Company lists · Data refreshed September 2026

Top 25 International business law firms based in Portland, United States

Name: International business law firms based in Portland, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 4, 2026 74 companies tracked

RevenueBase identified 74 international business law firms headquartered in Portland, United States as of September 2026 and tracks 1,093 professional contacts across them, including 714 with verified work emails. New York is the largest hub.

This list covers international business law firms headquartered in Portland, United States, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, how directly it supports the match, and when it was last checked. Data refreshed September 4, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list HQ checked on every row Match evidence on every row Refreshed Sep 4, 2026 86% judged on-target in blind review

74Companies

1,093Contacts tracked

714Verified emails

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The 25 largest international business law firms based in Portland, United States

Ranked by team size

Top 25 of 74 international business law firms based in Portland, United States, ranked by team size, largest first. Data refreshed Sep 4, 2026. Evidence rates how directly each company's own description names international business law firms: strong (names it), partial (names part of it), indirect (matched on its full profile rather than the summary shown). Click a count to unlock that company's people.
#	Company	Headquarters	Employees	Contacts
1	Tonkon Torp LLPStrong evidence	Portland, OR, United StatesHQ checked Sep 4, 2026	51-200	197
	“A leading Pacific Northwest law firm, Tonkon Torp provides legal counsel, business advice and litigation services to regional, national and international clients.” Source: company website · checked Sep 4, 2026
2	Norman, Hanson & Detroy, LLCPartial evidence	Portland, ME, United StatesHQ checked Sep 4, 2026	51-200	95
	“Norman, Hanson & DeTroy, LLC, is a highly respected law firm in Maine with a widely diversified practice.” Source: company website · checked Sep 4, 2026
3	Sussman Shank LLPPartial evidence	Portland, OR, United StatesHQ checked Sep 4, 2026	51-200	74
	“A Business Law Firm for Modern Times.” Source: company website · checked Sep 4, 2026
4	Cosgrave Vergeer Kester LLPIndirect evidence	Portland, OR, United StatesHQ checked Sep 4, 2026	11-50	65
	“Excellent client service has always been our overarching goal.” Source: company website · checked Sep 4, 2026
5	Samuels Yoelin Kantor LLPPartial evidence	Portland, OR, United StatesHQ checked Sep 4, 2026	11-50	50
	“With roots dating back to 1927, Samuels Yoelin Kantor LLP ranks as one of Oregon’s oldest law firms.” Source: company website · checked Sep 4, 2026
6	Stoll BerneIndirect evidence	Portland, OR, United StatesHQ checked Sep 4, 2026	11-50	39
	“Deeply rooted in the great Northwest and nationally recognized for outstanding work for nearly 40 years, Stoll Berne has achieved extraordinary results for our clients through…” Source: company website · checked Sep 4, 2026
7	Chock BarhoumIndirect evidence	Portland, OR, United StatesHQ checked Sep 4, 2026	11-50	36
	“Chock Barhoum LLP is one of the preeminent litigation firms in the Northwest.” Source: company website · checked Sep 4, 2026
8	Chenoweth LAW GroupPartial evidence	Portland, OR, United StatesHQ checked Sep 4, 2026	11-50	35
	“At Chenoweth Law Group, P.C, we provide effective advocacy in complex commercial and civil litigation.” Source: company website · checked Sep 4, 2026
9	Wyse Kadish LLPIndirect evidence	Portland, OR, United StatesHQ checked Sep 4, 2026	11-50	33
	“Since our founding in 1985, Wyse Kadish LLP has provided a range of exceptional legal services to individuals, families, and businesses.” Source: company website · checked Sep 4, 2026
10	Perkins ThompsonPartial evidence	Portland, ME, United StatesHQ checked Sep 4, 2026	11-50	30
	“Perkins Thompson is a client-centric, Maine-based law firm that works with businesses, institutions, and individuals to realize their goals.” Source: company website · checked Sep 4, 2026
11	Cable HustonIndirect evidence	Portland, United StatesHQ checked Sep 4, 2026	11-50	28
	“Over 30 years ago, the earliest iteration of Cable Huston (pronounced, “Cable Houston”) was formed with the express purpose of providing clients superior legal guidance without…” Source: company website · checked Sep 4, 2026
12	JJH LAW Firm Pearl DistrictPartial evidence	Portland, OR, United StatesHQ checked Sep 4, 2026	1-10	26
	“Founded in 2010, JJH Law offers cutting-edge, smart and creative solutions for its clientele on almost all business matters, but especially in the fields of employment law and…” Source: company website · checked Sep 4, 2026
13	Immix LAWStrong evidence	Portland, OR, United StatesHQ checked Sep 4, 2026	11-50	24
	“As an industry change agent, Immix Law serves as a catalyst for innovation by representing diverse, international, and trailblazing clientele at every stage of the business…” Source: company website · checked Sep 4, 2026
14	Mcewen Gisvold LLPPartial evidence	Portland, OR, United StatesHQ checked Sep 4, 2026	11-50	24
	“One of Oregon’s original law firms, McEwen Gisvold LLP was founded in 1886 as Cake & Cake.” Source: company website · checked Sep 4, 2026
15	Brownstein RaskPartial evidence	Portland, OR, United StatesHQ checked Sep 4, 2026	11-50	19
	“Brownstein Rask LLP has been a prominent midsize Portland law firm since its founding over 50 years ago.” Source: company website · checked Sep 4, 2026
16	Allegiant LAW LLPPartial evidence	Portland, OR, United StatesHQ checked Sep 4, 2026	11-50	18
	“Allegiant Law (formerly known as Richardson Wang) is a boutique Portland, Oregon law firm focusing on litigation and business matters.” Source: company website · checked Sep 4, 2026
17	Mcdowell Rackner Gibson PCPartial evidence	Portland, OR, United StatesHQ checked Sep 4, 2026	11-50	16
	“Energy, Environmental, and Telecommunications Law, these fields are undergoing constant change and rapid growth.” Source: company website · checked Sep 4, 2026
18	Curtis Thaxter LLCIndirect evidence	Portland, ME, United StatesHQ checked Sep 4, 2026	11-50	16
	“The firm was founded in 1975 by a group of attorneys led by former Maine Governor and U.S.” Source: company website · checked Sep 4, 2026
19	Elliott, Ostrander & Preston, P.CIndirect evidence	Portland, United StatesHQ checked Sep 4, 2026	11-50	13
	“Our experience and training allow us to provide the full range of legal services expected of a larger firm, but without the inefficiency of an institutional bureaucracy.” Source: company website · checked Sep 4, 2026
20	IdealegalPartial evidence	Portland, OR, United StatesHQ checked Sep 4, 2026	1-10	12
	“An innovative and client-focused IP and business boutique law firm.” Source: company website · checked Sep 4, 2026
21	Radler White Parks & Alexander LLPIndirect evidence	Portland, OR, United StatesHQ checked Sep 4, 2026	11-50	11
	“Radler White Parks & Alexander LLP was created to offer clients industry leading legal services in land use, real estate and related corporate matters.” Source: company website · checked Sep 4, 2026
22	Bailey Immigration, PCIndirect evidence	Portland, OR, United StatesHQ checked Sep 4, 2026	11-50	11
	“I believe that the United States of America is truly an immigrant nation.” Source: company website · checked Sep 4, 2026
23	Buchanan Angeli Sullivan & Ferrer LLPPartial evidence	Portland, OR, United StatesHQ checked Sep 4, 2026	11-50	10
	“BUCHANAN ANGELI SULLIVAN & FERRER LLP is a law practice company based out of 621 SW Morrison Street, Suite 1250, Portland, Oregon, United States.” Source: company website · checked Sep 4, 2026
24	Petruccelli, Martin & Haddow, LLPPartial evidence	Portland, ME, United StatesHQ checked Sep 4, 2026	11-50	10
	“Petruccelli, Martin & Haddow, LLP, one of Maine’s premier law firms, has been providing successful, aggressive and innovative legal representation in a wide variety of matters for…” Source: company website · checked Sep 4, 2026
25	Carr Butterfield, LLPPartial evidence	Portland, OR, United StatesHQ checked Sep 4, 2026	1-10	10
	“Carr Butterfield, LLP is a client-focused law firm near Portland, Oregon.” Source: company website · checked Sep 4, 2026

