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David K. Mroz
Partner
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  • 901 New York Avenue, NW
  • Washington, DC 20001-4413
+1 202 408 4022
david.mroz@finnegan.com david.mroz@finnegan.com

David K. Mroz

Partner

  • +1 202 408 4022 +1 202 408 4022
  • david.mroz@finnegan.com david.mroz@finnegan.com
  • 901 New York Avenue, NW
  • Washington, DC 20001-4413
  • vCard

David Mroz practices all aspects of patent law and trade secret law in a wide spectrum of technologies. He represents innovative companies in complex, high-risk litigations at both the trial and appellate levels and knows how to strategically build and present a client’s case to a judge or jury.

In U.S. district courts, David has tried cases to verdict and managed both the liability and damages phases of patent and trade secret litigation. He has examined witnesses at jury trials, argued at motion and claim construction proceedings, drafted briefs on dispositive issues, taken depositions, and prepared corporate and expert witnesses to testify. David’s experience extends to the U.S. International Trade Commission (ITC), where he has litigated at all stages of investigations, including trial.

 

David has also argued and drafted numerous briefs at the U.S. Court of Appeals for the Federal Circuit, where he previously served as a clerk. He also clerked at the Eastern District of Virginia. At the U.S. Patent and Trademark Office (USPTO), David has procured patents through prosecution and successfully represented parties in post-grant proceedings such as inter partes reviews (IPR) and ex parte reexaminations.

 

In addition to intellectual property disputes, David works with clients to strategically develop and license patent portfolios worldwide, often with the goal of avoiding or ending litigation. He also helps clients navigate competitors’ patent rights by providing opinions of counsel on patent infringement, patent validity, and other intellectual property issues.

 

 

 

 

NOTE: No aspect of these rankings has been approved by the Supreme Court of New Jersey. Further information on methodologies is available via these links.

Et Cetera

  • Served as a judicial law clerk to the Honorable Sharon Prost at the U.S. Court of Appeals for the Federal Circuit (2011-2012), and to the Honorable Liam O'Grady at the U.S. District Court for the Eastern District of Virginia (2008-2009). 
  • Worked at the USPTO as a confidential assistant to the deputy director, 2005 and 2006.
  • Served on the editorial board of the Virginia Journal of Law and Technology, 2006-2008.

Experience

Ericsson Inc. v. TCL Communication Technology

Finnegan was hired for this appeal after TCL received an unfavorable judgment of willful infringement, which resulted in a damages award of over $110 million. After Finnegan convinced the Federal Circuit that the claims were patent ineligible under 35 U.S.C. § 101, the court reversed the district court’s ruling of no invalidity, vacated the entire judgment against TCL, and awarded costs to TCL. Based on that award, Finnegan further persuaded the Eastern District of Texas to tax $2.35 million in costs.

18-2003, Fed. Cir., Judges Newman, Prost, Chen

Trade secret and breach of contract dispute resolved with favorable settlement for Finnegan client Meati Foods

Finnegan represented Emergy, Inc., d/b/a Meati Foods in a trade secret misappropriation, breach of contract, and correction of inventorship case against The Better Meat Company (BMC) and Augustus Pattillo involving alternative meat made from mycelium.

Emergy alleged that Augustus Pattillo stole its trade secrets on the cultivation and production of mycelium that he learned while working as a lab technician for Emergy’s founders, misused them in his work with BMC, breached his nondisclosure agreement with Emergy, and improperly filed patent applications on Emergy’s technology and assigned them to BMC.

BMC filed claims of tortious interference and unfair competition against Emergy, which Emergy succeeded in striking under California’s anti-Strategic Lawsuits Against Public Participation (SLAPP) statute. After prevailing under the anti-SLAPP statute, Emergy was statutorily entitled to recover its reasonable attorneys’ fees and costs for defending against BMC’s stricken claims of tortious interference and unfair competition

Early in the litigation, Emergy defeated BMC’s motion to dismiss Emergy’s trade secret misappropriation and breach of implied contract claims. Emergy later defeated BMC’s motion for summary judgment on Emergy’s trade secret misappropriation, breach of contract, and breach of implied contract claims. The case settled soon after the Court issued its summary judgment ruling.

2-21-cv-02338, E.D. Cal., Judge Mueller
2-21-cv-02417, E.D. Cal., Judge Mueller

Aqua Products. Inc. v. Matal

Represented patent owner Aqua Products/Fluidra in appeal involving robotic pool cleaners; successfully petitioned Federal Circuit for en banc review of statutory burden of proof issue; en banc court changed legal standard and vacated invalidity ruling against Fluidra.

15-1177, Fed. Cir., Judges Chen, Dyk, Hughes, Lourie, Moore, Newman, O'Malley, Prost, Reyna, Taranto, Wallach

Maglula, Ltd. v. Amazon.Com, Inc. et al

Represented Maglula Ltd. in a district court litigation alleging that Amazon committed patent, trademark, and copyright infringement through its sale of counterfeit consumer products. After Maglula won all claim construction disputes, and after the Court denied Amazon’s summary judgment motion and found that “Amazon’s attempts to avoid liability” would “have minimal impact before a jury,” the parties entered into an agreement and the case was dismissed.

1:19-cv-01570, E.D. Va., Judge O'Grady

Applied Medical Resources Corp. v. Tyco Healthcare Group LP

In an appeal involving trocar devices, obtained an affirmance from the Federal Circuit of the district court’s finding of no infringement.

12-1412, Fed. Cir., Judges Prost, Reyna, Schall

Omega Patents LLC v. BMW of North America LLC

Successfully represented BMW of North America LLC in a Federal Circuit appeal brought by Omega Patents LLC involving vehicle remote start technology, obtaining an affirmance of the Patent Trial and Appeal Board’s findings of invalidity in an inter partes review filed by Finnegan. The appeal confirmed that all claims of the patent Omega asserted against BMW in the District Court of Delaware were invalid.

