T  +49 40 82 22 42 - 0
F  +49 40 82 22 42 - 242



Mr. Lahner specializes in (IT-)contract law and IT law as well as e-commerce and data protection law. In addition to the purely legal aspects, Mr. Lahner has many years of experience in advising the management of medium-sized companies always in the context of the relevant departments in the company. This applies to complex contracts as well as IT projects and compliance or data protection management systems. As part of his work, Mr. Lahner has been legally involved in several M&A projects.

In addition, Mr. Lahner advises startups and young companies on the development of terms and conditions and standardized contracts in order to realize their founding or business idea. He also supports companies in implementing the first, necessary steps in the area of data protection and compliance.

  • Education / Professional Experience

    Since 2019

    Lawyer at the business law firm Kolaschnik Partner Rechtsanwälte PartGmbB


    Since 2005

    General Counsel in medium-sized companies with management responsibility for the areas of law & compliance and data protection (IT outsourcing and consulting companies, retail and e-commerce companies), as well as a data protection officer



    Continuous activity as an individual lawyer for small and medium-sized companies, mainly from the IT industry



    Master's degree (LL.M.) in Legal Informatics at Leibniz Universität Hannover and IP / Telecommunications Law at Strathclyde University in Glasgow



    Internship at the Higher Regional Court Celle with position at the Chamber of Commerce in Chennai / India


  • Main Practice Areas / Range of Consulting Topics




    Data Protection Law


    General business law/civil law


    Contract design and contract review (including terms and conditions)


    Advice on compliance matters

  • Presentations / Publications

    Lecturer at trainings, seminars and events


    „Anwendung des § 6 c BDSG auf RFID“, Datenschutz und Datensicherheit 2004