Company lists · Data refreshed September 2026

Top 23 Litigation law firms based in Oslo, Norway

RevenueBase identified 43 litigation law firms headquartered in Oslo, Norway as of September 2026 and tracks 770 professional contacts across them, including 348 with verified work emails and 37 with mobile numbers. Across Norway, Oslo is the largest hub for this category.

This list covers litigation law firms headquartered in Oslo, Norway, 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, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 12, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, 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 RevenueBase Smart Search rating on every row Refreshed Sep 12, 2026 86% judged on-target in blind review
43Companies
770Contacts tracked
348Verified emails
37Mobile numbers
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The 23 largest litigation law firms based in Oslo, Norway

Ranked by team size
Top 23 of 43 litigation law firms based in Oslo, Norway, ranked by team size, largest first. Data refreshed Sep 12, 2026. RevenueBase Smart Search rates how each company's information relates to litigation law firms: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#CompanyRevenueBase Smart SearchHeadquartersEmployeesContacts
1Partial evidenceOslo, NorwayHQ checked Sep 12, 202651-200118 contacts →

Partial evidence

“Law firm based in Oslo, Norway with branch offices in Bergen, Sandefjord, Stavanger, Gol, Haugesund, Tromsø and Hamar.”

Source: RevenueBase Database · checked Sep 12, 2026
2Partial evidenceOslo, NorwayHQ checked Sep 12, 202611-5041 contacts →

Partial evidence

“Dalan Law firm was founded in 1992 following a merger between the firms Dalan, Sigmond and Swang (founded in 1876) and the lawyers Lous, Hagemann, Arff-Pettersen and Løken…”

Source: RevenueBase Database · checked Sep 12, 2026
3Indirect evidenceOslo, NorwayHQ checked Sep 12, 202611-5041 contacts →

Indirect evidence

“Solver bistår både virksomheter og privatpersoner med problemløsning i vid forstand – vi tenker lengre enn den enkeltstående konflikten som har oppstått.”

Source: RevenueBase Database · checked Sep 12, 2026
4Indirect evidenceOslo, NorwayHQ checked Sep 12, 202611-5028 contacts →

Indirect evidence

“Aurlien Vordahl & Co Advokatfirma AS tilbyr høyt kvalifisert juridisk bistand til privatpersoner, bedrifter, organisasjoner og foreninger innenfor en rekke rettsområder.”

Source: RevenueBase Database · checked Sep 12, 2026
5Indirect evidenceOslo, NorwayHQ checked Sep 12, 202611-5024 contacts →

Indirect evidence

“RIISA har spesialkompetanse innen erstatnings- og forsikringsrett med bistand opp mot de fleste forsikringsselskaper i Norge.”

Source: RevenueBase Database · checked Sep 12, 2026
6Indirect evidenceOslo, NorwayHQ checked Sep 12, 202611-5023 contacts →

Indirect evidence

“Advokatfirmaet Rogstad ble stiftet i 2014 og leverer juridiske tjenester til privatpersoner og bedrifter.”

Source: RevenueBase Database · checked Sep 12, 2026
7Indirect evidenceOslo, NorwayHQ checked Sep 12, 202611-5019 contacts →

Indirect evidence

“Advokatfirmaet Molteberg Nilsen AS er et fullservice advokatfirma som holder til i flotte kontorer sentralt på Majorstuen.”

Source: RevenueBase Database · checked Sep 12, 2026
8Indirect evidenceOslo, NorwayHQ checked Sep 12, 202611-5018 contacts →

Indirect evidence

“Hos Advokatfirmaet Lippestad er vi store nok til å håndtere komplekse juridiske utfordringer, men små nok til å gi personlig oppfølging.”

Source: RevenueBase Database · checked Sep 12, 2026
9Indirect evidenceOslo, NorwayHQ checked Sep 12, 202611-5016 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 12, 2026
10Indirect evidenceOslo, NorwayHQ checked Sep 12, 202611-5016 contacts →

Indirect evidence

“Om oss Advokatfirmaet Bratlien AS ble etablert sommeren 2018 av Ole Magnus Strømmen og Øyvind Bratlien.”

Source: RevenueBase Database · checked Sep 12, 2026
11Indirect evidenceOslo, NorwayHQ checked Sep 12, 202611-5012 contacts →

Indirect evidence

“Advokatfirmaet Andenæs DA ble etablert 2004.”

Source: RevenueBase Database · checked Sep 12, 2026
12Partial evidenceOslo, NorwayHQ checked Sep 12, 20261-1010 contacts →

Partial evidence

“Fend specializes in dispute resolution, litigation and financial crime.”

