In T620/08 trifft die technische Beschwerdekammer 3.3.01 einige interessante Aussagen zur Frage, wie Definitionen in der Patentbeschreibung zu bewerten sind.
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Concerning novelty of the claimed subject-matter, the Board agrees with the Opposition Division’s opinion that the claims should be read giving the words the meaning and scope which they normally have in the relevant art, unless the description gives the words a special meaning by explicit definition. Being a legal document a patent may be its own dictionary. It may define technical terms and determine how a skilled person has to understand a specific word when used in the description or the claims ...