T 0246/91 (Gel-forming composition/OXY) of 14.9.1993

European Case Law Identifier: ECLI:EP:BA:1993:T024691.19930914
Date of decision: 14 September 1993
Case number: T 0246/91
Application number: 85900903.7
IPC class: C09K 7/02
Language of proceedings: EN
Distribution: B
Download and more information:
Decision text in EN (PDF, 405 KB)
Documentation of the appeal procedure can be found in the Register
Bibliographic information is available in: EN
Versions: Unpublished
Title of application: Gel and process for retarding fluid flow
Applicant name: Oxy USA Inc.
Opponent name: -
Board: 3.3.01
Headnote: -
Relevant legal provisions:
European Patent Convention 1973 Art 56
European Patent Convention 1973 Art 82
European Patent Convention 1973 Art 84
European Patent Convention 1973 R 29(5)
Keywords: Inventive step (acknowledged, after amendment)
Definition of the technical problem
Reasonable number of claims; undue burden on public if number is large
Catchwords:

What is a reasonable number of claims (Rule 29(5) EPC) depends on the facts and circumstances of each particular case. In the present application, to construe 157 claims imposes a severe and undue burden on the public (No. 7.2).

Cited decisions:
T 0495/91
Citing decisions:
T 0465/92
T 0881/92
T 0882/92
T 0884/92
T 1000/92
T 0039/93
T 0380/93
T 0410/93
T 0059/95
T 0274/96
T 0345/96
T 0922/96
T 0467/97
T 0644/97
T 0747/97
T 1179/97
T 0606/99
T 0693/99
T 1059/99
T 0504/00
T 0979/00
T 0576/06
T 0870/06
T 0217/07
T 0763/07
T 0993/07
T 2029/07
T 0182/08
T 0020/17
T 1861/17

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EPO Guidelines - F The European Patent Application

Case Law Book: II Conditions to be met by an Application

General Case Law