Showing 25 of 74 international business law firms based in Portland, United States

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International business law firms based in Portland, United States at a glance

As of Sep 4, 2026

1-10Median size (employees)

New YorkLargest hub · 825 HQs

Contacts with mobile numbers

Sep 4, 2026Data refreshed

Companies by employee count

1-10

11-50

51-200

Email recency for this list is measured across the whole United States list rather than this city, so it is reported there. Company counts and contact totals on this page are exact for Portland, over 74 companies.

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among international business law firms, so some rows will be adjacent to the category rather than pure plays. The description and evidence rating on every row are there so you can check each match yourself.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies: Companies headquartered in Portland, United States whose own description of what they do matches “international business law firms”. Matching reads each company's description, not its industry code or its name.
What we exclude: Companies whose own description does not clearly place them among international business law firms, and records with no verified work email. Companies headquartered outside Portland are excluded even when they keep an office there.
Match quality: In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and an evidence rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
Ranking: Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification: Every listed company carries at least one verified work email, 714 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh: This page's figures were pulled from the company graph on September 4, 2026. Lists refresh periodically as the graph is re-checked.
Corrections: Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

International business law firms by metro in the United States

Frequently asked

How many international business law firms are there based in Portland, United States?

RevenueBase identified 74 international business law firms headquartered in Portland, United States as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

Tonkon Torp LLP, headquartered in Portland, tops this list with the largest team on record.

Which city has the most international business law firms?

New York leads with 825 headquartered companies, followed by Chicago (321) and Los Angeles (302).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 714 verified decision-maker contacts tracked across these 74 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 4, 2026.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase SmartSearch, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.