Hilma-Karoliina Rozell

Counsel, Member of the Finnish Bar

I specialise in consumer and marketing law as well as intellectual property rights, with in-depth experience across sectors ranging from luxury goods to energy.

I regularly advise clients on consumer protection legislation and marketing law, including green and sustainability marketing, and support them in dealings and negotiations with consumer authorities on these matters. I also represent clients in regulatory monitoring processes, before the Consumer Disputes Board, and in consumer protection litigation across various industries.

I particularly enjoy advising clients on industrial property rights and copyright — a well-branded, insightfully marketed product never fails to make me smile. With over 10 years of experience commercialising and enforcing intellectual property rights, I also have particular expertise in matters concerning breaches of good business practice and trade secrets.

I am an active speaker and author in the fields of marketing and consumer law and recently published a book on the subject.

I have been named a Rising Star in intellectual property rights in Finland multiple times by the international ranking Managing IP.

Latest references

VR-Group Plc is a transport and logistics group owned by the Finnish State, operating passenger and freight rail transport in Finland with activities also in the Swedish market. VR Group provides passenger, logistics and maintenance services with over 160 years’ experience in developing responsible transport of the future. We advise VR Group in intellectual property matters as part of the company’s wider brand protection efforts. Our assignments have included advice on copyright, design rights and trademarks, focusing on the protection of the company’s visual identity – including its distinctive green colour – in connection with transport services as part of a comprehensive IP protection strategy. VR Group’s consistent brand building has also received recognition, including the Finland Chamber of Commerce’s Brand of the Year award in 2026. In the competition, brands were viewed comprehensively from various perspectives, including their story, strategic role, brand renewal ability and intellectual property protection. The jury found that VR had understood the importance of the protection of its brand as part of a comprehensive business strategy. 
Case published 9.9.2026
We represent the Tactic Games Oy, a leading international developer and manufacturer of board games, as lead counsel in its global brand protection, EU-wide customs enforcement and trademark disputes concerning the famous MÖLKKY trademark. MÖLKKY is an award-winning outdoor game marketed and sold in Europe, Australia, USA and Canada. The Tactic Games Oy has been the exclusive distributor of the MÖLKKY game since 2010, and it purchased the manufacturing and intellectual property rights for the game from Lahden Työn Paikka Oy in January 2017. Tactic’s product portfolio includes also other well-known games, such as Kimble, Alias and iKNOW.
Case published 15.1.2026
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 are advising Oomi Oy in a business transaction whereby KSS Energia Oy’s consumer and business customers in the retail sale of electricity will be transferred to Oomi. The transfer is scheduled to take place in March 2025. The arrangement requires approval from the Finnish Competition and Consumer Authority. Oomi Oy is one of the largest energy service companies and electricity sellers in Finland. The arrangement is a result of the recent development of the electricity market and Oomi’s strategy, which aims to offer customers a seamless and improved digital customer experience.
Case published 20.12.2024
We acted as Finnish counsel to Pernod Ricard in the sale of a portfolio of local Nordic brands to Oy Hartwall Ab, an affiliate of the Danish group Royal Unibrew. Pernod Ricard is a worldwide leader in the spirits and wine industry. The local portfolio of brands includes spirits, liqueurs and Finnish wine brands, the best-known being the liqueur Minttu, along with their related production assets based in Turku, Finland.
Case published 21.10.2024
We are acting as Finnish legal advisor to KLP Vermögensverwaltungs in a combination of its German subsidiary MVC Mobile VideoCommunication with Elisa Videra, a subsidiary of Elisa Corporation, through a share swap. KLP Vermögensverwaltungs will have a 62.5% holding and Elisa Corporation a 37.5% holding in the combined MVC Videra. The transaction is subject to authority approval in Finland and the estimated closing is in December 2023. In 2023, MVC Videra’s combined turnover is expected to be around EUR 45 million with a total of around 150 employees.
Case published 6.11.2023
