A Zalesov & Partners Patent & Law Firm

A Zalesov & Partners Patent & Law Firm is a full-service IP law firm that gives IP advice, handles litigation (patents, trademarks and designs) and provides services in patent, design and trademark prosecution before the Russian Patent and Trademark Office and the Eurasian Patent Office.

The firm’s partners have been working as a team in the IP field in Russia for more than 15 years. In 2017 they set up A Zalesov & Partners and strengthened their position in 2018-2020.

Founding partners Aleksey Zalesov and Irina Ozolina have over 20 years of IP protection experience, including representing major international firms in the most sophisticated patent and trademark litigation cases in Russia. The team is known for its very high success rate in patent invalidation and infringement trials (as representatives of both plaintiffs and defendants). Mr Zalesov, who is also the firm’s managing partner, is a seasoned litigator with great experience in high-stake cases.

The firm’s professionals have vast experience in IP law, combining IP litigation and prosecution services into one seamless package that always gives the opportunity to go one step further.

The partners believe that close cooperation between patent and trademark prosecutors and litigators in all stages of the IP work ensures the maximum benefits to their clients and helps secure stable IP rights with the largest possible scope of protection. The team members are keen to give a balanced and verified view in prosecution, always keeping in mind that the main goal of IP prosecution is the ability to enforce the IP rights effectively. The partners’ and other key individuals’ experience enables the team to view all aspects of their clients’ commercial needs and devise the most suitable strategy accordingly. The firm deals with IP enforcement and anti-counterfeiting, having successfully handled numerous court cases in different regions of the Russian Federation; the firm also frequently applies for customs border measures and has significant experience in representing clients before unfair competition bodies. Years of experience conducting IP disputes between leading players in Russia and abroad enable the team to provide clients with the best practical advice on IP protection and enforcement strategy.

The confidentiality of client-attorney information is protected by all possible legal and technical means – not least the fact that all partners are attorneys at law.


The dynamically growing team is formed by known and recommended IP litigators, as well as esteemed and experienced patent prosecutors. To give the clients all-inclusive services in IP protection, the firm can draw on its team members’ qualifications in different fields, with particular expertise in the life sciences, mechanics and applied science. The team’s expertise in invalidation and infringement disputes, along with deep knowledge and skills in different kinds of search, makes A Zalesov & Partners highly qualified to prepare freedom-to-operate and validity opinions – an activity in which the team has deep experience.


The firm handles both international clients’ patent and trademark portfolios (including Madrid System registrations) in Russia and neighbouring countries, including member states of the Eurasian Custom and Economic Union, as well as local clients’ IP portfolios in Russia and abroad. Most of the firm’s clients are well-known multinational companies working in the field of pharmaceuticals, biotech, electronics and food technologies. The firm has been protecting many of these clients’ IP rights for years.

Contact details

A Zalesov & Partners Patent & Law Firm
Marshala Rybalko Street 2
Building 9
Office 535
Moscow 123060

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