Libbie A. DiMarco

Overview

Libbie DiMarco is a leading intellectual property litigator and head of the firm's ITC Practice. Libbie serves as lead counsel in complex and high-stakes patent disputes before the International Trade Commission and Federal District Courts nationwide. She is recognized for her commanding courtroom presence, strategic acumen, and unwavering commitment to her clients.

As a trusted lead counsel, Libbie guides clients through every phase of litigation, from investigation and pre-suit negotiations through trial and appeal, with a focus on achieving decisive results. Libbie's practice spans a broad range of technologies, including data storage devices and systems, mobile and other electronic devices, chipsets, high-speed electrical connectors, printer cartridges, medical devices, and chemical products and processes.

Libbie also handles intellectual property enforcement proceedings before the US Customs and Border Protection and post-grant proceedings before the Patent Trial and Appeal Board (PTAB).

A thought leader on all matters related to the ITC, Libbie often speaks and writes about ITC trends and cases. She is ranked among the top 1% of best performing litigators at the ITC.

Prior to joining Wolf Greenfield, Libbie clerked for the New Hampshire Supreme Court.

Libbie co-chairs the firm’s Washington, DC office.

Experience

International Trade Commission Experience 

• Representing Infineon before the International Trade Commission in investigation involving semiconductor devices and products, 337-TA-1414.  
• Representing Lenovo before the International Trade Commission in investigation involving mobile phone, tablets, and laptop devices, 337-TA-1376. 
• Represented Google before the International Trade Commission in investigation involving location sharing software and mobile devices. Certain Location-Sharing Systems, Related Software, Components Thereof, and Products Containing Same,  337-TA-1347. 
• Represented Google before the International Trade Commission in investigation involving voice controllable audio player devices and networked audio player devices. Certain audio players and components thereof, 337-TA-1329, -1330. 
• Represented Google before the International Trade Commission in investigation involving power semiconductors, and mobile devices and computers. Certain Power Semiconductors, and Mobile Devices and Computers Containing Same, 337-TA-1308. 
• Represented Amphenol Corporation as day-to-day case lead in complex multiple patent investigation against Luxshare Precision related to electrical connectors. Certain Electrical Connectors, Cages, Components, and Products Containing the Same, 337-TA-1241. 
• Represented Aster Graphics in patent investigation related to printer cartridges. Certain Toner Cartridges, Components Thereof, and Systems Containing Same, 337-TA-1194. 
• Represented Sony in enforcement proceedings before the International Trade Commission and in related 177 Rulings Request proceedings before Customs and Border Control. 
• Represented Sony before the United States International Trade Commission in multiple patent litigations involving magnetic tape cartridges. Certain Magnetic Data Storage Tapes and Cartridges Containing the Same, 337-TA-1012, 1036, -1058, -1076. 
• Represented Sony before the United States International Trade Commission in investigation involving digital phones and media players. Certain Portable Devices and Components Thereof, 337-TA-994. 
• Represented BTG International before the United States International Trade Commission in investigation involving antibody-based snake antivenom compositions. Certain Antivenom Compositions and Products Containing the Same, 337-TA-903. 
• Represented Sony before the United States International Trade Commission in patent litigation involving technologies ranging from graphics and computer processing to liquid crystal displays. Point-to-Point Network Communication Devices and Products Containing Same, 337-TA-836. 

District Court Experience 

• Metarail, Inc. v. Google LLC 1-23-cv-01116 (DDE) – Representing Google before the District of Delaware in four patent litigations concerning deep-linking systems, methods and computer program product for online advertisement and E-commerce. 
• Pearl Musical Instrument Company Co. Ltd v. Hoshino Gakki Co., Ltd. et al 2-23-cv-03220 (EDPA)" – Representing Hoshino Gakki Co., Ltd. Before the Eastern District of Pennsylvania in patent litigations concerning musical instrument carriers, tilters, cymbal stands, and related methods.  
• Representing Google before the United States District Court for the District of Massachusetts in a two separate patent litigations concerning low-­precision, high-dynamic range computing. 
• Represented Google/Best Buy before the Western District of Texas in patent litigation concerning tablet display covers with keyboards, leading to favorable settlement and dismissal. 
• Represented Google before the District of Delaware in patent litigation concerning geospatial monitoring in mobile devices, leading to voluntary dismissal by plaintiff before any litigation took place. 
• Represented ACTIV Financial Systems before the Northern District of Illinois in complex 16-patent litigation relating to financial market data systems and field programmable gate arrays, leading to favorable settlement and dismissal. 
• Represented EMC before the District of Delaware in a five patent litigation concerning data protection technologies, leading to a jury verdict in EMC’s favor. 
• Represented iWalk, Inc. (now BiOM) before the United States District Court for the District of Massachusetts in offensive and defensive patent litigations against a competitor concerning bionic ankle and foot prostheses. Libbie’s responsibilities included drafting Markman briefs. 

PTAB Experience 

• Roku, Inc. v. VideoLabs, Inc. (IPR2024-01023, IPR2024-01024, IPR2024-01025,  IPR2024-01026) – Representing patent owner Roku, Inc. in IPRs related to methods and apparatuses for secondary conditional access server. 
• Valve Corporation v. Immersion Corporation (IPR2024-00714) – Representing petitioner Valve Corporation in a challenge to a patent directed position control of a user input element associated with a haptic output device. 
• Google LLC v. Smartwatch Mobile Concepts LLC (IPR2024-00852) – Representing patent owner Google LLC in IPR related to systems, methods, and apparatuses for enabling wearable device user access to secured electronics systems. 
• Represented Amphenol Corporation in defending inter partes review proceeding concerning electrical connector technology. 
• Represented ACTIV Financial Systems in inter partes review proceeding concerning financial market data systems. 

Activities

• Chair of the AIPLA ITC Committee
• ITC Trial Lawyer’s Association

Recognition

• Ranked among the top 1% of best performing litigators at the ITC—out of  3,967 attorneys—representing respondents or complainants in Patexia’s ITC Intelligence Report (2026) 
• Ranked among the top 5% of most active patent litigators—out of 3,967 attorneys—representing respondents or complainants in Patexia’s ITC Intelligence Report (2026) 
• Recognized in the IAM Patent 1000: The World’s Leading Patent Professionals (2025)
• Named to World IP Review’s WIPR Leaders List (2025)
• Ranked among the top 5% of most active patent litigators—out of 17,052 attorneys—representing defendants in Patexia’s Patent Litigation Intelligence Report (2024) 
• Repeatedly recognized on the Best Lawyers: Ones to Watch list by The Best Lawyers in America®
• Repeatedly named to the list of Massachusetts Rising Stars by Super Lawyers
• Recognized by Massachusetts Lawyers Weekly as an “Up & Coming Lawyer” (2021)

Interests

In Libbie's “spare” time, she is a trumpet player, an avid concert-goer, and a wanderlust traveler.