James Breen, a senior associate in Goodwin’s Intellectual Property Litigation practice, focuses his practice on representing clients in complex intellectual property litigation across a variety of industries, including life sciences, technology, and consumer products. Mr. Breen’s experience includes advising clients in patent and post-grant invalidity proceedings, trade secret, trademark, copyright, and unfair competition matters. Mr. Breen also has extensive experience in disputes relating to intellectual property licensing and related commercial agreements.





Mr. Breen’s experience includes pre-suit investigations, discovery, motion practice, motions for preliminary injunction, claim construction, pretrial proceedings, trial, and applications for temporary restraining orders.  Some of Mr. Breen’s recent engagements include:

  • Certain Pre-Filled Syringes for Intravitreal Injection and Components Thereof, 337-TA-1207: Represented global healthcare company in ITC investigation and inter partes review proceedings.
  • Novartis Pharma AG et al. v. Regeneron Pharmaceuticals, Inc. (N.D.N.Y.): Representing client in litigation involving pre-filled syringes.
  • Genentech, Inc. et al. v. Celltrion, Inc. et al., C.A. Nos. 18-95-CFC, 18-1025-CFC (D. Del.). Represented Celltrion and Teva in BPCIA dispute regarding proposed biosimilar to HERCEPTIN®.
  • Represented The Gillette Company in litigation filed against Dollar Shave Club, Inc., in which Gillette asserted infringement of a patent directed to razor blade coatings. The matter settled favorably before trial.
  • Represented gaming company in trademark, copyright, and unfair competition litigation concerning a copycat video game.

Prior to joining Goodwin, Mr. Breen worked as a technical consultant in the patent prosecution group of an intellectual property law firm. During this time he assisted in the drafting and prosecution of U.S. and international patent applications, as well as in patent validity, freedom-to-operate, and due diligence investigations across a variety of technologies, including energy and wastewater treatment.

Mr. Breen also maintains an active pro bono practice. He has worked with organizations, such as Her Justice, to provide representation and advocacy for clients in custody and visitation proceedings.

Professional Activities

Mr. Breen is a member of the New York Intellectual Property Law Association (NYIPLA).

While attending Manhattan College, Mr. Breen was a member of the Omega Chi Epsilon, Tau Beta Pi, and Epsilon Sigma Pi Honor Societies.

Professional Experience

Mr. Breen is a co-founder of Save Your City Clothing, a nonprofit organization committed to improving the education and well-being of school children in New York City.


Mr. Breen is a recipient of the Archibald R. Murray Public Service Award.

In The News









J.D., Intellectual Property, 2016
Fordham University
M.S., Chemical Engineering, 2013
Manhattan College
B.S., Chemical Engineering, 2012
Manhattan College
(magna cum laude)



New York
U.S. Patent and Trademark Office (USPTO)


U.S. District Court for the Southern District of New York
Profile Image
Get In Touch
Our clients rely on us for world-class advisory services, counsel on complex transactional work and high-stakes litigation. Specializing in matters involving the financial, life sciences, private equity, real estate, and technology industries, we use a collaborative, cross-disciplinary approach to resolve our clients’ most challenging issues. To find out more, please contact us.


Nos équipes interviennent aux côtés de nos clients, industriels, fonds d’investissement, startups, institutions financières et dirigeants, dans le cadre de transactions et de contentieux complexes, et apportent des conseils de tout premier plan dans les secteurs financiers, des Sciences de la Vie, du Private Equity, de l’immobilier et des technologies. Nous traitons les dossiers juridiques de manière intègre, ingénieuse, souple et audacieuse pour répondre efficacement aux enjeux propres à chacun de nos clients, quels que soient la taille de l’opération et le secteur d’activité. Pour en savoir plus, contactez-nous.

Unsere Kunden verlassen sich auf unsere erstklassige Beratung, vor allem im Hinblick auf komplexe Transaktionen und High-Stakes-Prozesse. Spezialisiert auf Angelegenheiten der Finanz-, Life-Sciences-, Private-Equity-, Immobilien-und Technologie-Branchen, verwenden wir einen kooperativen und interdisziplinären Ansatz, um Fragen unserer Kunden auch in extremen Spezialsituationen einer Lösung zuzuführen. Sie wollen mehr erfahren? Kontaktieren Sie uns gerne.

Search Other Lawyers
Recherche par Pratique