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Most Active Artificial Intelligence and Machine Learning Patent Prosecution Firms — 2025

Ranking of law firms by the number of U.S. patents granted in 2025 for which the firm is identified as prosecution counsel of record and the patent qualifies under IP Brainbox’s Artificial Intelligence and Machine Learning technology definition.

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292 qualifying grants led the 2025 ranking. The Top 50 cutoff was 31 qualifying grants (Top 50 positions; ties included). Rankings use competition ranking. Firms with equal qualifying grants share a rank. All firms tied at the public cutoff are included. Rankings reflect documented prosecution activity rather than an assessment of firm quality.

What changed

Selected editorial signals from this publication run.

Measurement period: Jan. 1–Dec. 31, 2025 · Data through: September 8, 2026 · Published: September 17, 2026 · Methodology: v1.3

51 law firms ranked · Top 50 positions; ties included

Rankings measure documented patent prosecution activity, not firm quality. Firm names are normalized from prosecution counsel-of-record information in the underlying U.S. patent records. Related name variants are consolidated where they can be reliably resolved to the same organization.

Most activeFastest growingHighest concentration

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51 law firms ranked

Rank	Firm	Qualifying Grants	AI/ML Technology Concentration	YoY
#1	Fish & Richardson, P.C.	292	39.8%	-19.6%	View intelligence
#2	Foley and Lardner, LLP	171	36.5%	-14.9%	View intelligence
#3	Kilpatrick Townsend and Stockton, LLP	137	42.8%	-10.5%	View intelligence
#4	Schwegman, Lundberg and Woessner, P.A.	126	34.4%	-24.1%	View intelligence
#5	Womble Bond Dickinson (US), LLP	106	25.1%	-0.9%	View intelligence
#6	Harrity & Harrity, LLP	102	54.8%	+32.5%	View intelligence
#7	Amin, Turocy & Watson, LLP	96	77.8%	-25%	View intelligence
#8	Dority & Manning, P.A.	94	43.3%	+42.4%	View intelligence
#8	Lee & Hayes, PLLC	94	50.5%	-27.7%	View intelligence
#10	Greenberg Traurig, LLP	93	36.4%	-5.1%	View intelligence
#11	Sughrue Mion, PLLC	89	20.9%	-31.5%	View intelligence
#12	NSIP Law	88	37%	-14.6%	View intelligence
#13	Finnegan, Henderson, Farabow, Garrett & Dunner, LLP	87	44.7%	-19.4%	View intelligence
#14	Davis Wright Tremaine, LLP	83	55.2%	+56.6%	View intelligence
#15	Alston and Bird, LLP	78	58.1%	-28.4%	View intelligence
#15	Fenwick & West, LLP	78	52.7%	-28.4%	View intelligence
#17	Caldwell Intellectual Property Law, LLC	77	75.1%	-24.5%	View intelligence
#17	Haynes and Boone, LLP	77	38%	0.0%	View intelligence
#19	Ryan, Mason & Lewis, LLP	76	71.5%	-3.8%	View intelligence
#20	Marshall, Gerstein and Borun, LLP	73	40.3%	-5.2%	View intelligence
#21	Norton Rose Fulbright US, LLP	68	51.9%	+78.9%	View intelligence
#22	Patterson & Sheridan, LLP	66	47.6%	-8.3%	View intelligence
#23	Arent Fox Schiff, LLP	62	31.1%	-8.8%	View intelligence
#24	McDonnell Boehnen Hulbert & Berghoff LLP	59	31.5%	+25.5%	View intelligence
#24	Nicholson De Vos Webster & Elliott, LLP	59	63.4%	+13.5%	View intelligence
#26	Harness, Dickey and Pierce, P.L.C.	55	20.8%	-35.3%	View intelligence
#27	Cantor Colburn, LLP	54	25.8%	+42.1%	View intelligence
#28	K & L Gates, LLP	53	14.6%	+15.2%	View intelligence
#29	Polsinelli, P.C.	51	31.5%	0.0%	View intelligence
#30	Wolf, Greenfield and Sacks, P.C.	47	23.7%	-9.6%	View intelligence
#31	Knobbe Martens Olson and Bear, LLP	45	16.1%	-29.7%	View intelligence
#32	Jianq Chyun Intellectual Property Office	44	15.7%	-47%	View intelligence
#33	Oblon McClelland Maier & Neustadt, LLP	42	19.9%	-16%	View intelligence
#34	Law Office of Michael Dryja	41	19.5%	-8.9%	View intelligence
#35	Troutman Pepper Locke, LLP	40	32.7%	-33.3%	View intelligence
#36	Tutunjian & Bitetto, P.C.	39	65%	↑ from 11 in 2024	View intelligence
#36	Pillsbury Winthrop Shaw Pittman, LLP	39	28.7%	-31.6%	View intelligence
#38	Nixon & Vanderhye, P.C.	38	37.2%	-28.3%	View intelligence
#38	Shook, Hardy & Bacon, LLP	38	50.4%	-40.6%	View intelligence
#40	CHIP Law Group	36	23.3%	+28.6%	View intelligence
#41	Jaffery Watson Hamilton & De Sanctis, LLP	35	63.6%	-18.6%	View intelligence
#41	Xsensus, LLP	35	22.2%	-35.2%	View intelligence
#43	Brooks and Kushman, P.C.	34	28.1%	-33.3%	View intelligence
#43	Holland & Hart, LLP	34	19.6%	-40.4%	View intelligence
#45	Lowenstein Sandler, LLP	33	35.5%	-2.9%	View intelligence
#46	Alleman Hall & Tuttle, LLP	32	38.6%	+60%	View intelligence
#46	Sheppard Mullin Richter & Hampton, LLP	32	39.8%	-20%	View intelligence
#48	Barnes and Thornburg, LLP	31	18.4%	+19.2%	View intelligence
#48	DLA Piper LLP (US)	31	44.7%	-39.2%	View intelligence
#48	Galvin Patent Law, LLC	31	88.5%	+63.2%	View intelligence

Most Active

Fish & Richardson, P.C.

292 qualifying grants

39.8% AI/ML concentration

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Top-10 Momentum

Dority & Manning, P.A.

#8 · +42.4% YoY

94 qualifying grants

High-concentration leader

Galvin Patent Law, LLC

88.5% AI/ML concentration

31 qualifying grants

Notable mover

Harrity & Harrity, LLP

+32.5% YoY

102 qualifying grants

Artificial Intelligence and Machine Learning theme hub · 2025 overview

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Public rankings show activity signals from U.S. grants. Full prosecution intelligence — allowance rates, pendency, and office-action patterns — is available in the product.

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Lists use firm counsel-of-record links on U.S. granted patents that have CPC codes. Pending applications without a grant usually lack CPC and are omitted. Solo practitioners appear on attorney rankings, not firm rankings.

Decision support only — not legal advice, not a directory of “best lawyers,” and not an endorsement. Calculated statistics cannot be edited by the attorney or firm.