Direct contact to law firm
Berlin +49 30 88 03 59 0
Poznań / Warszawa +48 61 85 82 55 0
Berlin berlin@vonzanthier.com
Poznań / Warszawa poznan@vonzanthier.com
VON ZANTHIER & DACHOWSKI
Current articles
 

Investment and commercial law How to determine who represents your counterparty? Here is a practical guide.

How to determine who represents your counterparty? Here is a practical guide.

Learn how to properly verify who represents your business partner and why confirming the authority of contract signatories is essential for your business security. Discover practical guidelines and step-by-step procedures.

How to determine who represents your counterparty? Here is a practical guide.

In business relationships, especially when concluding contracts, it is crucial to ensure that the other party is represented by a person authorized to represent the contractor. Failure to verify this may lead to negative consequences, including the most serious one: the invalidity of the contract. So how can you efficiently determine who actually represents your counterparty? Details below.

Determine the organizational form of your contractor

The first step is to determine whether the contractor operates as a sole proprietor, a civil law partnership, or a commercial company. This will determine which registers to search for information about the persons authorized to represent the company.

Check the data in the register:

Verify documents

• Request registration documents (KRS/CEIDG, articles of association) and the identity document of the person signing the agreement;

• If a representative is acting on your behalf, always request to see their power of attorney (preferably the original, but a scan is also sufficient).

Pay attention to details

Companies often have restrictions, e.g., the signatures of two board members are required, or a board member may only act jointly with a proxy.

Always verify exactly how the representation looks.

What if the contract was concluded via email or instant messenger (e.g., WhatsApp)?

If you are unsure about the authority of the person you are talking to:

• Ask in what capacity the person you are corresponding with is acting.

• request a power of attorney to be sent

• Never enter into a contract with a person whose status you cannot confirm with documents—otherwise, you may find that the contract has been concluded with an unauthorized person.

Summary

Determining who represents your business partner is a fundamental step in protecting your interests. Use official registers (KRS, CEIDG), analyze documents, and verify powers of attorney. Spending a few minutes checking the other party can protect you from serious problems, including contract invalidity or difficulties in pursuing claims.

Article published on
28 November 2025

Share this article

You may also be interested in these articles:

current, Labour law and HR
07.05.2026

The new rules on the National Labour Inspectorate are now in force. Time for an audit before the inspector arrives.

The Act of 11 March 2026 amending the Act on the National Labour Inspectorate and certain other acts, signed by the President, grants labour inspectors the power to determine the existence of an employment relationship by way of a unilateral administrative decision. The new provisions fundamentally reshape the legal landscape for employers relying on civil law contracts and B2B cooperation models.

Read article
current
06.05.2026

International Trade Forum 2026 in Zurich: discussions on Swiss companies’ expansion into Poland

Łukasz Dachowski, Managing Partner at VON ZANTHIER & DACHOWSKI, participated in the International Trade Forum 2026 in Zurich, organised by Switzerland Global Enterprise. The event provided an opportunity to speak with Swiss businesses about international expansion, supply chain resilience and the practical aspects of entering and operating in Poland.

Read article
current
06.05.2026

Pay transparency 2026 in practice - a meeting for HR and business leaders in Poznań

On 5 May 2026, the meeting “Pay Transparency 2026: legal regulations and a practical case study for HR and business leaders” took place in Poznań. The event focused on preparing organisations for the implementation of new rules on pay transparency and equal pay.

Read article