Wolf Greenfield

What Wolf Greenfield does

Wolf Greenfield (legal name Wolf, Greenfield & Sacks, P.C.) is a Boston-headquartered professional services corporation operating exclusively as an intellectual property law firm since its founding in 1927. With more than 160 IP professionals, including 150+ attorneys and technology specialists spread across offices in Boston (HQ), New York, and Washington, DC, the firm delivers seven integrated service lines: patent prosecution and protection, federal district court litigation, ITC Section 337 litigation, appellate practice, post-grant proceedings (IPR/PGR) before the PTAB, trademark and copyright registration and enforcement, and licensing and transactional IP counseling. Coverage spans five technology practice areas: biotechnology, chemical and materials technologies, electrical and computer technologies, mechanical technologies, and pharmaceutical sciences. 93% of professionals hold science or engineering degrees, with 68 holding advanced degrees (MD, PhD, MS), and the firm is consistently ranked in IAM Patent 1000, Best Lawyers in America, WIPR Leaders, and other peer-reviewed directories.

The firm generates revenue through traditional hourly and matter-based legal services billing on a quote-based, engagement-by-engagement basis, with no publicly disclosed pricing tiers. Its go-to-market is relationship-driven and event-anchored: enterprise field sales through referrals and professional networks, active participation in BIO International Convention, LSPN, IPWatchdog, and HNBA events, and a community-led pipeline built through IP workshops and mentorships at MIT Sandbox, Columbia Technology Ventures, MassChallenge, Nucleate, and the Materials Research Society. Customer concentration is highly diversified across multinational corporations (Google, Bose, Infineon, Ginkgo Bioworks, Valneva, Cognex, ASSA ABLOY), leading research institutions (University of Florida), and emerging startups (Lightmatter, Sion Power, PathAI).

Ownership is private, held by attorney shareholders under a professional corporation structure governed by President and Managing Partner Rob Walat, with Keith Kotler as Chief Financial Officer and Katie Creedon as Chief Strategy Officer. There is no private equity, venture capital, or parent company ownership indicated. The firm has no software products, no proprietary AI models, and no disclosed patents or technology IP of its own; all revenue is derived from professional legal services delivery.

Name

Wolf Greenfield

Legal name

Wolf, Greenfield & Sacks, P.C.

Website

https://wolfgreenfield.com

Company type

Private

Founded year

1927

Operating status

Operating

Headcount range

251–500 employees

Short description

Wolf Greenfield is the largest Boston-based law firm devoted exclusively to intellectual property law, with 160+ IP professionals across Boston, New York, and Washington, DC. Founded in 1927, it serves multinational corporations, universities, and startups with patent prosecution, litigation, ITC, PTAB, trademark, and licensing services.

Ownership category

akta.pro rank

Product category

Intellectual Property Legal Services

NAICS

Management Consulting Services (54161)

SIC

Services-Legal Services (8111)

akta.pro primary industry

Patent Prosecution & Portfolio Management (BPAHAMAA)

Keywords

• Intellectual property law
• Patent prosecution
• Patent litigation
• Trademark registration
• Technology licensing

Headquarters

HQ city

Boston

HQ country

United States

HQ region

North America

Offices3 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Operations, Marketing or Sales, Infrastructure, Others

Revenue model

1. Legal Services Billing: Traditional law firm revenue model based on professional legal services including patent prosecution, litigation, licensing transactions, and counseling. Services provided to corporations, universities, and startups for intellectual property protection and enforcement.

Go-to-market motion3 records

Distribution channels1 record

Marketing channels6 records

Core offering

Wolf Greenfield is an intellectual property law firm providing comprehensive IP legal services across seven core practice lines: Patent prosecution and protection, Litigation, ITC Litigation, Appellate Litigation, Post-Grant Proceedings (IPR/PGR), Trademark & Copyright, and Licensing & Transactions. Services are delivered by 160+ attorneys and technology specialists organized around five technology domains—Biotechnology, Chemical & Materials Technologies, Electrical & Computer Technologies, Mechanical Technologies, and Pharmaceutical—to serve multinational companies, universities, biotech firms, and startups.

