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Dr Norbert Hansen


German Patent Attorney

European Patent Attorney


Norbert Hansen advises and represents major multinational clients on matters relating to national and international patent protection. His professional activities include securing, maintaining, enforcing and challenging patents and utility models, IP portfolio management and employee invention law. A large part of his work is concerned with opposition and appeal proceedings before the European Patent Office.

His specialist fields are chemistry, chemical engineering, material sciences and semi-conductors.

Since 2005
Partner, shareholder and managing director at Maiwald
Since 2003
Lecturer in Intellectual Property at the Faculty of Chemistry and Pharmacy of the Ludwig Maximilian University of Munich
Since 2002
Patent attorney at Maiwald
Patent attorney trainee at Maiwald

Admitted to practice as European patent attorney
Admitted to practice as German patent attorney
Studied law for patent attorneys at the University of Hagen
Doctoral degree in the field of organometallic chemistry from the Technical University of Munich
Studied chemistry at the Technical University of Munich

  • Patent prosecution and portfolio management
  • Filing strategies and drafting patent applications
  • Freedom-to-operate and validity analysis
  • Opposition and appeal proceedings
  • Nullity and patent litigation proceedings

  • Recommended in Handelsblatt | Best Lawyers "Germany's Best Lawyers" 2020, 2021
  • Recommended in IAM Patent 1000 “World’s Leading Patent Professionals” 2019, 2020

  • BGH denies injunctive relief grace period in patent case, Managing Intellectual Property, 12/2016
  • Infringer cannot intervene in reinstatement procedure, Managing Intellectual Property, 03/2016
  • BPatG judges have adequate technical expertise, Managing Intellectual Property, 06/2015
  • Multiple complaints bring higher cost risk for defendant, Managing Intellectual Property, 03/2014
  • Different disclosure standards for novelty and priority, Managing Intellectual Property, 02/2013
  • One person can sue for nullity twice, Managing Intellectual Property, 04/2012
  • Controlled Thermolysis of Nitrido- and Imidomolybdenum Complexes:  A New Route to Phase-Pure Molybdenum Nitrides, Chemistry of Materials, 10/1998
  • Verfahren zur Herstellung aromatischer Nitrile, DE19647795A1, 05/1998
  • Molekulare Katalysatoren für die Ammondehydrierung, Technical University of Munich, dissertation, 1997
  • Verfahren zur Herstellung von Molybdännitriden, DE19620815A1, 11/1997

  • Representation of patentees before the EPO’s Enlarged Board of Appeal in the G1/16 case, where the Board handed down a landmark decision on the allowability of disclaimers in patent claims

  • German Patent Attorney Association
  • epi
  • LES
  • GDCh

  • German
  • English