Overview
Status
Active
Registry date
2026-04-09
Activity description
ByArb is a boutique law firm specialising in arbitration and other forms of dispute resolution. It also handles contract advisory, mediation, conciliation, expert determination, claim management, dispute boards, and state court litigation.
Registered address
Plac Stanisława Małachowskiego 2, 00-066 Warszawa, Poland
Website
byarbitration.comWebsite active
Email
Phone
Industry
- Legal activities (69.10.Z)Primary
Bank accounts
Registered as a VAT taxpayer on 2026-05-09. Active
Debt
No entries in the National Debtors Register (KRZ). No proceedings in KRZ
Public aid
No public aid cases recorded in the last 10 years.
Tenders
No recorded participation in tenders.
Partners
| Partners |
|---|
Piotr Bytnerowicz (44)Marital property community |
Marcin Zbytniewski (44)Marital property community |
Manner of representation
Each partner authorized to represent the company has the right to represent the company independently.
Beneficial owners
| Person | Rights | |
|---|---|---|
Piotr Bytnerowicz (44)  | Natural person holding a senior management position in a parent entity (e.g. parent company). | |
Marcin Zbytniewski (44) | Natural person holding a senior management position in a parent entity (e.g. parent company). |
Competitors
| Name | Revenue | Website | ||
|---|---|---|---|---|
| WKB Wierciński, Kwieciński, Baehrsp. k. | $22,743,777.66 | wkb.pl | ||
| Tokarska, Kretowiczsp. k. | $2,930,955.17 | kancelaria.legal | ||
| ARPI & Partnerssp. z o.o. | $2,282,788.68 | arpi.com | ||
| Viroux & Partnerssp. k. | $1,654,160.16 | viroux.partners | ||
| Staroń & Partnerssp. k. | $332,290.83 | staronpartners.com | ||
| Arbiursp. z o.o. | $308,687.42 | arbiur.pl | ||
| Wysok Kancelaria Radcowska Spółka Komandytowo – AkcyjnaS.K.A. | $295,766.82 | wysok.pl | ||
| Tarcza Sprawiedliwościsp. z o.o. | $177,564.71 | tarczasprawiedliwosci.pl | ||
| Akkasp. z o.o. | $63,190.78 | akka.waw.pl | ||
| EBOPsp. z o.o. | $7,114.54 | ebop.com.pl |
FAQ
Last updated: 2026-06-19