Product overview

Wolf Greenfield (Wolf, Greenfield & Sacks, P.C.) is a specialized intellectual property law firm providing comprehensive legal services. The firm operates as a single integrated practice offering seven core legal service lines: Patent (prosecution and protection), Litigation, ITC Litigation, Appellate Litigation, Post-Grant Proceedings, Trademark & Copyright, and Licensing & Transactions. These services are delivered across five technology practice areas (Biotechnology, Chemical & Materials Technologies, Electrical & Computer Technologies, Mechanical Technologies, and Pharmaceutical) enabling specialized IP counsel for clients ranging from startups to multinational corporations and leading universities. The firm does not offer software products; all offerings are legal/attorney services.

Differentiator

Problem solved

Functional benefit

Products and services

• Patent Services Patent prosecution, protection, and portfolio development for inventions across all technology areas including biotechnology, pharmaceuticals, chemicals, electronics, and mechanical innovations. Delivered to corporations, universities, and startups requiring defensible patent portfolios.
• Litigation IP litigation services including complex patent litigation in federal district courts, with aggressive trial strategies and technical/scientific expertise to navigate IP disputes on behalf of corporate and startup clients.
• ITC Litigation Intellectual property litigation before the U.S. International Trade Commission (ITC), protecting clients' IP rights through Section 337 investigations. Based primarily out of the firm's Washington, DC office.
• Appellate Litigation Appellate representation for IP cases before federal appellate courts including the Federal Circuit and U.S. Supreme Court, handling appeals arising from district court and PTAB proceedings.
• Post-Grant Proceedings Inter partes review (IPR), post-grant review (PGR), and other PTAB proceedings with a dedicated practice producing winning results in complex patent challenges.
• Trademark & Copyright Trademark prosecution, registration, and enforcement; copyright registration and protection; brand protection strategies for clients building and defending distinctive brands.
• Licensing & Transactions Technology-based transaction counsel including IP licensing, technology transfers, due diligence, and agreements supporting business transactions involving intellectual property assets.

Quantifiable outcome

• Trusted by clients who have grown from $30 million to multi-billion dollar businesses
• +1 more outcomes

Named customers16 records

Segments4 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Partnerships

14 partnerships are on record, tiered minor.

• Mewburn EllisminorStrategic or Co-development Partner · 6 May 2026Co-hosting in-person panel discussion and networking event with Mewburn Ellis at their new London office. Joint event on Fast Growing Techbio covering data-driven IP strategies and commercialization.
• Bottom LineminorStrategic or Co-development Partner · 3 April 2025Wolf Greenfield provides employee mentors for Bottom Line's Career Champions program, as well as support in donations and event sponsorships. The firm supports first-generation college students in career development.
• Foundation for the Advancement in IP Law (FADIPL)minorStrategic or Co-development PartnerAs a member, Wolf Greenfield supports FADIPL's programs and recruits from its scholars program for their Fellowship Program, helping advance diversity in IP law.
• Leadership Council for Legal Diversity (LCLD)minorStrategic or Co-development PartnerWolf Greenfield is a member of LCLD to build a more open and diverse legal profession through leadership development programs. Attorneys participate as diversity fellows and diversity pathfinders.
• Columbia Technology VenturesminorStrategic or Co-development PartnerWolf Greenfield attorneys present IP 101 sessions as part of Columbia's Innovation-to-Impact series, providing practical introduction to IP for faculty, postdocs, and graduate students.
• MIT Sandbox Innovation FundminorStrategic or Co-development PartnerWolf Greenfield attorneys lead IP Basics Workshops for MIT Sandbox teams, covering IP and patent strategy fundamentals.
• BranchfoodminorGTM or Marketing PartnerCo-hosted virtual office hours-style webinar on Protecting IP in Corporate Partnerships for FoodTech and AgTech Start-ups with Branchfood.
• NucleateminorStrategic or Co-development PartnerJean Ge serves as startup mentor for Nucleate Activator Program, providing IP workshops to cohort of start-up companies in the San Francisco/Bay Area Chapter.
• Materials Research Society (MRS)minorStrategic or Co-development PartnerWolf Greenfield sponsors a three-part webinar series with MRS focused on helping start-ups tackle IP challenges, including sessions on IP for Start-ups, Making IP Appealing to Investors, and Avoiding Loss of IP.
• Life Sciences Patent Network (LSPN)minorGTM or Marketing PartnerWolf Greenfield is a proud sponsor of LSPN's Annual North America Conference, the essential destination for IP insights in pharmaceutical, biotechnology, and medical technology industries.
• One NucleusminorStrategic or Co-development PartnerCo-presented at One Nucleus Boston Bootcamp on IP strategy topics including preparing for partnering and licensing negotiations.
• Winter Walk BostonminorGTM or Marketing PartnerWolf Greenfield sponsors the annual Winter Walk Boston initiative raising awareness and funds to help end homelessness in Greater Boston.
• Pine Street InnminorOthersLargest homeless services provider in New England. Wolf Greenfield and employees regularly do volunteer projects and donate money to support Pine Street Inn's mission.
• Greater Boston Legal Services (GBLS)minorOthersWolf Greenfield participates in the annual GBLS Associates Fund Drive, winning the Jack Ward Cup award 14 consecutive years and raising over $150,000.

