When is a search not a search? Part 2 – Non-unity, the EPO approach

Unity of Invention is one of those requirements of the EPC which are sometimes difficult to grasp. In this article an attempt is made to explain the unity reasoning applied by the EPO by using examples from daily life. Three types of reasoning (a quick approach, the single general inventive concept approach and the special technical features approach) are discussed. The procedural steps in relation to non-unity at the search and examination stages are also described. Whilst the following article comments on EPO procedure, it is the opinion of the authors alone, and is not an official EPO view.