Wolf Greenfield Ranked Among Top 10 Law Firms for Patent Prosecution and Post-Grant Proceedings in 2025
Wolf Greenfield has once again been recognized among the top 10 US law firms in The Legal 500 United States for its work in “Patents: prosecution (including reexamination and post-grant proceedings).” This ranking underscores the firm’s national reputation for excellence in patent law, particularly in the life sciences sector and in complex post-grant proceedings before the Patent Trial and Appeal Board (PTAB).
What Legal 500 Says
Legal 500 recognized Wolf Greenfield for its “strong reputation,” “life sciences expertise,” and ability to guide clients through “complex PGRs and IPRs before the PTAB,” as well as its counsel on “due diligence aspects of IP and all aspects of the establishment of patents.”
What Clients Are Saying
Client feedback highlighted:
- “There’s no one I’d rather turn to than Wolf Greenfield for anything related to patents.”
- “The team at Wolf Greenfield is incredibly talented with regards to examining, preparing, writing, and defending patents, but more importantly, they make what can be a very complicated process as simple as possible.”
Individually Ranked Attorneys
In addition to the firm’s recognition, four attorneys were ranked for their work:
- Heather DiPietrantonio, Shareholder, Biotechnology Practice – Next Generation Partner
- Rich Giunta, Shareholder, Post-Grant Proceedings Practice – Leading Lawyer
- Oona Johnstone, Shareholder, Biotechnology Practice – Next Generation Partner
- Patrick Waller, Co-chair, Biotechnology Practice – Leading Lawyer
About Legal 500
Legal 500 assesses the strengths of law firms in over 100 countries worldwide. The rankings highlight the practice area teams who are providing the most cutting-edge and innovative advice to corporate counsel. The research is based on feedback from over 300,000 clients, submissions from law firms, and interviews with leading private practice lawyers.