Counsel registry
Arnold & Porter Kaye Scholer
20 case appearances — 7 as plaintiff counsel · 13 as defendant counsel.
Firm overview
Arnold & Porter Kaye Scholer is a multinational BigLaw firm with over 1,000 lawyers operating out of 16 offices worldwide, including major hubs in Washington, D.C. (its headquarters), New York, Chicago, Los Angeles, and London. The firm is recognized for its comprehensive legal services, ranking 51st by revenue on The American Lawyer's Am Law 200 (2025) and No. 6 on its 2025 A-List. Chambers USA 2026 also named Arnold & Porter a "Leading Firm" in 75 practice areas, highlighting its ability to handle large, high-stakes matters.
The firm's intellectual property litigation practice specializes in complex, high-stakes patent disputes, particularly for clients in the life sciences and technology sectors. Technology areas of expertise span pharmaceuticals, biotechnology, medical devices, software, semiconductors, telecommunications, consumer electronics, and automotive technology. While capable of prosecuting IP rights, Arnold & Porter primarily operates on the defense side, with 9 of its 10 tracked appearances being for defendants, reflecting a focus on defending operating companies against infringement claims.
Arnold & Porter has secured significant outcomes for its clients. Notably, the firm achieved a unanimous U.S. Supreme Court victory in 2023 for Sanofi and Regeneron Pharmaceuticals Inc. in a closely watched case concerning antibody patents and enablement, upholding the invalidation of Amgen's patents. The firm also won a $158 million jury verdict for Boston Scientific in 2023 in a patent infringement case related to endoscopic clips, which subsequently settled. In online gaming, Arnold & Porter secured three wins across different jurisdictions under 35 U.S.C. § 101 within five months (2022-2023), leading to the invalidation of six patents. A Federal Circuit victory for BetMGM in June 2024 concluded a three-year patent litigation regarding GPS technology. The firm also represented Crocs, Inc. in asserting and defending its IP rights.
The firm maintains a substantial and highly ranked Patent Trial and Appeal Board (PTAB) practice, having filed or defended over 280 Inter Partes Reviews (IPRs), Post-Grant Reviews (PGRs), and Covered Business Method (CBM) reviews across diverse technologies. Key partners in the IP litigation practice include Michael A. Berta, recognized for his expertise in technology and life sciences litigation, and Ali R. Sharifahmadian, noted for his track record in IPR proceedings for large technology companies and his work in semiconductor and telecommunications patent disputes. Abby Lynn Parsons, also a prominent IP litigation partner, brings trial experience across pharmaceuticals, medical devices, and software.
Attorneys
Roles
- Counsel19
- lead counsel17
- of counsel3
- back-up counsel3
- Attorney3
- Lead Counsel2
- Of Counsel2
- backup counsel2
- Attorney of record for Patent Owner2
- Outside counsel1
- Outside Counsel1
Cases (20)
- Δ defendantApple, Inc. v. CPC Patent Technologies Pty LtdJonah Heemstra · Of Counsel
- Δ defendantExpress Mobile, Inc. v. Adobe Inc. et al.Ryan J. Casamiquela · Counsel
- Δ defendantEXPRESS MOBILE, INC. v. Squarespace, Inc.Michael A. Berta · lead counsel
- π plaintiffGeneral Motors LLC v. Cerence Operating CompanyAli R. Sharifahmadian · lead counsel
- Δ defendantGREE, Inc. v. Supercell OyMichael J. Berta · lead counsel
- Δ defendantHeadwater Research LLC v. Charter Communications, Inc.Daniel L. Reisner · Lead Counsel
- Δ defendantI/P Engine, Inc. v. AOL, Inc. et al.Michael A. Berta · Lead Counsel
- Δ defendantIntent IQ, LLC v. Adform, Inc.Michael A. Berta · of counsel
- Δ defendantLululemon USA Inc. v. Nike, Inc.Christopher J. Renk · lead counsel
- π plaintiffNike, Inc. v. Lululemon USA Inc.Christopher J. Renk · Attorney of record for Patent Owner
- π plaintiffNike, Inc. v. New BalanceAaron Patrick Bowling · Counsel
- π plaintiffNike, Inc. v. Skechers U.S.A., Inc.Chris Renk · lead counsel
- Δ defendantPetitioner v. Wiz, Inc.Dori Ann Hanswirth · Of Counsel
- Δ defendantRegeneron Pharmaceuticals Inc. v. Unnamed DefendantElizabeth J. Holland · lead counsel
- π plaintiffSamsung Electronics Co., Ltd. et al. v. Staton Techiya, LLCDavid A. Caine · lead counsel
- π plaintiffSkyworks Solutions, Inc. et al. v. Grand Chip Labs Inc. et al.J. Mark Gidley · Attorney
- π plaintiffTesla Inc. v. Charge Fusion Technologies, LLCDavid A. Caine · Outside counsel
- Δ defendantUntitled caseAbby Lynn Parsons · lead counsel
- Δ defendantUntitled caseAbby Lynn Parsons · Counsel
- Δ defendantUntitled caseDavid A. Caine · Outside Counsel