Every year up to 2,68m patent applications are submitted worldwide [1] and the wealth of technology contained in patent documents cannot be rated high enough. Handling intellectual property necessarily involves the process of correctly describing the innovation in the body of the most important part of a patent document, - patent claims, the only part of a patent that defines the scope of inventor’s rights. Linguistically, the claim is the most difficult information carrier due to the restrictions that Patent law imposes on the claim structure. The claim is to be written as a single albeit very complex and long sentence, with a well-specified conceptual, syntactic and stylistic/rhetorical structure that is extremely difficult even for patent