Hanno Kaiser is a US and EU antitrust lawyer with a focus on complex transactions and conduct investigations in high-technology industries, specifically the overlap of antitrust, privacy, and intellectual property.

Mr. Kaiser has represented clients in merger and conduct matters before the Federal Trade Commission, the US Department of Justice, the European Commission, the German Federal Cartel Office, the Korean Fair Trading Commission (KFTC), SAMR and other agencies around the world, as well as in civil antitrust and IP litigation.

Mr. Kaiser is particularly experienced in antitrust matters involving complex transactions, big data, privacy, and intellectual property issues, including standard setting and patent pools.

Mr. Kaiser's clients include:   

  • Facebook
  • Broadcom
  • Airbnb
  • Cision
  • ZF Friedrichshafen
  • LogMeIn
  • Lineage
  • Tencent

Mr. Kaiser's experience includes advising:

  • Lineage Logistics in its acquisition of Cryo-Trans
  • Segment.io in its US$3.2 billion acquisition by Twilio
  • Tencent on the merger between Huya and DouYu
  • CPA on its US$6.8 billion combination with Clarivate
  • ZF Friedrichshafen in its US$7 billion acquisition of WABCO
  • Apollo in its US$2.7 billion acquisitions of Shutterfly and Snapfish, as well as their subsequent combination
  • Honey Science Corporation in its US$4 billion sale to PayPal
  • Facebook in a variety of matters
  • Pivotal Software in its US$2.7 billion sale to VMware
  • Cision Ltd. in its US$2.7 billion sale to Platinum Equity
  • Globe Specialty Metals in its US$3.1 billion sale to FerroAtlantica
  • WhatsApp in its US$21.8 billion sale to Facebook
  • National Semiconductor in its US$6.5 billion acquisition by Texas Instruments
  • Oracle Corporation in its US$7.4 billion acquisition of Sun Microsystems   

Thought Leadership

Mr. Kaiser is a frequent speaker on antitrust and technology topics. From 2009-18 he was an adjunct professor for antitrust at UC Berkeley, Boalt Hall School of Law. For additional background see www.hannokaiser.com.

Bar Qualification

  • California
  • New York
  • Rechtsanwalt (Germany)


  • Dr. iur., University of Bonn, 1998
  • LLM, University of California, Davis School of Law, 1998
  • Second German State Exam, Duesseldorf, 1996
  • First German State Exam, University of Bayreuth, 1994

Languages Spoken

  • English
  • German