| European Case Law Identifier: | ECLI:EP:BA:1993:T074191.19930922 | ||||||||
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| Date of decision: | 22 September 1993 | ||||||||
| Case number: | T 0741/91 | ||||||||
| Application number: | 82104427.8 | ||||||||
| IPC class: | C07C 65/11 | ||||||||
| Language of proceedings: | EN | ||||||||
| Distribution: | B | ||||||||
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| Title of application: | Process for preparation of 2-hydroxynaphathalene-3- carboxylic acid | ||||||||
| Applicant name: | Kabushiki Kaisha Ueno Seiyaku Oyo Kenkyujo | ||||||||
| Opponent name: | Hoechst Aktiengesellschaft | ||||||||
| Board: | 3.3.01 | ||||||||
| Headnote: | - | ||||||||
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| Keywords: | inventive step (yes) problem and solution comparative test - not expertly worked feature disclosed in old document disregarded among experts late submitted material - evidence admitted (no) |
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| Catchwords: |
1. A proper application of the so-called "problem-solution- approach" requires the avoidance of formulating artificial and unrealistic technical problems (following T 0495/91; No. 3.3 of the Reasons). 2. All embodiments falling within a process claim have to meet the requirements of patentability set out in Articles 52 to 57 EPC (No. 4.2 of the Reasons). 3. To be relevant, it is sufficient for experiments, which aim at establishing that the promised result cannot be obtained over the whole range of a claim that they are carried out according to the Claim and with the normal experience of the man skilled in the art (Nos.4.2 and 4.3 of the Reasons). 4. An experiment which was not expertly carried out is not credible and sufficient evidence that a claim comprises embodiments which do not solve the technical problem (No. 4.5 of the Reasons). |
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Source: http://www.epo.org/law-practice/case-law-appeals/recent/t910741eu1.html
Date retrieved: 17 May 2021