Cara E. Regan
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  • 901 New York Avenue, NW
  • Washington, DC 20001-4413

Cara E. Regan

Partner

  • 901 New York Avenue, NW
  • Washington, DC 20001-4413

Cara Regan works on patent and trade secret litigation at every stage, from the strategic decision to file a proceeding through appeal. Her experience includes district court and International Trade Commission (ITC) actions; post-grant challenges at the Patent Trial and Appeal Board (PTAB); and appeals at the U.S. Court of Appeals for the Federal Circuit, where she clerked.

Cara has been involved in district court proceedings, ITC investigations, contentious proceedings before the U.S. Patent and Trademark Office (USPTO), and appeals. She has experience with pre-suit due diligence, discovery, depositions, claim construction, summary judgment motions, Daubert motions, and post-trial briefing, as well as with managing related PTAB proceedings and pursuing appeals. She also assists clients in evaluating infringement risks and negotiating license agreements. Her technical expertise encompasses a wide range of technologies, including medical devices, software, mobile phones, laptops, automobiles, and consumer products.

Cara maintains a pro bono practice assisting with veteran's affairs, for which she has been recognized on the Capital Pro Bono Honor Roll.

Et Cetera

  • Serves as an adjunct professor at George Mason University's Antonin Scalia Law School, 2020-present.
  • Served as a law clerk to the Honorable Kara F. Stoll of the U.S. Court of Appeals for the Federal Circuit, 2018-2019.
  • Served as an intern to the Honorable Magistrate Judge James G. Welsh of the U.S. District Court for the W.D. Virginia, 2013-2014.
  • Served as lead articles editor of the Washington and Lee Law Review, 2013-2014.

Experience

Promptu Systems Corporation v. Comcast Corporation

Obtained a $240 million jury verdict for client Promptu in a patent infringement lawsuit against Comcast. The jury found that Comcast willfully infringed Promptu’s patents covering voice recognition technology for TV.

2:16-cv-06516, E.D. Pa., Judge Sanchez
22-1939, Fed. Cir., Judges Prost, Moore, Taranto

NorthStar Systems LLC v. BMW et al.

Secured a royalty-free covenant not to sue from NorthStar for its present and future patent portfolio, which includes patents related to displaying navigation information on electronic maps, mobile devices selectively reporting GPS position information to others, and route-based communication planning architecture and wireless communication. This result was achieved after filing a declaratory judgement as well as IPRs on all claims of all asserted patents, leading to favorable institution decisions.

2:22-cv-00486, E.D. Tex., Judge Gilstrap
6:23-cv-00456, W.D. Tex., Judge Albright
IPR2023-00890, -00934, -01017,-01049, -01190, -01191, PTAB, Judges Droesch, Flax, Petravick, Wood

Certain Semiconductor Devices, Mobile Devices Containing the Same, and Components Thereof; Daedalus Prime LLC v. Taiwan Semiconductor Manufacturing Company et al.

Finnegan represented Taiwan Semiconductor Manufacturing Company et al. in patent litigation involving semiconductor devices. The case settled.

337-TA-1336, ITC, Judge Bhattacharyya
2:22-cv-00352, E.D. Tex., Judge Gilstrap

In the Matter of Certain Power Inverters and Converters, Vehicles Containing the Same, and Components Thereof

BMW of North America, LLC and Bayerische Motoren Werke AG (collectively, “BMW”) earned a final determination rebuffing an International Trade Commission (ITC) complaint by Arigna Technology Limited (“Arigna”) aiming to ban the importation and sale of certain of BMW’s innovative mild-hybrid, hybrid, and all-electric SUVs and other vehicles.

337-TA-1267, ITC, Judge Bhattacharyya

United States Automobile Association v. Truist Bank

Represented Truist Bank in a patent litigation in the Eastern District of Texas against USAA, who asserted five patents directed to mobile deposit technologies. After asserting counterclaims on six patents and filing IPR petitions for each of USAA’s asserted patents, Finnegan’s strategy led to a favorable dismissal.  