22-2012, Fed. Cir., Judges Hughes, Reyna, Stark
IPR2021-00181, PTAB, Judges Deshpande, Hagy, Wieker
1:20-cv-01907, N.D. Ga., Judge Grimberg
1:21-cv-00030, D. Del., Judge Bryson

More

Insights

Webinar

Avoiding Early Landmines in Trade Secret Litigation

Avoiding Early Landmines in Trade Secret Litigation Avoiding Early Landmines in Trade Secret Litigation

December 12, 2024

Webinar

Articles

Maglula Beats Amazon in Counterfeit Claims

Maglula Beats Amazon in Counterfeit Claims Maglula Beats Amazon in Counterfeit Claims

December 29, 2021

Haaretz Annual Tech Book

Articles

The Federal Circuit’s Travel Sentry Case Broadens Divided Infringement Standard in a Way that Makes Method Claims More Viable in Litigation The Federal Circuit’s Travel Sentry Case Broadens Divided Infringement Standard in a Way that Makes Method Claims More Viable in Litigation

July/August 2018

IP Litigator

Articles

Thinking Ahead on Standing: Using Evidence from Outside the License Agreement to Overcome Bare Licensee Status Thinking Ahead on Standing: Using Evidence from Outside the License Agreement to Overcome Bare Licensee Status

March/April 2018

IP Litigator

Articles

Venue Challenges After TC Heartland: Move Fast or Risk Waiver Venue Challenges After TC Heartland: Move Fast or Risk Waiver

January/February 2018

IP Litigator

Articles

Maximizing Damages: The Importance of Considering Marking Law When Selecting Claims to Assert in Litigation Maximizing Damages: The Importance of Considering Marking Law When Selecting Claims to Assert in Litigation

September/October 2017

IP Litigator
More

Professional Recognition

"David Mroz and Brian Kacedon are both very engaged, friendly, business-oriented and focused on enabling opportunity for clients."

The Legal 500 U.S.

"David Mroz and Brian Kacedon are both very engaged, friendly, business-oriented and focused on enabling opportunity for clients."

The Legal 500 U.S.

News

Award/Ranking

61 Finnegan Attorneys Recognized on the 2025 Capital Pro Bono Honor Roll 61 Finnegan Attorneys Recognized on the 2025 Capital Pro Bono Honor Roll

May 7, 2026

Press Release

Pvtech Secures Stay of New Jersey District Court Litigation Following USPTO Institution of All 10 Ex Parte Reexamination Requests Against Patents Asserted by Jiaxing Super Lighting Pvtech Secures Stay of New Jersey District Court Litigation Following USPTO Institution of All 10 Ex Parte Reexamination Requests Against Patents Asserted by Jiaxing Super Lighting

April 28, 2026

Press Release

Pvtech Achieves Perfect Record at USPTO: Institution of All 10 of 10 Ex Parte Reexamination Petitions Against Patents Asserted by Jiaxing Super Lighting Pvtech Achieves Perfect Record at USPTO: Institution of All 10 of 10 Ex Parte Reexamination Petitions Against Patents Asserted by Jiaxing Super Lighting

April 24, 2026

Commentary

Fed. Circ. Ends Anti-Suit Injunction Appeal in BMW Case Fed. Circ. Ends Anti-Suit Injunction Appeal in BMW Case

April 20, 2026

Law360

Media Mention

ITC Bans Infringing Drill Bit Imports After Fed. Circ. Remand ITC Bans Infringing Drill Bit Imports After Fed. Circ. Remand

December 5, 2025

Law360

Press Release

BMW Victory in United States District Court for the Eastern District of Virginia against PTO – In Reexaminations, PTO Director Must State a Ground-By-Ground Basis for a Discretionary EPR Denial BMW Victory in United States District Court for the Eastern District of Virginia against PTO – In Reexaminations, PTO Director Must State a Ground-By-Ground Basis for a Discretionary EPR Denial

April 7, 2025

More

Professional Activities

  • Giles S. Rich American Inn of Court
    (member, 2011-2013)
Admissions and Education

Admissions

  • U.S. Patent and Trademark Office
  • District of Columbia
  • New Jersey
  • Virginia
  • U.S. District Court, D. New Jersey
  • U.S. District Court, E.D. Virginia
  • U.S. Court of Appeals, Sixth Circuit
  • U.S. Court of Appeals, Federal Circuit
  • Supreme Court of the United States

Education

University of Virginia School of Law
J.D., 2008
Princeton University
B.S., Mechanical and Aerospace Engineering, 2003

Clerkships

  • U.S. Court of Appeals, Federal Circuit, Hon. Sharon Prost
  • U.S. District Court, E.D. Virginia, Hon. Liam O'Grady

David's Practices

Diligence, Licensing, and Opinions
Licensing, Pooling, and Other Transactions
Opinions and Counseling
Global IP Enforcement, Litigation, and Trials
Federal Circuit and Supreme Court Appeals
ITC Section 337 Investigations and Trials
Patent Litigation and Trials
Patent Office Invalidation Proceedings
Ex Parte Reexamination (EPR)
PTAB Invalidation Proceedings: IPR and PGR
Prosecution and Portfolio Management
IP Portfolio Management
Patent Drafting and Prosecution

David's Industries

AI, Electronics, and Information Technology
Electrical and Computer Technology
Communications
Financial Services and Business Systems
Consumer Goods and Services
Consumer Products
Life Sciences
Biotechnology
Medical Device and Diagnostics
Pharmaceutical
Transportation and Logistics
Aerospace, Aviation, and Unmanned Aerial Systems (UAS)

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