Dilworth & Barrese

What Dilworth & Barrese does

Dilworth & Barrese, LLP is a full-service intellectual property law firm founded in 1987 by Peter G. Dilworth and Rocco S. Barrese, headquartered in Woodbury, New York, with additional team locations in Melville, San Diego, Silicon Valley, and Monterey Peninsula. The firm delivers patent prosecution and litigation, trademark registration and enforcement, copyright protection, trade secret counseling, IP licensing, and technology transfer services, with organized specialty practices across biotechnology, chemical, computer science, electrical engineering, life sciences, mechanical, pharmaceutical, and International Trade Commission matters. Its attorneys hold advanced technical degrees alongside their legal credentials and are licensed to practice before the USPTO and in U.S. federal and state courts.

The firm's go-to-market is sales-led and enterprise-focused, delivering services through direct attorney-client engagements to Fortune 500 companies, startups, and major research universities. Revenue is generated on a professional services fee basis, with pricing negotiated per matter, supported by multi-year client relationships and matter-specific engagements. Marketing is primarily conducted through the firm's website, thought leadership blog content on IP law topics, and search-engine-optimized publications on patent eligibility and case law developments.

Dilworth & Barrese has expanded its service footprint through two principal alliances: a 2017 strategic affiliation with Dilworth IP, LLC (founded by Michael Dilworth, son of co-founder Peter Dilworth), and a 2019 association with IP2 Patentwalts GmbH of Mönchengladbach, Germany, which together create a coordinated cross-jurisdictional IP service network spanning the U.S., Germany, Spain, Austria, and China. The firm remains privately held under partner ownership with no disclosed institutional investment or external funding.

Name

Dilworth & Barrese

Legal name

Dilworth & Barrese, LLP

Website

https://dilworthbarrese.com

Company type

Private

Founded year

1987

Operating status

Operating

Headcount range

11–50 employees

Short description

Dilworth & Barrese, LLP is a full-service intellectual property law firm founded in 1987, serving Fortune 500 companies, startups, and research universities with patent prosecution, trademark, copyright, and IP litigation services across multiple technical disciplines.

Ownership category

akta.pro rank

Product category

Intellectual Property Law Services

NAICS

Offices of Lawyers (541110), Legal Services (5411)

SIC

Services-Legal Services (8111)

akta.pro primary industry

Patent Prosecution & Portfolio Management (BPAHAMAA)

akta.pro secondary industries

Trademark Prosecution & Brand Protection (BPAHAMAB), IP Litigation & Dispute Resolution (BPAHAMAE), IP Due Diligence & Freedom-to-Operate (FTO) Analysis (BPAHAMAG), Copyright Services & Content Protection (BPAHAMAC)

Keywords

• Intellectual property law
• Patent prosecution
• Trademark registration
• IP litigation
• Technology transfer

Headquarters

HQ city

Melville

HQ country

United States

HQ region

North America

Offices6 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Operations, Marketing or Sales, Technology or R&D, Infrastructure

Revenue model

1. Legal Services Revenue: Dilworth & Barrese generates revenue through legal service fees for intellectual property counsel including patent prosecution, patent litigation, trademark registration, and related IP services. The firm serves Fortune 500 companies, startups, and major research universities.

Pricing tiers

Go-to-market motion2 records

Distribution channels2 records

Marketing channels3 records

Core offering

Dilworth & Barrese, LLP is a full-service intellectual property law firm providing legal counsel on patents, trademarks, copyrights, trade secrets, and unfair competition law. The firm prosecutes patent and trademark applications before the USPTO, litigates IP disputes in U.S. federal and state courts, conducts IP due diligence for transactions, and handles licensing and technology transfer. Services are organized across specialized technical practice areas including biotechnology, chemical, computer science, electrical engineering, life sciences, mechanical, pharmaceutical, and international trade commission work.

Product overview

Dilworth & Barrese, LLP is a full-service intellectual property law firm offering a comprehensive suite of legal services. The firm operates as a single integrated legal practice rather than a platform with modular products. Core services include patent prosecution and litigation, trademark registration and enforcement, copyright protection, trade secret counseling, IP licensing, and technology transfer. The firm organizes its expertise across specialized practice areas including Biotechnology, Chemical, Computer Science, Electrical Engineering, Life Sciences, Mechanical, Pharmaceutical, and International Trade Commission practices. These practice areas are staffed by attorneys with deep technical backgrounds who provide client representation from patent filing through litigation.

