Consumer and Marketing Law

Consumer and Marketing Law

We provide comprehensive support to our clients on consumer and marketing law issues throughout the entire lifecycle of their products and services.

Our team of specialists offers expert advice on a wide array of matters, including product and service launches, labelling, contractual terms, marketing and customer relationship practices, liability for defects, product liability, warranties, and recalls.

We represent clients before the Consumer Disputes Board and in supervisory measures of the authorities related to consumer and marketing law. We also specialise in consumer and marketing litigation across a range of industries. In addition, we support our clients in assessing and handling wide-ranging and fundamentally significant customer complaints from individual consumers.

Our extensive experience also covers the legal aspects of environmental and sustainability claims, greenwashing, social media, competitions and prize draws, audiovisual content services, apps, loyalty programs, consumer credits, comparative advertising, and unfair business practices.

Latest references

We acted as legal adviser to Efima Oyj in its acquisition of the entire share capital of Sparta Consulting Oy, a leading data management consulting firm. The acquisition strengthens Efima’s position as a strategic development partner for large and medium-sized enterprises and supports the company’s growth strategy and ability to meet the growing demand for intelligent, data-driven business solutions. Founded in 2012, Sparta Consulting specialises in comprehensive information management, and its clients are primarily large Finnish companies in the banking and insurance, energy, and telecommunications sectors. Efima Oyj is a Finnish digital company that promotes the growth of large and medium-sized enterprises by streamlining and automating business processes and creating competitive advantage through innovative use of artificial intelligence and data. The company has over 250 experts in Helsinki and Tampere.
Case published 3.6.2025
We are advising DNA Plc in brand protection and intellectual property enforcement matters globally. Our intellectual property team manages DNA’s global trademark portfolio, including registration, prosecution, opposition and enforcement. We also advise DNA in questions concerning consumer and marketing law, unfair competition, social media, domain names and cybersquatting. DNA Plc is one of Finland’s leading telecommunication companies. DNA offers connections, services and devices for homes and workplaces, contributing to the digitalisation of society. The company has approximately 3.7 million subscriptions in its fixed and mobile communications networks. In 2024, DNA’s total revenue was EUR 1,100 million, and the company employs about 1,600 people around Finland. DNA is part of Telenor Group.
Case published 7.5.2025
We advised WithSecure Corporation in the sale of its cybersecurity consulting business to Neqst. WithSecure is a global cyber security company (listed on NASDAQ OMX Helsinki). Neqst is a Swedish investment firm, focusing on technology companies. The closing of the transaction remains subject to customary conditions and regulatory approvals.
Case published 24.1.2025
We assisted Smarter Contracts Ltd in the process where the Finnish Transport and Communications Agency Traficom confirmed it to be an EU-recognised data intermediation service. Non-EU companies must have a legal representative in some EU country so that they can offer data intermediation services in accordance with the Data Governance Act. Smarter Contracts is based in Great Britain and selected Finland for the task. Smarter Contracts is the first non-EU data intermediation service registered by Traficom. Wayne Lloyd, Founder & CEO of Smarter Contracts, remarked:  The support from the Castrén team was exceptional from start to finish. Pioneering new territory is never without its challenges, and as the first non-EU data intermediation service provider, we faced significant legal uncertainties. Despite these complexities, the Castrén team expertly guided us through each step with remarkable efficiency, providing the certainty we needed. Smarter Contracts leverages its proprietary Pulse Permissions Protocol® to deliver advanced consent and access rights management services. This milestone highlights Castrén & Snellman’s proficiency in navigating intricate regulatory landscapes, whilst recognising the relevance of Smarter Contracts’ innovative approach to secure, compliant data management.
Case published 11.12.2024