T 0197/86 (Photographic couplers) of 4.2.1988

European Case Law Identifier: ECLI:EP:BA:1988:T019786.19880204
Date of decision: 04 February 1988
Case number: T 0197/86
Application number: 80303642.5
IPC class: G03C 7/34
Language of proceedings: EN
Distribution: A
Download and more information:
Decision text in EN (PDF, 708 KB)
Documentation of the appeal procedure can be found in the Register
Bibliographic information is available in: EN
Versions: OJ | Published
Title of application: -
Applicant name: Kodak
Opponent name: Agfa Gevaert
Board: 3.3.02
Headnote: In the case where comparative tests are chosen to demonstrate an inventive step with an improved effect over a claimed area, the nature of the comparison with the closest state of the art must be such that the effect is convincingly shown to have its origin in the distinguishing feature of the invention. For this purpose it may be necessary to modify the elements of comparison so that they differ only by such a distinguishing feature (supplementing T 181/82, "Spiro compounds", OJ EPO 1984, 401) (cf. point 6.1.3 of the Reasons).
Relevant legal provisions:
European Patent Convention 1973 Art 56
Keywords: Inventive step (yes)
Comparative tests, prerequisites therefor
Catchwords:

-

Cited decisions:
-
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Source: http://www.epo.org/law-practice/case-law-appeals/recent/t860197ex1.html

Date retrieved: 17 May 2021

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