Differentiator

Problem solved

Functional benefit

Products and services

• Patent Prosecution Services

Named customers5 records

Segments3 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Partnerships

Two partnerships are on record, tiered core.

• IP2 Patentwalts GmbHcoreStrategic or Co-development Partner · 1 January 2019Effective January 1, 2019, Dilworth & Barrese formed an association with IP2 Patentwalts GmbH based in Mönchengladbach (Düsseldorf), Germany. This association creates an efficient single source model for addressing and securing intellectual property rights on a worldwide basis. The partnership pools experience and technological expertise in chemistry, pharmaceuticals, life sciences, process engineering, computer technology, electrical engineering, and mechanical systems.
• Dilworth IP, LLCcoreStrategic or Co-development Partner · 29 August 2017Dilworth & Barrese formed a strategic affiliation with Dilworth IP, LLC, a fellow intellectual property firm. Both firms offer their respective current and future clients a broader array of technical and legal expertise. The firms share the Dilworth name with Peter G. Dilworth (founder of Dilworth & Barrese) being father to Michael Dilworth (Founder and Managing Partner of Dilworth IP). Both firms retain their respective names and offices.

Scale indicators2 records

Recent moves7 records

Expansion highlights4 records

Broad incumbents

• Fish & Richardson: Largest US IP-only law firm with deep patent prosecution and litigation practices across the same technical disciplines (biotech, chemistry, EE, computer science) Dilworth & Barrese services. Both serve Fortune 500 R&D-driven clients; Fish & Richardson operates at a vastly larger scale but overlaps substantively on prosecution, ITC, and opinion work.
• Finnegan, Henderson, Farabow, Garrett & Dunner: Premier IP boutique headquartered near Washington, D.C., handling patent prosecution, ITC Section 337 investigations, and appeals. Direct overlap with Dilworth & Barrese's patent litigation and ITC practices, particularly for technology and life-sciences clients.
• Knobbe Martens Olson & Bear: West Coast-leaning IP boutique with very strong life sciences, medical device, and technology practices. Like Dilworth & Barrese, serves Fortune 500 R&D clients and university TTOs, and overlaps in chemistry/biotech prosecution.
• Oblon McClelland Maier & Neustadt: Long-established IP boutique with globally recognized patent prosecution practice across chemistry, semiconductors, pharma, and mechanical technologies. Comparable in technical breadth to Dilworth & Barrese's eight practice areas.
• Sterne Kessler Goldstein & Fox: Large Washington, D.C.-based IP boutique focused on patent prosecution, post-grant proceedings (IPR, reexamination), and appeals before the PTAB and Federal Circuit. Substantive overlap with Dilworth & Barrese's interferences and reexamination practice.

Others

• IP2 Patentwalts GmbH: German/European patent firm associated with Dilworth & Barrese since January 2019, sharing staff and pooling expertise. It functions as the firm's European channel rather than a competitor, but is comparable as an independent IP firm operating in adjacent chemistry, life sciences, and engineering disciplines.

Direct peers

• Ladas & Parry: Long-established IP boutique with trademark and patent prosecution strength and notable international reach. Compares to Dilworth & Barrese's mix of trademark registration, prosecution, and global filings, though known for somewhat larger IP portfolio management work.
• Harness IP (Harness, Dickey & Pierce): Mid-size Michigan-based IP boutique providing prosecution, licensing, and litigation across mechanical, electrical, chemical, and biotech arts. Highly comparable boutique-scale firm targeting similar R&D-intensive corporate clients.
• Westerman Hattori Daniels & Hilton: Smaller IP boutique with strong technical bench in EE, software, and biomedical technologies. Closest peer in scale and "specialized prosecution + selective litigation" positioning to Dilworth & Barrese.
• Wolf Greenfield & Sacks: Mid-size Boston-based IP boutique with similar technical-disciplines structure (chemistry, biotech, EE, CS, mechanical). Closest size-and-strategy analog to Dilworth & Barrese's "boutique with tech-credentialed attorneys" model.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks6 records

Key highlights7 records

Customer concentration

• Facebookfacebook.com/dilworthbarrese
• LinkedInlinkedin.com/company/dilworth-and-barrese

Revenue estimate

Valuation estimate

Number of profiles

Profiles18 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Dilworth & Barrese