T 0860/93 (Protective coating compositions) of 29.12.1993

European Case Law Identifier: ECLI:EP:BA:1993:T086093.19931229
Date of decision: 29 December 1993
Case number: T 0860/93
Application number: 88115147.6
IPC class: C08B 11/193
Language of proceedings: EN
Distribution: A
Download and more information:
Decision text in EN (PDF, 484 KB)
Documentation of the appeal procedure can be found in the Register
Bibliographic information is available in: EN
Versions: OJ | Published
Title of application: Carboxymethyl hydrophobically modified hydroxyethylcellulose (cmhmhec) and use of cmhmhec in protective coating compositions
Applicant name: Aqualon Company
Opponent name: -
Board: 3.3.03
Headnote: 1. Where a quality is expressed in a claim as being within a given numerical range, the method for measuring that quality must either be general technical knowledge, so that no explicit description is needed, or a method of measuring that quality needs to be identified (decision T 124/85 of 14 December 1987 - not reported in OJ EPO - followed). In contrast, where a claim specifies a relative quality, in this case that the products should be "water-soluble", it is not normally necessary to identify any method for its determination.
2. The provision of Article 69(1) EPC, according to which the description and drawings shall be used to interpret the claims, applies also to the clarity requirement of Article 84 EPC, provided that the claims are not self-contradictory (decision T 454/89 of 11 March 1991 - not published in OJ EPO - explained).
Relevant legal provisions:
European Patent Convention 1973 Art 84
European Patent Convention 1973 Art 69
European Patent Convention 1973 R 67
Keywords: Claims - clarity
Catchwords:

-

Cited decisions:
T 0124/85
T 0050/89
T 0454/89
Citing decisions:
T 0324/92
T 0434/92
T 0785/92
T 0723/93
T 0884/93
T 0682/94
T 0337/95
T 0338/95
T 0860/95
T 0671/96
T 0287/97
T 0497/97
T 0751/97
T 1129/97
T 0908/98
T 0939/98
T 0592/99
T 0208/00
T 0250/00
T 0193/01
T 0545/01
T 0378/02
T 0467/02
T 0556/02
T 0056/04
T 0905/05
T 0931/06
T 1088/07
T 0375/08
T 0620/08
T 1545/08
T 1817/14
T 0997/15
T 1105/16

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Offical Journal of the EPO

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

Case Law Book: V Priority

General Case Law