Source: RevenueBase Database · checked Sep 12, 2026
13Indirect evidenceOslo, NorwayHQ checked Sep 12, 202611-5010 contacts →

Indirect evidence

“Advokatfirmaet Robertsen er et moderne advokatfirma med solid bakgrunn og historie.”

Source: RevenueBase Database · checked Sep 12, 2026
14Indirect evidenceOslo, NorwayHQ checked Sep 12, 202611-507 contacts →

Indirect evidence

“Vi er et mellomstort advokatfirma med spesialisering i bl.a.”

Source: RevenueBase Database · checked Sep 12, 2026
15Indirect evidenceOslo, NorwayHQ checked Sep 12, 20261-105 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 12, 2026
16Indirect evidenceOslo, NorwayHQ checked Sep 12, 20261-103 contacts →

Indirect evidence

“Advokater med spesiell kompetanse innenfor områdene erstatningsrett, strafferett, familierett og arbeidsrett.”

Source: RevenueBase Database · checked Sep 12, 2026
17Partial evidenceOslo, NorwayHQ checked Sep 12, 20261-103 contacts →

Partial evidence

“Law firm de Vibe is a family-run firm specialized in criminal law and legal aid, with roots over 40 years back.”

Source: RevenueBase Database · checked Sep 12, 2026
18Indirect evidenceOslo, NorwayHQ checked Sep 12, 20261-102 contacts →

Indirect evidence

“Casus dekker et bredt spekter av fagområder, men konsentrerer selskapets virksomhet rundt utvalgte fagområder hvor selskapet har lang og omfattende erfaring i rådgivning og…”

Source: RevenueBase Database · checked Sep 12, 2026
19Indirect evidenceOslo, NorwayHQ checked Sep 12, 20261-102 contacts →

Indirect evidence

“Hjelseth Advokatfirma hjelper private selskaper og personer med juridiske problemstillinger i nærings- og arbeidslivet.”

Source: RevenueBase Database · checked Sep 12, 2026
20Indirect evidenceOslo, NorwayHQ checked Sep 12, 20261-102 contacts →

Indirect evidence

“Advokatfirmaet Grønvigh, Tjersland & Indrevær DA er et advokatfirma med kontor i Oslo, og våre advokater bistår bredt innen de forretningsjuridiske områdene.”

Source: RevenueBase Database · checked Sep 12, 2026
21Indirect evidenceOslo, NorwayHQ checked Sep 12, 20261-102 contacts →

Indirect evidence

“Djerv Advokatfirma AS består av tre advokater med bred erfaring fra straff, forvaltning og prosedyre for domstolen.”

Source: RevenueBase Database · checked Sep 12, 2026
22Indirect evidenceOslo, NorwayHQ checked Sep 12, 20261-102 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 12, 2026
23Indirect evidenceOslo, NorwayHQ checked Sep 12, 20261-101 contacts →

Indirect evidence

“ADVOKATFIRMAET OPØIEN is a company based out of Seilduksgata 5D, OSLO, Oslo, Norway.”

Source: RevenueBase Database · checked Sep 12, 2026

Showing 23 of 43 litigation law firms based in Oslo, Norway

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Litigation law firms based in Oslo, Norway at a glance

As of Sep 12, 2026
45.2%Verified-email coverage
4.8%Mobile-number coverage
17.9Average contacts per company
1-10Median size (employees)
Sep 12, 2026Page data refreshed

Companies by employee count

1-10
23
11-50
17
51-200
2
201-500
1

Freshness & accuracy

How recently the business emails were verified and the company information checked

Email last verified

Median 15.0d

Company record updated

Median 64.0d

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 litigation law firms, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search 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 Smart Search, the natural-language company search available to every RevenueBase user.
What qualifies
Companies headquartered in Oslo, Norway whose own description of what they do matches “litigation law firms”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search
RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names litigation law firms), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude
Companies whose own description does not clearly place them among litigation law firms, and records with no verified work email. Companies headquartered outside Oslo 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 its RevenueBase Smart Search 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, 348 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 12, 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.

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names litigation law firms, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many litigation law firms are there based in Oslo, Norway?

RevenueBase identified 43 litigation law firms headquartered in Oslo, Norway 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?

Elden Advokatfirma AS, headquartered in Oslo, tops this list with the largest team on record.

Which city in Norway has the most litigation law firms?

Oslo leads Norway with 56 headquartered companies, followed by Bergen (7) and Stavanger (7).

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 348 verified decision-maker contacts tracked across these 43 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 12, 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 Smart Search, 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.