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Kathryn L. Clune

Phone: +1 202.624.2705
1001 Pennsylvania Avenue NW
Washington, DC 20004

Kathryn ("Katie") Clune is a trial attorney with 25+ years of experience and co-leads the ITC & 337 Litigation practice at Crowell & Moring. Katie focuses on patent, trademark, and trade secrets litigation in both district courts and before the International Trade Commission, where she has had significant success in both affirmative and defensive “Section 337” cases. Katie recently won a 337 action brought against her client DuPont, resulting in the termination of the investigation and complete victory for her client. Katie also recently won two preliminary injunctions and a TRO on behalf of three sustainable energy companies in the Court of International Trade. In 2019, Katie won a jury trial for Siemens Mobility, where all eight patents were found valid and infringed. And, in a related case, Katie also defeated a motion for a preliminary injunction filed against Siemens Mobility. Katie was also a member of the Crowell team that obtained a $920 million verdict on behalf of DuPont against Kolon Industries for its theft of DuPont’s KEVLAR® trade secrets, drafting the winning injunction motion excluding Kolon’s infringing products from entry into the United States for 20 years.

Katie represents companies in IP and trade disputes in a variety of industries, including chemicals, polymers, solar, consumer electronics, automotive, railroad and electrical fittings. Katie's patent litigation experience in the ITC, district court, and Federal Circuit led her to being featured as one of the "Top 50 under 45" attorneys in IP Law & Business. She has also been recognized in Patexia’s 2021 guide as one of the “Top 50 Best Performing Lawyers” overall and one of the “Top 30 Best Performing Lawyers” for respondent clients (based activity, performance, and results in ITC Section 337 investigations over a six-year period).

Katie is also a seasoned appellate advocate, having argued numerous cases in federal appellate courts, including the United States Court of Appeals for the Federal Circuit and the U.S. Court of Appeals for the Armed Forces. Prior to joining Crowell & Moring, Katie served in the U.S. Navy Judge Advocate General's Corps, where she gained extensive trial and appellate experience. After Katie left the JAG Corps, she was immediately recruited to become a law clerk for the former Chief Judge Andrew S. Effron, U.S. Court of Appeals for the Armed Forces.

Significant Representations

United States Court of International Trade

Section 337 Investigations

  • Certain Synthetic Roofing Underlayment Products (337-TA-1202): Represented DuPont in a Section 337 Investigation related to synthetic roof underlayment products. Based on successful Markman Order on a dispositive claim term, patentee terminated the entire case, resulting in total victory for DuPont.
  • Certain Carburetors (337-TA-1123): Represented MTD Products in a Section 337 Investigation involving hand-held outdoor equipment.  Won early termination after Complainant stipulated that client’s currently imported products did not infringe asserted patents.
  • Certain RF Microneedles (337-TA-1112): Represented Lumenis Ltd. & Pollogen Ltd. in a Section 337 Investigation regarding radio frequency skin treatment devices. Lead trial attorney at hearing where ALJ tentatively ruled the asserted patent was invalid.  Entered favorable settlement with no exclusion after hearing.
  • Certain Vehicular Smart Watch Systems, Related Software (337-TA----): Represented General Motors Company and OnStar in multi-forum litigation involving a smart watch-based mobile app for controlling vehicle security and diagnostics functions. Launching an aggressive counter-offensive against the plaintiff and its principal, we forced the plaintiff to drop its complaints in both the district court and the ITC, pre-institution.
  • Certain Sulfentrazone, Sulfentrazone Compositions (337-TA-914): Represented DuPont in hotly contested third-party discovery dispute, limiting testimony to only public information regarding DuPont's products.
  • Certain Non-Volatile Memory Devices (337-TA-909): Represented General Motors as a third party presenting public interest testimony at deposition and at the hearing. Parties settled shortly after hearing.
  • Certain Communication Equipment (337-TA-817): Represented respondent Avaya in an investigation related to Power over Ethernet (PoE) features in telephones, switches, and wireless access points. Settled favorably.
  • Certain Automotive GPS Navigation Sys. (337-TA-814): Represented respondent General Motors LLC in an investigation related to automobiles with in-dash GPS navigation systems. Won dismissal of GM and termination of the investigation after six months, with no exclusion.
  • Certain Polyimide Films (337-TA-772): Represented DuPont in hotly contested third-party discovery dispute, successfully quashing a third-party subpoena for deposition and presenting very limited trial testimony.
  • Certain Adjustable-Height Beds (337-TA-734): Represented complainant Invacare in an investigation related to adjustable hospital beds, resulting in Consent Order excluding accused products from entry into the U.S.
  • Certain Semiconductor Integrated Circuits (337-TA-665): Represented respondent LSI, Inc. against complainant Qimonda AG, obtaining Final Determination of non-infringement on five patents and defeating the complainant's claim of domestic industry.
  • Baseband Processor Chips and Chipsets (337-TA-543): Represented Intervenor Sprint Nextel Corp. in an investigation brought by Broadcom against Qualcomm. Lead counsel during the remedy phase, the Presidential Review Period, before Customs, and during the Enforcement Action, as well as at the Federal Circuit, obtaining a stay pending appeal and full reversal of ITC’s exclusion order.
  • Certain Laminated Floor Panels (337-TA-545): Represented 6 of 32 respondents in investigation. Lead counsel at two week hearing, resulting in a finding of Initial Determination of invalidity of broadest patent.

