against infringing shaker screens used to filter
    recycle drilling muds used in oil
    gas drilling.
    Certain Modular LED Display Panel & Components Thereof, Inv. No. 337-TA-1114. Represented respondent that was a U.S.-based distributor of LED display panels. The investigation was terminated after the close of fact discovery when the complainant withdrew its complaint.
    Certain Graphics Processors, DDR Memory Controllers, & Products Containing the Same, Inv. No. 337-TA-1037. Represented downstream respondents in an investigation targeting their suppliers. The investigation was terminated based on a settlement prior to a hearing.
    Certain Digital Video Receivers & Hardware & Software Components Thereof, Inv. No. 337-TA-1001. Represented lead respondent in an investigation involving set-top boxes.
    Certain Wireless St
    ard Compliant Electronic Devices, Including Communication Devices
    Tablet Computers, ITC Inv. No. 337-TA-953. Represented complainant in an investigation involving cellular telecommunications technology. The investigation was terminated prior to a hearing on violation.
    Certain Electronic Devices, Including Wireless Communication Devices, Computers, Tablet Computers, Digital Media Players,
    Cameras, ITC Inv. No. 337-TA-952. Represented complainant in an investigation involving technologies related to critical features of wireless devices. The investigation was terminated following a hearing but prior to issuance of an initial determination.
    Certain Nonvolatile Memory Devices
    Products Containing Same, ITC Inv. No. 337-TA-909. Represented complainant in an investigation involving nonvolatile memory products. The investigation was terminated after a hearing
    just two days prior to the expected issuance of the initial determination.
    Certain Flash Memory Chips
    Products Containing Same, ITC Inv. No. 337-TA-853. Defended respondents in an investigation involving flash memory products. The investigation was terminated after a hearing but prior to the issuance of an initial determination.
    Certain Gemcitabine
    Products Containing Same, ITC Inv. No. 337-TA-766. Defended respondent
    its China-based supplier in an investigation involving a chemotherapy medication. The investigation was terminated prior to a hearing on violation.
    Represented manufacturer of ophthalmic lenses in patent litigation against major competitor. The matter was settled.
    Represented major mobile device designer
    manufacturer in patent litigation involving patents alleged to be essential to mobile st
    ards. The case was settled.
    Conducted internal investigation of potential FCPA violations by a multinational corporation with respect to operations worldwide, including China, Hong Kong, Indonesia, Korea, Thail
    , Vietnam,
    the Philippines.
    Prepared numerous OFAC license applications for companies seeking to engage in otherwise prohibited transactions in countries such as Burma, Cuba, Iran, Sudan,
    Syria.
    Prepared voluntary disclosure materials for submission to OFAC, resulting in issuance of a cautionary letter instead of imposition of monetary penalties.
    Pro bono application for hardship exemption for a member of the armed services.
    Pro bono application for asylum for a Palestinian woman.
    Pro bono petition for the removal of conditions on residence for a victim of domestic violence married to a U.S. citizen.
    The above representations were h
    led by Mr. Frelinghuysen prior to his joining Greenberg Traurig, LLP.
  • Additional Links

Experience

  • Bar Admission & Memberships
    Admissions
    2008, New York
    2009, District of Columbia
    Memberships

    Professional & Community Involvement

    •Member, American Bar Association
    •Member, International Law Section
    •Member, Intellectual Property Law Section
    •Member, Antitrust Law Section
    •Member, International Trade Commission Trial Lawyers Association
    •Member, American Intellectual Property Law Association
    •Member, AIPLA Quarterly Journal Editorial Board
    •Member, Steering Committee, Young Professionals Network, Mid-Atlantic Innocence Project

  • Education & Certifications
    Law School
    Georgetown University Law Center
    J.D.
    Executive Editor, Georgetown International Environmental Law Review
    Other Education
    John Hopkins University, Paul H. Nitze School of Advanced International Studies
    M.A.
    International Relations and International Economics

    Princeton University
    A.B.
  • Personal Details & History
    Age
    Born in 1974
    1974
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Attorneys FAQs

  • Does this attorney speak any other languages?
    Cyrus T. Frelinghuysen speaks Chinese (Mandarin) and Conversational.
  • How many attorneys are in this law firm?
    Greenberg Traurig, LLP has 2750 attorneys at this location.
  • What law school did this attorney attend?
    Cyrus T. Frelinghuysen attended Georgetown University Law Center.
  • What year was this attorney's law firm established?
    Greenberg Traurig, LLP was established in 1967.