| http://www.w3.org/ns/prov#value | - If, on the other hand, the effect is wholly or partially known, e.g. the product is old or is a novel modification of an old structural part, the invention, i.e. the process or the intermediate therefor, should not merely consist of features which are already necessarily and readily derivable from the known part of the effect in an obvious manner having regard to the state of the art (cf. also Cy
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