Henri’s daily practice mostly involves drafting and prosecution of patent applications for a broad variation of clients, ranging from start-ups, knowledge institutes, universities, SMEs and multinationals. He is also experienced in litigation before the Dutch patent courts and oral proceedings at the European and Dutch patent offices.

His technical expertise is generally in the field of chemistry and related fields, such as life sciences, material sciences, agriculture, pharmaceutical, medical devices and food sciences.

In his capacity as European Patent Litigator, Henri is allowed to act as UPC representative.

Working experience

• Patent Attorney, V.O. (2014-present)
• Post-doctoral researcher at École Supérieure de Chimie Physique Électronique (CPE) de Lyon (2013-2014)

Education

• PhD in Synthetic Organic Chemistry, Radboud University Nijmegen (2013)
• MSc in Organic Chemistry, Radboud University Nijmegen (2009)

Directories

• Recognized as ‘Rising Star’ (2020 – 2025) and as ‘IP Star’ (2026) by Managing IP

Publications

• D. W. P. M. Löwik, J. T. Meijer, I. J. Minten, H. A. van Kalkeren, L. Heckenmüller, I. Schulten, K. Sliepen, P. Smittenaar, J. C. M. van Hest, J. Pept. Sci. 2008, 14, 127-133
• P. J. L. M. Quaedflieg, T. Nuijens, J. G. de Vries, H. A. van Kalkeren, EP002107067A1, 2009
• D. C. J. Waalboer, H. A. van Kalkeren, M. C. Schaapman, F. L. van Delft, F. P. J. T. Rutjes, J. Org. Chem. 2009, 74, 8878-8881
• H. A. van Kalkeren, S. H. A. M. Leenders, C. R. A. Hommersom, F. P. J. T. Rutjes, F. L. van Delft, Chem. Eur. J. 2011, 17, 11290-11295
• H. A. van Kalkeren, J. J. Bruins, F. P. J. T. Rutjes, F. L. van Delft, Adv. Synth. Catal. 2012, 354, 1417-1421
• H. A. van Kalkeren, S. van Rootselaar, F. S. Haasjes, F. P. J. T. Rutjes, F. L. van Delft, Carbohydr. Res. 2012, 362, 30-37
• H. A. van Kalkeren, F. L. van Delft, F. P. J. T. Rutjes, Pure Appl. Chem. 2013, 85, 817-828
• H. A. van Kalkeren, A. L. Blom, F. P. J. T. Rutjes, M. A. J. Huijbregts, Green Chem. 2013, 15, 1255-1263
• H. A. van Kalkeren, F. P. J. T. Rutjes, F. L. van Delft, ChemSusChem 2013, 9, 1615-1624
• H. A. van Kalkeren, F. Haasjes, C. te Grotenhuis, C. A. Hommersom, F. P. J. T. Rutjes; F. L. van Delft, Eur. J. Org. Chem., 2013, 7059–7066

Languages

• Dutch (native)
• English (fluent)
• French (basic)
• German (basic