Li Feng, Ph.D.
Partner
Li Feng, Ph.D., practices all aspects of patent law, including patent litigation before U.S. district courts, post-grant proceedings before the Patent Trial and Appeal Board (PTAB) of the U.S. Patent and Trademark Office (USPTO), and global patent procurement. She routinely handles matters related to a wide range of technologies, including small molecule and biologic pharmaceuticals, diagnostics, biotechnology, chemicals, agricultural sciences, renewable energy, nanotechnology, cosmetics, and medical devices. Years of doctoral and industry research give Li a practical understanding of the innovation process.
Experience
Represented the patent owner in an inter partes review before the PTAB and obtained a favorable ruling.
IPR2020-00503, PTAB, Judges Abraham, Guest, Heaney
Represented Biogen in a Hatch-Waxman litigation involving twenty-eight companies seeking FDA approval to market generic versions of Tecfidera®.
1:17-cv-00829, D. Del., Judge Noreika
1:17-cv-00116, N.D.W. Va., Judge Keeley
Represented Biogen in an inter partes review before the PTAB and obtained a favorable ruling for a patent covering Tecfidera®.
IPR2018-01403, PTAB, Judges Chagnon, Harlow, Snedden
Represented Biogen in an inter partes review before the PTAB and obtained a favorable ruling for a patent covering Tecfidera®.
IPR2015-01086, -01136, -01993, PTAB, Judges Gardener-Lane, Katz, Schafer
Represented agro-chemical companies at the International Trade Commission and obtained a favorable ruling.
337-TA-914, ITC, Judge Lord
Represented Biogen in an interference proceeding before the PTAB and obtained a favorable ruling for a patent covering Tecfidera®.
106,023, PTAB, Judges Gardner-Lane, Katz, Schafer
Represented Sequenom, Inc. et al in three interference cases before the PTAB of the USPTO and obtained favorable rulings relating to Dr. Dennis Lo’s inventions on noninvasive prenatal diagnosis.
105,920; 105,923; 105,924, PTAB, Judges Gardner-Lane, Katz, Moore
Represented LG (Lee) in a patent interference provoked by competitor Whirlpool (Voglewede) attempting to challenge LG refrigerator patents; judgment entered against Whirlpool and in favor of client LG.
Int. No. 105711, BPAI, Judge Lee
Insights
Webinar
Building a Strong ADC Patent Portfolio – From Prosecution and Litigation Perspectives
May 15, 2024
Webinar
Conference
3rd Annual Passport to Proficiency on the Essentials of Hatch-Waxman and BPCIA
October 10-26, 2023
Virtual
News
Award/Ranking
Finnegan Wins Best Diversity Initiative at The American Lawyer 2024 Industry Awards
November 14, 2024
Award/Ranking
Finnegan Named a Finalist for The American Lawyer Industry Awards
September 3, 2024
The American LawyerCommentary
China's Patent Linkage System Is Finally Up and Running
July 15, 2021
Intellectual Asset Management (IAM)Press Release
Finnegan Ranks in the Top 15 as a 2017 Working Mother "Best Law Firm for Women"
July 25, 2017
Working MotherProfessional Activities
- American Intellectual Property Law Association (AIPLA)
- International Association for the Protection of Intellectual Property (AIPPI)
(member of Standing Committee on Pharma and Biotechnology, 2014-present) - Sino-American Pharmaceutical Professionals Association (SAPA)
(executive council, 2021-present)
Admissions
- U.S. Patent and Trademark Office
- California
- District of Columbia
- U.S. Court of Appeals, Federal Circuit
Education
University of Utah
J.D., with high honors, 2008
Ph.D., Medicinal Chemistry, 1999
Peking University
M.S., Physical Chemistry, 1993
B.S., Chemistry, 1990
Languages
- Chinese (Mandarin)
Li's Practices
- Appeals, Issues, and Legal Strategy
- Appeals from the PTAB
- Federal Circuit and Supreme Court Appeals
- Diligence, Licensing, and Opinions
- Due Diligence
- Freedom to Operate Opinions
- Opinions and Counseling
- Global IP Enforcement, Litigation, and Trials
- Branded Hatch-Waxman (ANDA) Litigation and Trials
- Federal Circuit and Supreme Court Appeals
- ITC Section 337 Investigations and Trials
- Patent Litigation and Trials
- Patent Office Invalidation Proceedings
- Derivations
- Ex Parte Reexamination (EPR)
- Interferences
- PTAB Invalidation Proceedings: IPR and PGR
- Prosecution and Portfolio Management
- Appeals to the PTAB
- Ex Parte Reexamination (EPR)
- IP Portfolio Management
- Patent Drafting and Prosecution
- Patent Reissues
Li's Industries
- AI, Electronics, and Information Technology
- Nanotechnology
- Chemicals, Industrials, and Materials
- Chemical
- Energy
- Clean Energy and Renewables
- Oil and Gas
- Life Sciences
- Biologics
- Biotechnology
- Medical Device and Diagnostics
- Pharmaceutical