We are advising Oomi Oy in questions relating to electricity market legislation, consumer protection and marketing law. Oomi is one of the largest electricity sales companies in Finland. The company sells electricity contracts, solar power systems and electric car charging solutions to consumers and businesses.
Case published 19.6.2023
Valio is a food company with the courage to change with the times. Valio’s road to growth and towards the innovative transformation of the food industry is supported by its long-standing business law partner, Castrén & Snellman. Juha Hölttä became Valio’s General Counsel at a time when the company kicked its new strategy into a higher gear. ‘In the past two years we have made several significant market initiatives and expanded our business from food production to other areas of the value chain. By acquiring Heinon Tukku, we now provide a new kind of added value to restaurants and professional kitchens through our Valio Aimo ® wholesale business. And our joint venture with St1, Suomen Lantakaasu Oy, will enable us to reach our goal of turning manure into biogas for heavy transportation,’ Hölttä describes some of the milestones of the new strategy. In addition to expanding into new business areas, Valio continues to build a more sustainable dairy business alongside seeking international growth from plant-based products. Valio has invested in the international growth of its Oddlygood ® brand through incorporation and gained additional product development expertise through the acquisition of Gold&Green. Carbon footprint of milk reduced by new business operations Dairy products are at the core of Valio’s business, and the company develops this strong foundation not only through product innovation but also at the beginning of the food chain. ‘Who could have foreseen that dairy farm manure could become one way of tackling climate challenges? Our planned biogas plants will use manure and agricultural by-products to produce renewable liquefied biogas for use as transportation fuel,’ says Hölttä. ‘Valio is aiming for a carbon-neutral milk chain by 2035. We are making major reforms in our operations in order to make this happen.’ The sustainability programme for Valio’s 3,700 dairy farms has been expanded, and it now includes the preventive and systematic healthcare of cows as well as actions related to grazing, the climate and biodiversity. ‘Appreciation for locally produced food is on the rise, which means that sustainability questions are local as well. This is a good trend, as it makes it easier for us to make a difference.’ ‘Strategic help even in difficult circumstances’ The service-mindedness of lawyers is key in implementing a growth strategy. Castrén & Snellman Attorneys is a long-standing partner of Valio, and the relationship between the two is tight. ‘At Valio, we are always exploring new business opportunities, and us lawyers are tasked with assessing these opportunities. My philosophy as the General Counsel is that my door is always open. Together we can evaluate how to solve and implement new initiatives. In this job, you must be curious, broad-minded and business-oriented,’ summarises Hölttä. Hölttä’s legal team of five people is supported by experts from Castrén & Snellman. The key to successful partnership is that both parties are familiar with each other’s business operations and ways of working. ‘Castrén & Snellman knows us well, and they maintain an up-to-date overview of our situation, which I highly appreciate. It means that we are able to tackle tricky situations together quickly even in difficult circumstances.’ A joint fast reaction was needed, for example, when Valio exited the Russian market after the country launched its war of aggression on Ukraine. ‘The responsible thing was to leave quickly but in a controlled manner and by repatriating our investment as opposed to leaving an operational food production facility in the hands of a country that was waging war.’ A shared vision of sustainability Valio – Together we make life better A Finnish food company Approx. 4,600 employees Owned by 13 Finnish dairy cooperatives Finland’s most sustainable brand in the Sustainable Brand Index study Read more about sustainability at Valio Castrén & Snellman – Building sustainable success stories Forerunner of demanding legal services 300 employees Owned by its partners ‘We help our clients build sustainable success stories and achieve their sustainability goals.’ Read more about sustainability at Castrén & Snellman Shared success stories of Valio and C&S Global Brand Portfolio Management and IP Enforcement Purchase of Gold&Green’s Brand, IPR and R&D Function Joint Venture for Biogas Production with St1 Sale of Russian Operations Acquisition of Heinon Tukku Significant Growth Funding Round Competition Damages Case Defending Against Environmental Permit Challenge at the Appellate Level
Case published 4.5.2023