Associate
Luke MacDonald, Ph.D. has a diverse intellectual property practice that includes district court patent litigation, patent prosecution, appeals at the U.S. Court of Appeals for the Federal Circuit, and proceedings before the Patent Trial and Appeal Board (PTAB) and the Trademark Trial and Appeal Board (TTAB). Luke represents clients across a range of technologies in the electrical sciences, financial services, communications industry, automotive industry, biomedical field, environmental sector, retail, and more.
Luke has substantial experience in various phases of litigation including motions practice, briefing, managing discovery, depositions, assisting technical experts, petitions for inter partes review (IPRs), appeals, and other strategic phases of litigation. He also develops invalidity and infringement positions for clients seeking to launch new products.
Luke has extensive patent prosecution experience ranging from managing large international patent portfolios to developing patent strategies for early-stage startup companies. He works with teams of attorneys at Finnegan to implement portfolio development strategies. Since joining Finnegan full time during law school, Luke has prosecuted over 200 patent applications. Luke helps clients succeed when dealing with complex issues on subject matter eligibility and crowded fields of prior art.
Luke has a wide range of technical expertise spanning biomedical physics, mathematics, microbiology, computer programming, environmental engineering, and public health. Prior to joining Finnegan, he worked as a faculty scientist at the Johns Hopkins Bloomberg School of Public Health and as the deputy director of the Johns Hopkins Water Institute. Luke developed and oversaw national scale mobile technology-based health monitoring programs in Asia, Africa, and Latin America. At Princeton, Luke's graduate dissertation research focused on biogeochemical reactions in the environment and their influence on contaminant transport. He was awarded numerous competitive research grants. During his time in academia, Luke was an invited speaker at multiple conferences and panels around the United States.
Luke has been recognized on the Capital Pro Bono Honor Roll.
In the Matter of Certain Semiconductor Devices and Products Containing the Same
Achieved a comprehensive victory for respondent Innoscience, a global leader in gallium nitride (GaN) power devices, in a high-profile patent dispute before the U.S. International Trade Commission (ITC). The ITC’s Final Determination confirms that Innoscience avoided all patent claims asserted by Infineon.
337‑TA‑1414, ITC, Judge Moore
Bell Northern Research, LLC v. MediaTek Inc. et al.
337-TA-1367, ITC, Judge Moore
2:23-cv-10783, C.D. Cal., Judges Anelle-Rocha, Eick
IPR2023-01414, PTAB, Judges Abraham, Cass, Hamann
Scramoge Technology Limited v. Volkswagen AG, et al.
2-22-cv-10730, E.D. Mich.
IPR2022-01309, -01354, -01543, -01559, PTAB, Judges Easthom, Kalan, Lee, McNamara, Moore, Wormmeester
FedEx Corporate Services, Inc. v. Roambee Corporation
1:21-cv-00175, D. Del., Judge Connolly
Daedalus Blue LLC v. SZ DJI Technology Co., Ltd. et al.
Successfully represented DJI in a patent litigation involving drone technology and succeeded in getting the entirety of plaintiff’s damages expert’s report excluded under Daubert on the eve of trial, driving a favorable resolution.
6:20-cv-00073, W.D. Tex., Judge Albright
Shure Incorporated et al. v. ClearOne, Inc.
Represented plaintiff Shure Incorporated and Shure Acquisition Holdings, Inc. involving utility and design patents and false claims related to ceiling microphone array products. The design patent trial concluded in November 2021 and the case later settled favorably.
1:19-cv-01343, D. Del., Judge Andrews
Federal Circuit IP Blog
Motion to Dismiss Vacated for Implicit Claim Construction Against Non-Movant Motion to Dismiss Vacated for Implicit Claim Construction Against Non-Movant
March 2, 2026
Federal Circuit IP Blog
Federal Circuit Upholds Director Deinstitution Despite Sotera Stipulation Federal Circuit Upholds Director Deinstitution Despite Sotera Stipulation
March 2, 2026
Federal Circuit IP Blog
Federal Circuit Reverses Findings of Willful Infringement, Claim Construction, and Infringement by Doctrine of Equivalents Federal Circuit Reverses Findings of Willful Infringement, Claim Construction, and Infringement by Doctrine of Equivalents
December 2, 2025
Federal Circuit IP Blog
Federal Circuit Clarifies Prosecution History Disclaimer in Design Patents and Reverses Finding of Design Patent and Trademark Infringement Federal Circuit Clarifies Prosecution History Disclaimer in Design Patents and Reverses Finding of Design Patent and Trademark Infringement
October 27, 2025
Federal Circuit IP Blog
Federal Circuit Faults Defendant for Gamesmanship for Presenting Untimely Noninfringement Theory Based on Lack of Data it Blocked in Discovery Federal Circuit Faults Defendant for Gamesmanship for Presenting Untimely Noninfringement Theory Based on Lack of Data it Blocked in Discovery
October 22, 2025
Press Release
Finnegan Secures Decisive ITC Victory for Innoscience in Final Determination Finnegan Secures Decisive ITC Victory for Innoscience in Final Determination
May 11, 2026
Commentary
CBP Clears Redesigned Innoscience Chips After ITC Case CBP Clears Redesigned Innoscience Chips After ITC Case
March 12, 2026
Law360Press Release
Finnegan Secures Major ITC Victory in Initial Determination for Innoscience Finnegan Secures Major ITC Victory in Initial Determination for Innoscience
January 29, 2026
Press Release
Finnegan Scores Major PTAB Victory for Innoscience that Rocks the Gallium Nitride (GaN) Power Semiconductor Industry Finnegan Scores Major PTAB Victory for Innoscience that Rocks the Gallium Nitride (GaN) Power Semiconductor Industry
March 24, 2025
Award/Ranking
60 Finnegan Attorneys Named to 2023 Capital Pro Bono Honor Roll 60 Finnegan Attorneys Named to 2023 Capital Pro Bono Honor Roll
May 15, 2024
Announcement
Finnegan Announces 2021 Mentors of the Year Finnegan Announces 2021 Mentors of the Year
December 28, 2021
Due to international data regulations, we’ve updated our privacy policy. Click here to read our privacy policy in full.