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  1. Professionals

Joseph C. Masullo

he/him

Of Counsel

Washington, DC

+1 202-282-5897

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  • Overview
  • Experience
  • Credentials
  • Insights & News

JC focuses his practice on patent litigation in federal district courts as well as in Section 337 proceedings before the U.S. International Trade Commission. He uses his technical background to provide technical analysis on patent litigations, and he also works closely with technical expert witnesses to develop infringement and invalidity positions.

JC is an experienced patent litigator with significant trial experience.  He has experience presenting expert witnesses and cross-examining witnesses related to complex patent issues such as source code.  He has also argued at numerous Markman hearings.

He works closely with clients, their engineers, and experts to develop concrete infringement and invalidity strategies.  He has worked on cases from their initial stages through trial.

JC has worked for a variety of companies on complex litigation matters in the automotive, cable, social media, telecommunications, semiconductor, and medical device industries. JC has also worked on matters before the PTO, including challenges and defenses to patent validity based on inter partes review petitions.

JC has extensive experience in patent litigations involving source code, GDS files, computer systems and semiconductor devices. 

Additionally, JC has spoken at conferences and law schools regarding patent litigation and industry trends.

Key Matters

JC’s representative litigation matters include:

  • Represented a major medical device company in an ITC investigation against a competitor company. The case settled favorably.
  • Represented a major networking company in District Court against claims of patent infringement and convinced plaintiff to voluntarily dismiss the matter.
  • Represented a major semiconductor company in an ITC investigation brought by a competitor which resulted in the client successfully invalidating all asserted claims at both the ITC as well as institution of the same claims at the PTAB.
  • Represented a major telecommunications company in an ITC investigation related to Wi-Fi calling technology. The case settled favorably.
  • Successfully defended a major cable company in an ITC investigation related to digital video records and advanced buffering technology. The asserted patent was dropped before trial.
  • Successfully defended major internet content provider against claims of patent infringement related to digital voice messaging technology.
  • Representation of Taiwanese semiconductor company in complaints and counter-complaints against a large semiconductor company in multiple complex patent litigations at the ITC. The cases settled favorably.
  • Successfully represented a major telecommunications company against claims of patent infringement related to authentication and authorization systems.
  • Successfully represented a major phone manufacturer against claims of patent infringement related to power management, common bus, and mappable I/O technology.
  • Successfully represented a major telecommunications company against claims of patent infringement related to electronic access control devices utilizing integrated circuits.
  • Successfully represented a major phone manufacturer against claims of patent infringement related to Code Division Multiple Access (CDMA) technology.
  • Successfully represented a major phone manufacturer against claims of patent infringement related to multi-rate speech codecs.
Recent Experience
ITC ALJ Issues Win for AMD
Winston Secures Favorable Settlement for Virtualization Company in 10-Patent Case

  • Recognized by Best Lawyers: Ones to Watch® in America; Antitrust Law, Communications Law, and Litigation - Intellectual Property (2024)

JC has also handled a variety of pro bono matters including prosecuting a trademark application, working on a landlord/tenant case, a civil rights complaint, a criminal appeal, and a request to obtain asylum.

JC is a member of two Winston & Strawn affinity groups: Winston PRIDE and the firm’s Latina/o Lawyer Alliance.

Capabilities

Antitrust/Competition
Patent Litigation
IP Licensing & Due Diligence
International Arbitration
ITC – Section 337
Public Companies
Medical Devices
Technology, Media & Telecommunications

Key Matters

JC’s representative litigation matters include:

  • Represented a major medical device company in an ITC investigation against a competitor company. The case settled favorably.
  • Represented a major networking company in District Court against claims of patent infringement and convinced plaintiff to voluntarily dismiss the matter.
  • Represented a major semiconductor company in an ITC investigation brought by a competitor which resulted in the client successfully invalidating all asserted claims at both the ITC as well as institution of the same claims at the PTAB.
  • Represented a major telecommunications company in an ITC investigation related to Wi-Fi calling technology. The case settled favorably.
  • Successfully defended a major cable company in an ITC investigation related to digital video records and advanced buffering technology. The asserted patent was dropped before trial.
  • Successfully defended major internet content provider against claims of patent infringement related to digital voice messaging technology.
  • Representation of Taiwanese semiconductor company in complaints and counter-complaints against a large semiconductor company in multiple complex patent litigations at the ITC. The cases settled favorably.
  • Successfully represented a major telecommunications company against claims of patent infringement related to authentication and authorization systems.
  • Successfully represented a major phone manufacturer against claims of patent infringement related to power management, common bus, and mappable I/O technology.
  • Successfully represented a major telecommunications company against claims of patent infringement related to electronic access control devices utilizing integrated circuits.
  • Successfully represented a major phone manufacturer against claims of patent infringement related to Code Division Multiple Access (CDMA) technology.
  • Successfully represented a major phone manufacturer against claims of patent infringement related to multi-rate speech codecs.
Recent Experience
ITC ALJ Issues Win for AMD
Winston Secures Favorable Settlement for Virtualization Company in 10-Patent Case

Credentials

Education

JC received his B.A. in economics from New York University in 2003 and a M.S. in computer science in 2009 from the George Washington University School of Engineering and Applied Science. He received his J.D. from George Washington University Law School in 2009. During law school, JC interned at the United States Department of Justice, Civil Rights Division, and the New York City Law Department Summer Honors Program. 

    Admissions
    • District of Columbia
    • Connecticut

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    Capabilities

    Antitrust/Competition
    Patent Litigation
    IP Licensing & Due Diligence
    International Arbitration
    ITC – Section 337
    Public Companies
    Medical Devices
    Technology, Media & Telecommunications
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