Scale indicators5 records

Recent moves6 records

Expansion highlights6 records

Direct peers

• Fish & Richardson: The largest U.S. intellectual property-only law firm with a comparable model: patent prosecution, litigation, and PTAB/post-grant work for tech and life sciences clients. Direct competitor for talent and Fortune 500 IP mandates.
• Finnegan: Premier IP-only firm headquartered in Washington, DC, with strong patent prosecution, ITC, and PTAB practices. Direct competitor for high-stakes patent litigation and life sciences clients.
• Mintz: Boston-based firm with a substantial IP practice alongside broader corporate and litigation work. Competes directly for the same Boston/Cambridge biotech and tech client base.
• Choate Hall & Stewart: Boston firm with a renowned life sciences and IP practice. Direct competitor for Boston biotech, university TTO, and technology clients seeking integrated IP and corporate counsel.
• Kilpatrick Townsend: Large IP-focused firm with deep patent prosecution and litigation capabilities across electrical, mechanical, and life sciences technologies. Direct competitor for mid-to-large enterprise IP portfolios.

Broad incumbents

• Goodwin Procter: Large Boston-based full-service firm with a major IP practice that competes for the same tech, life sciences, and venture-backed clients but bundles IP with corporate, litigation, and regulatory work.
• Ropes & Gray: Major Boston-headquartered Am Law firm with strong IP capabilities, particularly in life sciences. Competes for the same biotech and university clients but offers a much broader practice mix.
• WilmerHale: Boston-based global law firm with significant IP litigation and patent prosecution practices. Competes for enterprise IP mandates and life sciences work, with broader international reach than Wolf Greenfield.
• Cooley LLP: Silicon Valley-rooted full-service firm with a leading tech-focused IP practice. Competes for venture-backed and tech enterprise clients (similar to Lightmatter, Sion Power, and other Wolf Greenfield startup engagements) but offers broader corporate and capital markets capabilities.

Regional players

• McCarter & English: Northeast-based firm with a substantial IP practice serving tech, life sciences, and chemical clients. Comparable regional competitor in the Boston-to-DC corridor.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks6 records

Key highlights6 records

Customer concentration

• LinkedInlinkedin.com/company/wolf-greenfield
• Xx.com/wolfgreenfield
• Facebookfacebook.com/wolfgreenfieldpc

Revenue estimate

Valuation estimate

Number of profiles

Profiles15 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 Wolf Greenfield