Christian Helmers

Best Publications

• The Choice between Formal and Informal Intellectual Property: A Review

  Bronwyn H. Hall;Christian Helmers;Mark Rogers;Vania Sena

  716
  Citations

• DO SPILLOVERS MATTER WHEN ESTIMATING PRIVATE RETURNS TO R&D?

  Markus Eberhardt;Christian Helmers;Hubert Strauss

  378
  Citations

• Innovation and diffusion of clean/green technology: Can patent commons help?

  Bronwyn H. Hall;Christian Helmers

  299
  Citations

• Innovation and the Survival of New Firms in the UK

  Christian Helmers;Mark Rogers;Mark Rogers

  256
  Citations

• Does patenting help high-tech start-ups?

  Christian Helmers;Mark Rogers;Mark Rogers

  211
  Citations

• The role of patent protection in (clean/green) technology transfer

  Bronwyn H. Hall;Christian Helmers

  208
  Citations

• The importance (or not) of patents to UK firms

  Bronwyn H. Hall;Christian Helmers;Mark Rogers;Vania Sena

  203
  Citations

• Do board interlocks increase innovation? Evidence from a corporate governance reform in India.

  Christian Helmers;Manasa Patnam;P. Raghavendra Rau

  195
  Citations

• Patent litigation in Europe

  Katrin Cremers;Max Ernicke;Fabian Emil Gaessler;Dietmar Harhoff

  171
  Citations

• Untested Assumptions and Data Slicing: A Critical Review of Firm-Level Production Function Estimators

  Markus Eberhardt;Christian Helmers

  128
  Citations

• The formation and evolution of childhood skill acquisition: Evidence from India

  Christian Helmers;Manasa Patnam

  119
  Citations

• Technology entry in the presence of patent thickets

  Bronwyn H. Hall;Christian Helmers;Georg von Graevenitz;Georg von Graevenitz

  111
  Citations

• The impact of international patent systems: Evidence from accession to the European Patent Convention

  Bronwyn H. Hall;Christian Helmers

  69
  Citations

• The effect of patent litigation insurance: theory and evidence from NPEs

  Bernhard Ganglmair;Christian Helmers;Brian J. Love

  65
  Citations

• Do Standard-Essential Patent Owners Behave Opportunistically? Evidence from U.S. District Court Dockets

  Brian Love;Yassine Lefouili;Christian Helmers

  59
  Citations

• Invalid but Infringed? An Analysis of Germany’s Bifurcated Patent Litigation System

  Katrin Cremers;Fabian Gaessler;Dietmar Harhoff;Christian Helmers

  56
  Citations

• An Empirical Analysis of Primary and Secondary Pharmaceutical Patents in Chile

  María José Abud;Bronwyn Hall;Christian Helmers

  52
  Citations

• What can explain the Chinese patent explosion

  Markus Eberhardt;Christian Helmers;Zhihong Yu

  42
  Citations

• The Choice between Formal and Informal Intellectual Property: A Literature Review

  Bronwyn H. Hall;Christian Helmers;Christian Helmers;Mark Rogers;Mark Rogers;Vania Sena

  33
  Citations

• Statistics on Modern Private International Cartels, 1990-2005

  John M. Connor;John M. Connor;C. Gustav Helmers

  20
  Citations