Katarzyna Menszig-Wiese LL.M., PhD

Attorney-at-lawManaging Associate


Competition and consumer law expert with over 10 years of professional experience. Advises domestic and foreign entities in particular with regard to issues concerning the organisation of distribution systems, abuse of dominant position, payment gridlocks and various aspects of consumer law, including greenwashing. Supports clients in proceedings before the President of the Office of Competition and Consumer Protection. Analyses contracts, internal policies and regulations in terms of competition and consumer law. Provides consultation on complex matters requiring not only expert knowledge but also business acumen.

Has experience working with entities in industries such as media, food, energy, e-commerce and automotive.

Gained professional experience during a Blue Book traineeship at the European Commission in Brussels.

Actively pursues academic research (author and editor of a commentary on the Act on Prevention of Excessive Delays in Commercial Transactions). Guest lecturer on issues at the intersection of competition law and new technology law.

Recommended in the Legal 500 EMEA 2021, 2022, 2023 and 2024 rankings in the Competition/Antitrust area.

PhD in legal science from the Jagiellonian University in Cracow, LL.M. graduate of the University of Heidelberg, attorney-at-law registered at the Regional Bar Council of Attorneys-at-Law in Cracow.

Fluent in English and German.

Related news

News 1
27 Mar 2024

The Legal 500 (Legalease) EMEA 2024

We are proud to share that Traple Konarski Podrecki & Partners has been recognized in 5 practice areas by The Legal 500 (Legalease) EMEA 2024!

Blog 11
12 Apr 2024

Severe penalties for collusion in the electronic monitoring equipment market

The President of the Office for Competition and Consumer Protection (UOKiK) announced the imposition of fines amounting to more than PLN 37 million for alleged price collusion and market sharing. The importer of a well-known brand of electronic monitoring equipment, several of its distributors, and seven managers were sanctioned.

15 Dec 2023

Consumer law: AI is reviewing your contract templates online right now

At the end of September, the CJEU delivered a ruling stating that where the wording of a provision in a consumer agreement template is equivalent to that of a clause listed as an abusive clause in the register of abusive clauses, this is by itself grounds for invalidation of that provision. This argument, which incidentally has caused some controversy, is no small matter for traders that enter into agreements with consumers. Since the beginning of 2023, the President of the Office of Competition and Consumer Protection (UOKiK) has been using AI to perform searches for abusive clauses. The AI tool used by UOKiK has learnt to red-flag contractual clauses, using the information in the register of abusive clauses and other sources.

13 Sep 2023

Limits on a non-compete clause in a franchising agreement: looming risks for franchisors

In midsummer, a new legislative proposal concerning franchising agreements emerged, causing concern for many franchisors. Although some of the most controversial ideas were dropped, the final version of the bill does not seem to recognize the risks involved in limiting the use of non-compete clauses in such agreements.

08 Jun 2023

Will the President of the Office of Competition and Consumer Protection (UOKiK) provide support in the pursuit of claims for breach of competition law?

Although the Act on Private Enforcement of Competition Law has been in force in Poland for almost six years, cases of this kind are only now gaining momentum. The Polish competition authority recently, somewhat unexpectedly, made a statement that may encourage victims to take legal action.

02 Mar 2023

The risks connected with shifting the moment an agreement is concluded: why Amazon is facing fines for breaching consumer rights in Poland

The latest enforcement activities of the Polish Office of Competition and Consumer Protection (UOKiK) have proven yet again that UOKiK does not shy away from investigating and bringing charges against the major market players. Last month, the authority announced it was bringing charges against Amazon EU SARL.

20 Dec 2022

Tip for doing business in Poland – respect consumer protection rules!

When launching a service in a new jurisdiction, it is advisable to double-check compliance with consumer protection rules. Some countries might have a more stringent approach to certain issues than others. This is exactly the case in Poland. The local competition authority (UOKiK) sees consumer protection as a priority, and does not shy away from enforcing the law in cases where – in its opinion – contracting terms do not live up to the expected standard.

25 Oct 2022

Conditions for respecting warranties under scrutiny by the Polish Competition Authority

Certain motor vehicle importers who trade in well-known models in Poland have changed their approach toward automobile repairs under warranty as a consequence of the activities of the Polish Competition Authority (UOKiK).

29 Jul 2022

Dominant or not, you need to be super-cautious in the food supply chain!

The use of unfair trade practices in the food supply chain is banned throughout Europe. Meanwhile, Poland was at the forefront of enforcement even before directive (EU) 2019/633[1] was passed by the European legislator. Thus it comes as little surprise that the Polish competition authority (UOKiK), which is the competent authority for monitoring compliance with these rules, takes an exceptionally stringent approach.

27 Jul 2022

Advertising of dietary supplements: the more charges, the harsher the penalty?

At the end of April, the President of UOKiK announced initiation of proceedings for practices infringing the collective consumer interest against a trader dealing in dietary supplements. The list of allegations is considerable. And for each of these — under a new debatable fining method — the authority can impose a separate severe financial penalty.

26 May 2022

IT providers beware! A new antitrust enforcement trend is looming!

The Polish Competition Authority (UOKiK) has announced the launch of exceptional antimonopoly proceedings against cartel facilitators. The authority claims to have gathered evidence that the undertakings, which are IT providers, facilitated an anticompetitive agreement between pharmaceutical wholesalers by providing them with IT tools. Allegedly, these tools enabled the wholesalers to exchange sensitive business information, for example on prices and rebates, to the detriment of fair competition.

18 May 2021

Vertical restraints under UOKIK scrutiny

Recently there has been a visible surge in the number of antitrust cases regarding various vertical agreements between undertakings on the Polish market. Anticompetitive practices of this kind are often scrutinized by the Polish Office of Competition and Consumer Protection (UOKiK). What these cases have in common is the fact that the restrictions imposed on distributors concern their online business activity.

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