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A graphical representation of the problem-solution approach (PSA) to the assessment of inventive step


  • Stellmach, Joachim A.


The significant advantage of applying the problem-solution approach to the assessment of inventive step of patent applications is that this approach, contrary to other approaches enables a complete abstraction and clear logic. Complete abstraction and clear logic are important conditions for an expert assessment of inventive step. The graphical presentation of concrete examples attempts to clarify why at least in chemistry the problem-solution approach corresponds exactly to the empirical structure-activity-relationships for compounds and structure-reactivity-relationships for chemical reactions very well known to the skilled person.

Suggested Citation

  • Stellmach, Joachim A., 2009. "A graphical representation of the problem-solution approach (PSA) to the assessment of inventive step," World Patent Information, Elsevier, vol. 31(1), pages 4-10, March.
  • Handle: RePEc:eee:worpat:v:31:y:2009:i:1:p:4-10

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    References listed on IDEAS

    1. Archontopoulos, Eugenio & Guellec, Dominique & Stevnsborg, Niels & van Pottelsberghe de la Potterie, Bruno & van Zeebroeck, Nicolas, 2007. "When small is beautiful: Measuring the evolution and consequences of the voluminosity of patent applications at the EPO," Information Economics and Policy, Elsevier, vol. 19(2), pages 103-132, June.
    2. Lazaridis, George & van Pottelsberghe de la Potterie, Bruno, 2007. "The rigour of EPO's patentability criteria: An insight into the "induced withdrawals"," World Patent Information, Elsevier, vol. 29(4), pages 317-326, December.
    3. Francesco SCHETTINO & Alessandro STERLACCHINI, 2007. "European Patenting and the Size of Inventors," Working Papers 308, Universita' Politecnica delle Marche (I), Dipartimento di Scienze Economiche e Sociali.
    4. Schettino, Francesco & Sterlacchini, Alessandro & Venturini, Francesco, 2013. "Inventive productivity and patent quality: Evidence from Italian inventors," Journal of Policy Modeling, Elsevier, vol. 35(6), pages 1043-1056.
    5. Harhoff, Dietmar & Wagner, Stefan, 2005. "Modelling the duration of patent examination at the European Patent Office," CEPR Discussion Papers 5283, C.E.P.R. Discussion Papers.
    6. Eric J. Iversen & Aris Kaloudis, 2006. "IP-Valuation as a Tool to Sustain Innovation," Chapters,in: The Management of Intellectual Property, chapter 13 Edward Elgar Publishing.
    7. Joachim Henkel & Stefanie Pangerl, 2008. "Defensive Publishing An Empirical Study," DRUID Working Papers 08-04, DRUID, Copenhagen Business School, Department of Industrial Economics and Strategy/Aalborg University, Department of Business Studies.
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