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Date of decision
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30 January 1996
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Case number
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T 0337/95
- 3.3.1
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Application number
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90103338.1
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Title of the application
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3-(Substituted phenyl)pyrazole derivatives, salts thereof,
herbicides therefrom, and process for producing said derivatives
or salts
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Applicant name
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NIHON NOHYAKU CO., LTD.
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Headnote
1. Claims have to be clear for the sake of legal certainty (Nos.
2.2 to 2.4). 2. Since, in the absence of any unambiguous
reference point, a relative term such as "lower alkyl" in the
field of organic chemistry does not have a generally accepted
meaning with respect to its maximum number of carbon atoms, such
a term is ambiguous and therefore not suitable for clearly
defining the subject-matter for which protection is sought in a
claim which is directed to a group of organic compounds per se
(No. 2.8).
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Keywords
Clarity of claims for compounds per se
Meaning of 'lower alkyl' unclear
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