2:22-cv-00291, E.D. Tex., Judge Gilstrap
IPR2022-01593, IPR2023-00143, -00144, -00183, -00184, -00829, PTAB, Judges Dirba, Droesch, McMillin, White, Zecher

Certain Capacitive Touch-Controlled Mobile Devices, Computer, and Components Thereof

Represented LG Electronics in a patent infringement action against an non-practicing entity (NPE) seeking to exclude LG’s smart products with touch panels from the United States. The parties settled shortly before trial.

337-TA-1193, ITC, Judge Elliot

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Insights

Conference

LESI Annual Conference 2026 LESI Annual Conference 2026

April 26-29, 2026

Dublin

Articles

Assignment of “Continuations” Found Not to Include “Continuations-In-Part”

Assignment of “Continuations” Found Not to Include “Continuations-In-Part” Assignment of “Continuations” Found Not to Include “Continuations-In-Part”

March 5, 2026

LES Insights

Articles

SEP Licensing In Europe: Recent Developments

SEP Licensing In Europe: Recent Developments SEP Licensing In Europe: Recent Developments

March 5, 2026

LES Insights

Articles

Case Summary: When Licensing Undermines Standing

Case Summary: When Licensing Undermines Standing Case Summary: When Licensing Undermines Standing

March 25, 2025

LES Insights

Articles

Drafting License Agreements – Best Practices for Definitions

Drafting License Agreements – Best Practices for Definitions Drafting License Agreements – Best Practices for Definitions

February 27, 2025

Articles

2024: A Year of Trade Secret Cases in Review

2024: A Year of Trade Secret Cases in Review 2024: A Year of Trade Secret Cases in Review

January 13, 2025

LES Insights
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News

Commentary

Finnegan Team Secures $240M Jury Verdict After PTAB Success Finnegan Team Secures $240M Jury Verdict After PTAB Success

February 3, 2026

Managing Intellectual Property

Commentary

How We Won: Promptu Counsel on Its $240M Victory Against Comcast How We Won: Promptu Counsel on Its $240M Victory Against Comcast

February 2, 2026

World Intellectual Property Review

Media Mention

Law360's Legal Lions of The Week - Promptu Law360's Legal Lions of The Week - Promptu

January 30, 2026

Law360

Media Mention

Litigator of the Week Runners-Up and Shout-Outs: Promptu Litigator of the Week Runners-Up and Shout-Outs: Promptu

January 30, 2026

The AmLaw Litigation Daily

Media Mention

Comcast Hit With $240M Verdict in Voice Recognition IP Trial Comcast Hit With $240M Verdict in Voice Recognition IP Trial

January 27, 2026

Law360

Press Release

Finnegan Secures $240 Million Jury Verdict for Promptu in Patent Case Against Comcast Finnegan Secures $240 Million Jury Verdict for Promptu in Patent Case Against Comcast

January 26, 2026

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Professional Activities

  • American Intellectual Property Law Association (AIPLA)
  • Order of the Coif
  • PTAB Bar Association
Admissions and Education

Admissions

  • U.S. Patent and Trademark Office
  • District of Columbia
  • Virginia
  • U.S. Court of Appeals, Federal Circuit
  • U.S. Court of Appeals, Veterans Claims

Education

Washington and Lee University School of Law
J.D., summa cum laude, 2014
Washington and Lee University
B.S., Physics-Engineering, cum laude, 2011
Washington and Lee University
B.A., History, cum laude, 2011

Clerkships

  • U.S. Court of Appeals, Federal Circuit, Hon. Kara Stoll

Cara's Practices

Global IP Enforcement, Litigation, and Trials
Federal Circuit and Supreme Court Appeals
ITC Section 337 Investigations and Trials
Patent Litigation and Trials
Trade Secrets
Patent Office Invalidation Proceedings
PTAB Invalidation Proceedings: IPR and PGR
Prosecution and Portfolio Management
Due Diligence
Licensing, Pooling, and Other Transactions
Opinions and Counseling
Trade Secrets

Cara's Industries

AI, Electronics, and Information Technology
Electrical and Computer Technology
Chemicals, Industrials, and Materials
Manufacturing
Consumer Goods and Services
Consumer Products
Life Sciences
Medical Device and Diagnostics
Transportation and Logistics
Aerospace, Aviation, and Unmanned Aerial Systems (UAS)
Automotive and Smart Mobility Tech

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