Petteri leads demanding trademark and patent infringement disputes, as well as unfair competition disputes. He also advises clients in complex non-contentious issues.
Petteri is the head of our IP team and the Managing Partner of our subsidiary Heinonen & Co, our IP protection arm.
Petteri handles all types of cases related to intellectual property and its protection.
He specialises in demanding legal proceedings concerning industrial rights, and in the preceding conflict management investigations and protection strategies. The typical case handled by Petteri is a complex trademark and patent infringement or, for example, a conflict relating to business secrets or unfair business practices.
Petteri represents numerous Finnish and global companies in all matters concerning industrial rights.
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Petteri’s recent experience includes:
- representing Procter & Gamble in the Market Court against SCA with regard to misleading marketing claims on consumer products
- representing Posti Group Oyj (the national Post Office) against Deutsche Post AG in trademark opposition and infringement case before the OHIM
- advising the Estate of famous composer Jean Sibelius in relation to the commercialization of the JEAN SIBELIUS trademark around the world
- advising a multinational steel manufacturer in a complex core patent ownership matter
- advising global valves manufacturer KSB in retrieving ownership of core patents from third parties in Finland
- representing the Finnish industry scales manufacturer Tamtron Oy in a patent infringement and cancellation action against German company Schenk Process AG in Finland
- representing German herbal liqueur manufacturer MAST Jägermeister AG in various trademark protection strategies and disputes in Finland and the Baltic States (as lead counsel)
- representing a Danish food company Arla Foods against Finnish dairy company Valio Oy in numerous trademark conflicts regarding soft spreads
In addition to his extensive experience in legal proceedings and protection strategies, Petteri has written leading textbooks on trademarks and marketing law as well as several articles in Finnish and foreign publications.
- Koivumäki & Häkkänen, 2010: Markkinointijuridiikka 2010 (‘Marketing law 2010′, rev. editions 2011, 2012 and 2013.)
- Salmi, Häkkänen, Oesch & Tommila, 2001: Tavaramerkki (‘Trademark’, 2nd rev. edition 2008.)
- MPI for Intellectual Property, 2006: Gemeinschaftsmarke und Recht der Mitgliedstaaten (Community Mark and the Laws of Member States.) Section on Finland.
- Partnering Perspectives 2019: "Artificial intelligence in the patenting landscape"
- Articles in Finnish and international publications.
- Petteri is ranked as a Band 2 lawyer in Leading Practitioners in Chambers & Partners.
- Petteri's team in Eversheds Sutherland Finland is ranked Tier 1 in trademark prosecution, trademark disputes, and copyright and related rights; Tier 2 in patent disputes; and Tier 3 in patent prosecution. (Managing IP 2025)
- Petteri is recognized in Gold-band as one of Finland’s top trademark lawyers, described as an “IP all-rounder” and “a brilliant litigator always ready to provide insightful advice”. (Managing IP 2025)
- Ranked in Chambers Europe 2018-2025
- Ranked in Chambers Global 2018-2026
- Eversheds Attorneys Ltd, 2015-
- Attorneys JB Eversheds Ltd, Partner 2014–2015
- Attorneys-at-Law Juridia Bützow Ltd, Partner, 2013–2014
- Attorneys-at-Law Juridia Ltd, Partner, 2008–2013
- Attorneys-at-Law Heinonen & Co Ltd, Partner, 2000–2008
- Keijo Heinonen Ltd, Lawyer, 1999–2000
- Attorneys-at-Law Waselius & Wist Ltd, Associate, 1997–1999
Positions of Trust:
- Member of the Board of IPR University Center Association, 2008–to date
- Vice President of the Association of Finnish Patent Attorneys, 2010–2014 (maximum term)
Memberships:
- Finnish Bar Association
- Association of Finnish Patent Attorneys
- International Trademark Association (INTA)
- European Communities Trademark Association (ECTA)
- The Finnish AIPPI Group
- Member of the Bar, 2001
- LL.M., University of Helsinki, 1997