Patent Attorneys

Patent litigation in Germany and France;  German and European patent opposition and appeal proceedings; patent invalidation proceedings before the German Federal Patent Court and the German Federal Court of Justice; patent prosecution before the patent offices.

Johannes Lang’s particular technical focus is on software and computer-related inventions, electronics, information technology and telecommunications, semiconductor memories, digital image and audio processing, audio-video devices, smart cards and medical devices.

Johannes Lang is regularly involved as lead patent attorney in complex international patent litigation in Germany and Europe, particularly in cases requiring coordination with parallel US litigation or litigation in other European countries. Johannes Lang represents in patent litigation major global companies in the fields of computer technology, data compression, GSM and 3G telecommunication standards and smart cards.

Being a qualified French patent attorney, Johannes Lang is also experienced in French patent litigation procedure and in particular in French discovery proceedings ("saisie-contrefaçon").  


Recommended in:

Chambers Europe 2014

Chambers Global 2014

IAM Patent 1000 - 2014:
“Johannes Lang ‘can navigate the trickiest briefs with finesse’”

JUVE German Commercial Law Firms 2013/2014

Managing IP 2014

The Legal 500 Deutschland 2014:
“Unter den Patentanwälten [sticht] […] besonders […] Johannes Lang hervor”

The Legal 500 EMEA 2014

Chambers Europe 2013:
“He is regularly involved in complex patent litigation in Germany and Europe, requiring coordination with the US or European countries”

JUVE German Commercial Law Firms 2012/2013

IAM Patent 1000 - 2012:
“immediately puts everyone at ease with German patent law and procedure”

Managing IP Handbook 2013

Chambers Europe 2012

Managing IP Handbook 2012

Chambers Europe 2011

The World’s Leading Patent Litigators 2011 (IAM 250):
“highly respected for his great technical ability, meticulous attention to detail and deep knowledge”

Managing IP Handbook 2010:
“is excellent and an expert with software matters”

Best Lawyers 2014

Best Lawyers 2013

Best Lawyers 2012

Best Lawyers 2011

Best Lawyers 2010

Best Lawyers 2009



“IP Awards 2005” by the law journal “Patent World” in the category of “Best achievement in patent litigation” for his work concerning a protracted multinational patent conflict relating to a technical standard for semiconductor technology.



Scientific assistant at the University of Karlsruhe, Germany, and at CNRS Lyon, France, in the fields of microprocessor design and digital image processing


RENAULT SA, Paris, France; Technical assistant of the Head of the car body production automation division


Patent attorney clerkship with BARDEHLE PAGENBERG, Munich


Resident partner in the Paris office of BARDEHLE PAGENBERG


Trainee with Chinese patent law firm in Shanghai, China


Trainee with Japanese patent law firm in Osaka, Japan


Trainee with US patent law firm in Menlo Park (CA), USA

Since 1999

Partner of the firm


Managing Partner of the firm



Studies of Electrical Engineering at Technical University of Karlsruhe, Germany; degree of Dipl.-Ing. (Master of electrical engineering)


Exchange Scholarship at I.N.S.A. (Institut National des Sciences Appliquées), Lyon, France


Legal studies at the University of Hagen, Germany


Admitted to the German Bar of Patent Attorneys


Legal studies at Université Robert Schuman (CEIPI), Strasbourg, France; Diplomé en brevet d'invention (CEIPI)


Admitted as European Patent Attorney


Registered as a qualified person before the French Patent Office (INPI)


German, English, French

Johannes Lang is chairman of the Software Patent Committee of the German Patent Bar Association, and member of the IPO Software and Business Methods Committee. He is lecturing patent infringement law at the Kurt Härtel Institute of Hagen University and regularly lectures and publishes, in particular in the field of software patents. He is co-author of "Concise European Patent Law", a commentary on European intellectual property legislation.

German Patent Lawyers Bar: Chairman of computer-software committee
IPO (Intellectual Property Owners Association):
Software and Business Method Committee

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