Fox Rothschild’s Intellectual Property Group Listed in IAM Patent 1000
For the eighth consecutive year, Fox Rothschild’s nationwide Intellectual Property Department has been listed in the IAM Patent 1000. This annual guide, produced by Intellectual Asset Management, focuses exclusively on patent practice and has been established as the “definitive ‘go-to’ resource for those seeking world-class legal patent expertise.”
Comprised of more than 70 IP attorneys, Fox’s Intellectual Property team includes many who hold doctoral degrees in the sciences and engineering, as well as former U.S. Patent and Trademark Office examiners, former university and industry researchers and former in-house attorneys and corporate engineers.
The guide notes Fox as “an excellent firm that covers a broad spectrum of technologies” and a “nimble outfit with a national reach that provides a personalized and comprehensive service to help patrons achieve their business goals.”
In New Jersey, where Fox’s Princeton office serves as the focal point of the firm’s life sciences practice, the following attorneys are listed in the guide:
- Peter J. Butch is recognized for not only having "a great understanding of the scientific intricacies of the technology at hand” but is “one of the best for obtaining intellectual property protection at home and abroad; he is extremely familiar with the workings of the patent department and knows exactly how to respond to relevant office actions.”
- Jianming Jimmy Hao, Ph.D. is noted as "responsive, efficient, hardworking and knowledgeable" and “delivers high-quality products.”
- Wansheng Jerry Liu, Ph.D. is praised for “delivering work on time” and providing “Techfields Pharma with vital strategic counseling in the prosecution of more than 80 patents across the world.”
- Gerard P. Norton Ph.D., the first attorney to serve as Chair of Fox's IP Department, is cited as a "thoughtful and thorough prosecutor" who "achieves meaningful patent protection for clients." The guide also notes Norton and Hao’s representation of the University of Rochester in ongoing patent preparation and prosecution, portfolio management and general IP counseling.
Fox's New York office is home to the following group of recognized patent practitioners:
- Dianna G. El Hioum, immediate past Chair of the firm’s Intellectual Property Department, is spotlighted for her work on prosecution, licensing and opinion work.
- Christopher W. Glynn,Ph.D. is highlighted as a “deft portfolio manager and strategist.”
- Janet M. MacLeod, Ph.D., Chair of Fox’s Intellectual Property Department,is featured for prosecuting patents “worldwide for clientele in pharmaceutical, biotechnology and chemical fields.”
- Pejman F. Sharifi is attributed as “very knowledgeable, responsive and great to work with. He provides regular updates to clients and his work product is always top-notch.”
- Deborah A. Somerville is cited as “always grounded in the details, while also keeping an eye on the big picture of her clients’ goals. She is very thorough, professional and is a pleasure to work with.”
In Pennsylvania, the guide highlights two patent attorneys:
- James M. Singer, Past Chair of Fox’s IP Department, is noted for his ability to “motivate a team and get them pulling in the same direction to execute successful prosecution strategies.”
- Gunjan Agarwal is spotlighted for her ability to “dig deep into the science of the inventions at hand to successfully build and manage the portfolios of US and foreign companies.” The guide also notes Agarwal and Singer for collaborating with colleagues in New Jersey “to dispense expert patent prosecution and strategic counseling to Xerox to expand their high-value technology patent portfolio.”
Peter F. Corless is also featured in the guide for patent work in Massachusetts.
Fox’s IP Department handles a complete range of patent law matters, including domestic and foreign patent prosecution, corporate due diligence, post-grant proceedings, counseling and opinions regarding patent invalidity and noninfringement. In 2022 alone, the team of over 60 registered patent attorneys and agents secured nearly 1,100 patents worldwide.
A description of the selection methodology is available here. No aspect of this advertisement has been approved by the New Jersey Supreme Court.

