The present work looks into the textual construction of the patent (very standardized specialized type of text) by the study of pragmatical constraints which structure it and in particular of the constraints which define it as a contribution in a Gricean (Grice), post-Gricean (Nemo, Portuguès) and non-Gricean (Clark and Schaefer) meaning. This work studies the textual strategies involved, particularly in terms of the rhetoric of claiming, by examining over its particular format in which are isolated recurring and autonomous elements, - the contributional sets, and their connections.The first part presents a contributional approach of patents as texts, describing patent text as a contributional object and discussing the way the confrontation with hyper-formatted and strongly constrained textual data may lead to reconsider and reformulate contributional maxims. The corpus of study consists of a textual data base of patents which is then formatted into contributional data. The analysis of this contributional data allows a contributional modeling of the patent text based on markers which defined contributional groups subject to general master scheme which is invariable, predictable and reproducible. This phase of modeling provides an opportunity to partly reformulate the Gricean maxims which frame the production of the contributional groups. Using a plurisemic approach of interpretation, the end of the study intends to release the properties of the contributional layer, by showing in particular that the constraint of exhaustivity which is at work in the construction of the text through various sub-contributions leads to the emergence of a mechanical text, with its laws and constraints, based on contributional chains specific to very formatted texts and more general texts alike. These considerations on the contributional material of the texts allow an approach to the foundations of a contributional theory of text.
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