Lothar Determann

Baker & McKenzie LLP


Lothar Determann has been assisting companies take products, business models, intellectual property and contracts global for nearly 20 years. He advises on data privacy law compliance, information technology commercialization, copyrights, open source licensing, electronic commerce, technology transactions, sourcing and international distribution at Baker McKenzie in San Francisco & Palo Alto. He is a member of the Firm's International/Commercial Group and the Global Privacy & Information Management Working Group.

Lothar has been a member of the Association of German Public Law Professors since 1999 and teaches Data Privacy Law, Computer Law and Internet Law at Freie Universität Berlin (since 1994), UC Berkeley School of Law (Boalt Hall, annually since 2004), Hastings College of the Law (since 2010), Stanford Law School (2011) and University of San Francisco School of Law (2000-2005). He has authored more than 100 articles and treatise contributions as well as 5 books, including Determann’s Field Guide to Data Privacy Law (2nd Edition, 2015) and California Privacy Law - Practical Guide and Commentary (2016).

Practice Focus

Dr. Determann's practice is focused on Information technology, data privacy, copyrights, commercial law.

Representative Legal Matters

  • Counsels E-commerce and Internet companies on various international and domestic business and compliance matters.
  • Assists companies with establishing and maintaining data privacy and security compliance matters.
  • Advises on data security breach incidents and responses.
  • Assists more than 100 US companies with the establishment and maintenance of electronic waste compliance schemes and product compliance regimes under U.S., European, Chinese and other countries’ laws (WEEE, RoHS, CE marking, REACH, conflict minerals, Prop 65, etc.).
  • Advises major technology companies, start-ups and non-profit organizations regarding the use and release of open source software products and related business model and compliance matters.
  • Provides strategic advice and contract localization assistance with respect to technology license and distribution contracts (formation, electronic contracting, termination, disputes, franchise laws, competition law matters) around the world.
  • Supports and guides technology companies, manufacturers and service companies with expanding their business globally, including guidance regarding business models, entity formation, strategic contracts and compliance matters.


  • California~United States (2000)
  • Frankfurt/M.~Germany (1998)


  • Free University of Berlin (Habilitation) (1999)
  • State of Berlin (Second State Exam) (1997)
  • Free University of Berlin (Dr. iur.) (1996)
  • State of Berlin (First State Exam) (1994)
  • State of Bavaria (Publicly Certified Banker) (1990)


  • English
  • French
  • German

Previous Offices

  • San Francisco