We combine competences from various disciplines

Legal services and business consulting

About us

CERTO Kancelaria Prawna, M. Janowicz-Stradomska i Wspólnicy Spółka komandytowa, is a relatively young, rapidly growing business entity. It was set up in the middle of 2010 after the transformation of the solo-practice of Marta Janowicz-Stradomska, legal counsel, and its merger with other entities. The law firm continues previous activities and introduces completely new elements of legal and business solutions for our Clients.


Professional level of services rendered by the Certo Law Firm is guaranteed by the team having highest professional qualifications, long-standing experience gained while providing services for large companies, in particular in the telecommunications, energy, pharmaceutical and real estate industries, as well as for many public institutions.



Our lawyers also have legislative experience, practice in courts of general jurisdiction, administrative and arbitration courts as well as in the conduct of proceedings before the President of URE (Energy Regulatory Office), the Patent Office of the Republic of Poland and the National Chamber of Appeal (KIO), etc.. They provide training for business entities and are authors of publications, studies and presentations from various fields of law.


We are also supported by high-class specialists in the provision of niche services for business, in the areas such as accounting, tax and financial advisory, translation, marketing and PR consultancy, management and restructuring of enterprises and highly-specialised technical audits of real property.




  • Marta Janowicz-Stradomska

    - legal counsel, founder and managing partner at the Certo Law Firm Kancelaria Prawna – M. Janowicz-Stradomska i Wspólnicy Sp. Kom.

  • Specialist in:

    • corporate law including ongoing and comprehensive legal services provided for the companies and their governing bodies, including transformations, mergers, acquisitions and liquidations;
    • real property law including real property trading and administration, implementation of building investments, including investments in energy industry and investments in the public sector, at all their stages;
    • TMT (Technology Media Telecommunications) - legal services in the field of electronic commerce, intellectual property and new technologies, legal protection of information, etc.;
    • pharmaceutical and medical law (including but not limited to the context of performance of permitted marketing and PR activities - implementation of audiovisual programmes and events as well as press releases; proceedings for damages in relation to the participation in clinical trials).


    Her professional experience encompasses ongoing legal-administrative service of investment funds related to real property trading and large companies from the following sectors: FMCG, energy, telecommunications, pharmaceutical and many others. She provides corporate services, conducts employment-related, compensation, administrative cases and court disputes arising from the performance of various trade contracts and public procurement contracts. She provides legal consulting services in relation to the preparation of the investment for implementation, including audits, formation and negotiation of contracts, legal services in the field of intellectual property, new technologies, competition law etc.. She has considerable experience in cooperation with clients, service providers, courts and national administrative authorities. She is engaged in business support, planning, preparation of due diligence, reports and feasibility study, internal regulations and presentations. She carries out mergers and amalgamations of business entities. She draws up, evaluates and negotiates agreements.


    She is the author of monographs in the field of electronic signature infrastructure, use of new technologies and electronic commerce. She has participated in the work of the parliamentary subcommittee preparing the Act on Electronic Signature. She conducts a lot of training sessions and presentations, and is the author of publications on sustainable development in the building industry and implementation of real property and construction investments.



  • Experience:

    • Lawyer in the National Bank of Poland and in leading law firms;
    • In-house lawyer holding managerial and independent positions in renowned international companies, including one of the most famous global pharmaceutical groups, major telecommunications company and in a leading company in the business ‘yellow pages’;
    • Partner at the Certo Law Firm Kancelaria Prawna – M. Janowicz-Stradomska i Wspólnicy sp. kom.




    Faculty of Law and Administration at the University of Warsaw;

    British Centre for English and European Law at Warsaw University in association with Cambridge University;

    Legal traineeship for legal counsels;

    Postgraduate studies in the field of management at Kozminski University Education:



  • Krzysztof Jacek Woś

    - legal counsel, Affiliate Partner at the Certo Law Firm Kancelaria Prawna - M. Janowicz-Stradomska i Wspólnicy Sp. kom.

  • Specialist in:

    • civil law;
    • administrative law;
    • labour law;
    • public procurement law;
    • lawsuits and debt collection


    Professional career of Krzysztof Woś encompasses up to now legal services provided for public authorities and offices of public administration. It covers matters of administrative law, civil law, including public procurement and labour law. The activities are mainly focused on legal services related to real estate and on public procurement of IT branch (he has prepared agreements for the purchase of voting service system in the Parliament of the Republic of Poland and two outsourcing agreements of IT services for deputies’ local offices). Within the confines of services provided, the activities performed in the field of legislation should be stressed; they include evaluation of drafts of legal acts falling within the scope of the so called inter-ministerial arrangements and preparation of drafts of internal legal acts (regulations, resolutions and decisions). Moreover, he provides legal services on the basis of civil-law agreements for the Polish Chamber of Commerce and natural persons.


