Sydney R. Kestle
Partner
Sydney Kestle focuses on several areas of patent law, including pre-litigation due diligence, client counseling, litigation in U.S. district courts, proceedings before the Patent Trial and Appeal Board (PTAB) of the U.S. Patent and Trademark Office (USPTO), and appeals before the U.S. Court of Appeals for the Federal Circuit, where she clerked. Her patent practice covers several technology sectors in the mechanical and electrical arts, including industrial manufacturing, medical devices, and wireless communications and related consumer products. Sydney currently serves as co-lead of Finnegan FORWARD.
Experience
Teva Pharmaceuticals International GmbH v. Eli Lilly and Company
Represented Eli Lilly in patent litigations involving antibody therapies.
1:18-cv-12029, D. Mass., Judge Burroughs
AbbVie Inc. et al v. Alvotech hf.
1:21-cv-02258, 1:21-cv-02899, N.D. Ill., Judge Lee
Cambria Company LLC v. Cosentino SA
6:20-cv-00894, -00895, -00896, -00897, W.D. Tex., Judge Albright
6:20-cv-01080, W.D. Tex., Judge Albright
IPR2021-00214, -00215, -00216; PGR2021-00010, -00090, PTAB, Judges Kalan, Ross, Kaiser
Universal Electronics, Inc. v. Caavo Inc.
106,113; 106,114, PTAB, Judges Lane, Moore, Katz
Zimmer Surgical, Inc. et al. v. Stryker Corporation et al.
1:16-cv-00679, D. Del., Judges Andrews, Thynge
NetApp, Inc./HPE et al. v. KOM Software Inc.
IPR2019-00591, -00592, -00594, -00598, -00601, -00603, -00604, -00606, -00607, -00608, PTAB, Judges McGraw, Galligan, Dougal, Fishman
20-2345, -2346; 21-1181, -1075 -1005, Fed. Cir., Judges Prost, Chen, Taranto
Insights
Articles
Infringing Here, There or Everywhere: Extraterritorial Damages and Infringement
May 15, 2024
Westlaw Today
Federal Circuit IP Blog
Podcast Series: Last Month at the Federal Circuit - August 2023
September 7, 2023
Webinar
PTAB Discretionary Denials: Preparing and Responding to Petitions, Application of the Fintiv Factors
April 25, 2023
Webinar
News
Award/Ranking
August 21, 2025
Best LawyersAward/Ranking
Women in Business Law Americas Awards 2024: Three Finnegan Attorneys Shortlisted
April 7, 2024
Women in Business LawProfessional Activities
- Society of Women Engineers
(2007-2011) - Giles S. Rich American Inn of Court
(membership co-chair, 2015-2019) - American Intellectual Property Law Association
- Bar Association of Montgomery County
(Community Outreach Committee, board member)
- Federal Circuit Bar Association
- Order of the Coif
Admissions
- U.S. Patent and Trademark Office
- District of Columbia
- Maryland
- U.S. Court of Appeals, Federal Circuit
- U.S. Court of Appeals, Veterans Claims
Education
- American University, Washington College of Law
- J.D., magna cum laude, 2014
- University of Pennsylvania
- B.S.E., Bioengineering, cum laude, 2011
Clerkships
- U.S. Court of Appeals, Federal Circuit, Hon. Alan Lourie
Sydney's Practices
- Global IP Enforcement, Litigation, and Trials
- Federal Circuit and Supreme Court Appeals
- Patent Litigation and Trials
- Patent Office Invalidation Proceedings
- PTAB Invalidation Proceedings: IPR and PGR
- Prosecution and Portfolio Management
- Due Diligence
- Opinions and Counseling
Sydney's Industries
- AI, Electronics, and Information Technology
- Electrical and Computer Technology
- Nanotechnology
- Robotics
- Chemicals, Industrials, and Materials
- Manufacturing
- Consumer Goods and Services
- Consumer Products
- Life Sciences
- Biotechnology
- Medical Device and Diagnostics