Patent infringement and validity litigation, including opposition and appeal proceedings before the German Patent and Trademark Office and the European Patent Office as well as national revocation proceedings before the German Federal Patent Court and the German Federal Supreme Court. His technical fields of expertise are medical devices, telecommunications and the automotive industry.

Johannes Heselberger has successfully conducted important patent infringement proceedings, often across national borders, for client companies of various sizes that are world leaders in their technology.

Recommended in:

Chambers Global 2013: noted by peers as “one of our greatest competitors” 
IAM Patent 1000 - 2012: “covers all the angles, has incredible depth of erudition and follows through with great enthusiasm”
Who's Who Legal - Germany 2012: „high quality“ disputes work (peer quote)
JUVE German Commercial Law Firms 2011/2012
The International Who’s Who of Business Lawyers (Who’s Who Legal) – Patents 2011
Chambers Europe 2012: a "knowledgeable and always well-prepared lawyer and patent attorney"
Chambers Europe 2011
Chambers Global 2011
JUVE German Commercial Law Firms 2010/2011
Guide to the World's Leading Patent Law Practitioners (MIP) 2010
MIP Handbook 2010
Best Lawyers 2012
Chambers Europe 2010
JUVE German Commercial Law Firms 2009/2010
JUVE German Commercial Law Firms 2008/2009: "excellent patent attorney and attorney-at-law"