    The author of numerous legal opinions, he has represented the entities he cooperates with in court proceedings and in front of other public authorities, including in the Supreme Court, the Supreme Administrative Court and the Polish Constitutional Tribunal;


    The author of a book: “Kancelaria Sejmu. Zadania, struktura, funkcjonowanie”. Warszawa 2010, ISBN 978-83-7666-032;

    A member of the Polish Legislation Society, the Polish Tourist Country-Lovers’ Society and the Scouting Association of the Republic of Poland, (1999-2001 Secretary General).




  • Professional experience:

    • Employee and associate of commercial companies;
    • Legal counsel to the Chancellery of the Polish Sejm, Civil Service Office and Polish National School of Public Administration;
    • Deputy director in the Chancellery of the Prime Minister;
    • Partner at the Certo Law Firm Kancelaria Prawna – M. Janowicz-Stradomska i Wspólnicy sp. kom.




    • Faculty of Law and Administration at the Nicolaus Copernicus University;
    • Parliamentary (administrative) legal training organised by the Chancellery of Sejm;
    • Legal traineeship for legal counsels at the District Chamber of Legal Counsels in Toruń;
    • Postgraduate studies in the field of management at Kozminski University.
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    Business partners:

    Our experience has shown that comprehensive solutions to support our customers' business activity, including multilevel legal assistance and advisory, as well as business consulting are the most effective.


    Development, security and elimination of risks of our Clients and of the Law Firm also comprise our internal business relationships, building of a trusted team of people and entities who/which we can fully rely on, whose services, as compatible and complementary with ours, can be recommended by us with complete confidence about their quality and reliability.



    Lingualex is a language centre created in order to teach and assist lawyers, law firms as well as companies and institutions. Our mission is to render comprehensive training, translation and interpreting services related to legal language. Lingualex has cooperated with inter alia TVN S.A., RWE Polska S.A., Warsaw Stock Exchange, Deloitte, Lovells, IVG, Eiffage Budownicto Mitex and many others.

    Creation of such a little customised shared service centre causes that we are prepared not only to provide services on current legal issues, but also to work in a much wider, fuller dimension. We have the possibility to combine competences and to cooperate with many specialists, who offer niche business services.









    Accounting Office with many years of experience in bookkeeping. It deals with the settlement of various entities from single economic activities to large commercial companies. It provides assistance in the establishment of companies and offers special care throughout the first months of their operation. The advantages of the Office include qualified personnel, experience in conducting complex settlements and individual approach to each Client.

    We are supported by:




    The Certo Law Firm provides legal and business consulting services for a good deal of Polish and foreign economic entities, representing most of the leading industries, including inter alia, those from the following sectors ”financial, telecommunications, IT, energy, pharmaceutical, real property, construction, BPO and others.


    We have already gained experience while working for the companies such as:


    • Roche Polska Sp. z o.o.;
    • LG Polska SP. z o.o.;
    • Elektrobudowa S.A.;
    • VIA SMS PL SP. z o.o.;
    • Akron Group Immobilien-Investment GmbH;
    • TP Internet Sp. z o.o.;
    • International Venture Partners Ltd.;
    • Paymax Sp. z o.o.;
    • Heitman Polska Sp. z o.o.

    The Certo Law Firm supports family businesses. It has been a patron of  the Family Business Ranking organised by the weekly news magazine Newsweek. We see the potential of enterprises, which historically and actually form the basis of business around the world. We are proud that we belong to a trusted team of specialists creating this specific type of business activity.


    • A Alzheimer Zbigniew Lasota;
    • PPHU WITPOL Bożena Zakierska;
    • Apteka św. Marka Marek Morusiewicz;
    • i.D. Media Agencja Prasowa Ilona Adamska;
    • Piotr Majchrzak – prywatny inwestor.

    Our portfolio includes both the largest companies from particular sectors and industries, as well as those which are just starting their business and development. We assist all of them to expand. Each Client is unique and the most important for us. Balance and steady growth of your Business Activities is an indicator of our success.


    Thank you for your trust and recognition.


    Join us :

    The Certo Law Firm relies both upon professionalism and subject-matter knowledge and upon innovative and bold solutions. Invariably such solutions contribute to quick and effective achievement of all the desired objectives of our Clients and ours


    Therefore, we invite you to join us if:


    • your Business is interested in cooperation  OFFER
    • your Business is interested in being our  BUSINESS PARTNER
    • you are interested in work in our  TEAM

    All who want to do student and legal trainee practice at the Certo Law Firm are invited to submit applications – CVs with covering letter and a clause on consent for personal data processing to the e-mail address:


    The next recruitment process for practice are foreseen for September 2014;




    • you want to visit us and ‘like’ us at Facebook
    • you want to make a contact with us at Linkedin

    Copyright © 2010-2020 Certo Kancelaria Prawna M. Janowicz-Stradomska i Wspólnicy Sp. kom.
    November 2020