District Court and Military Trial Experience

  • Siemens Mobility, Inc. v. Westinghouse Air Brake Technologies, (D. Del. 2016-present): Won jury trial in favor of Siemens involving Siemens’ patented Positive Train Control Technology. Final Judgment was entered affirming the jury verdict and awarding Siemens $14.2 million in damages.
  • The Regents of the University of California v. Boston Scientific Corp., St. Jude Medical, & Atricure, (N.D. Cal. 2016-2018): Represented The Regents of the University of California against three medical device manufacturers in three patent litigations involving patented methodology and cardiac ablation devices to treat atrial fibrillation. After two years of litigation, the parties all reached an amicable settlement.
  • Spark Networks USA, LLC v. Smooch Labs, Inc., (S.D.N.Y. 2015): Represented plaintiff (owner of JDate) in a hotly contested patent and trademark infringement action against the mobile application “JSwipe,” resulting in a favorable settlement and acquisition of Smooch Labs, owner of JSwipe.
  • Arlington Industries, Inc. v. Bridgeport Fittings, Inc. (M.D. Pa. 2013): Won contempt trial on behalf of patentee, proving the competitor's "re-designed products" were within scope of previously issued injunction. The court enjoined the re-designed products for five years, awarded lost profits for all sales and attorney fees.
  • Greenville Communications, LLC v. Verizon Wireless (D.N.J. 2012): Won non-infringement judgment of all Sprint's "call-tone" services after successful Markman decision.
  • Arlington Industries, Inc. v. Bridgeport Fittings, Inc, (M.D. Pa. 2009): Won jury verdict of willful patent infringement, breach of contract, and lost profits.
  • Carlson et al. v. Islamic Republic of Iran, 201 F. Supp. 2d 78 (D.D.C. 2002): Obtained $7.8 million verdict in compensatory damages and $300 million in punitive damages on behalf of 10 former military members and spouses in suit against Iran under Anti-Terrorism Act for damages resulting from the 1985 Hijacking of TWA Flight 847.
  • As a Navy Lieutenant, successfully defended a Marine Aviator in an internationally publicized General Court-Martial. The client was charged with 20 counts of Involuntary Manslaughter arising from an aviation accident with a gondola cable in Northern Italy.

Appellate Experience

  • Bridgeport Fittings, Inc. v. Arlington Industries, Inc., No. 2015-1616, -1617 (Fed. Cir. 2016): Argued and won consolidated appeals affirming the validity of two patents from inter partes reexaminations.
  • Arlington Industries, Inc. v. Bridgeport Fittings, Inc., No. 2014-1633 (Fed. Cir. 2015): Argued and won affirmance of the district court's claim construction, colorable imitation and infringement findings, and sanctions award of lost profits, attorney fees and expenses.
  • Arlington Industries, Inc. v. Bridgeport Fittings, Inc., No. 2013-1357 (Fed. Cir. 2014) (opinion, 759 F.3d 1333) Argued and won dismissal of an untimely interlocutory appeal.
  • Greenville Communications, LLC v. Verizon Wireless, No. 2012-1676 (Fed. Cir. 2013): Won affirmance of non-infringement judgment on appeal.
  • Arlington Industries, Inc. v. Bridgeport Fittings, Inc., No. 2010-1025 (Fed. Cir. 2011) (opinion, 632 F.3d 1246): Argued and won reversal of summary judgment of non-infringement of two patents.
  • Kyocera Wireless et al., v. Int'l Trade Comm'n, No. 2007-1493, (Fed. Cir. 2008) (opinion, 545 F.3d 1340): Won reversal of ITC exclusion order in landmark decision holding the ITC lacked authority to issue limited exclusion orders banning imports of companies not named as respondents in the investigation.
  • United States Court of Appeals for the Armed Forces and the Navy & Marine Corps Appellate Court: As a Navy Lieutenant represented several hundred Sailors and Marines in felony appeals before both courts.

Awards & Recognition

  • One of the “Top 50 Best Performing Lawyers” overall and one of the “Top 30 Best Performing Lawyers” for respondents by Patexia (ITC Intelligence Guide, 2021)
  • Best Trial Advocate: New York City Trial Lawyers Association
  • Best Paper: NY State Bar Association, Committee on Legal Education & Admission to the Bar
  • Top “50 under 45" attorneys in IP Law & Business in May 2008.
  • Navy & Marine Corps Commendation Medal
  • Navy & Marine Corps Achievement Medal with Gold Star
  • National Defense Service Medal
  • Navy & Marine Corps Overseas Service Ribbon with Gold Star
  • NATO Medal


  • Albany Law School, J.D., cum laude
  • St. Lawrence University, B.A. Political Science


Admitted to practice: District of Columbia, New York, U.S. Supreme Court, the U.S. Court of Appeals for the Federal Circuit, the U.S. Court of International Trade, the U.S. Court of Appeals for the Armed Forces, U.S. Court of Federal Claims, American Intellectual Property Law Association, American Bar Association; NYS Bar Association; Women in IP

View More

Patexia Insight 110: Leading ITC Law Firms of 2021 Patexia (July 1, 2021)
Media Mentions
Crowell & Moring Ranked Among Top Section 337 U.S. ITC Firms in Patexia’s 2021 ITC Intelligence Report (Apr.01.2021)
Firm News / Announcement
"ALJ’s Initial Determination Implicates Scope Of Territorial Jurisdiction And Trade Secret Protections Against Unfair Imports," IP Litigator (November/December 2020). Authors: Kathryn L. Clune, Joshua Pond, Vincent J. Galluzzo, and Kayvan M. Ghaffari.
Trade Court Keeps Solar Tariff Expansion Challenge Alive Law360 (May 27, 2020)
Media Mentions
"7 Ways COVID-19 Product Makers Can Mitigate IP Infringement," Law360 (April 7, 2020). Authors: Mark Supko, Kathryn L. Clune, Brian Paul Gearing, Ph.D, John E. McCarthy, Jr. and Nicole Owren-Wiest.
Preliminary Injunction Granted Against U.S. Government in Solar Energy Tariff Case (Dec.06.2019)
Firm News / Announcement
Siemens Train Control Patent Award Boosted To $14.2M Law360 (August 19, 2019)
Media Mentions
LITIGATION NOTE: Crowell & Moring Client Siemens Mobility Inc. Awarded $6.7 Million in IP Suit (Jan.25.2019)
Firm News / Announcement
Arlington Wins $1.4M in Fees in Patent Row with Bridgeport Law360 (June 28, 2016)
Media Mentions
"Trade Secret Misappropriation and More: ITC Bars Importation of a Foreign Producer’s Stainless Steel Products for 16 Years," Trade Secrets Alert (June 17, 2016). Contacts: Mark A. Klapow, Kathryn L. Clune, Jay DeSanto
Client Alert / Newsletter

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Crowell & Moring LLP is an international law firm with offices in the United States, Europe, MENA, and Asia that represents clients in litigation and arbitration, regulatory and policy, and transactional and corporate matters. The firm is internationally recognized for its representation of Fortune 500 companies in high-stakes litigation and government-facing matters, as well as its ongoing commitment to pro bono service and diversity, equity, and inclusion.

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