Requirements statement in product design

One of the activities corresponding to the product design and development refers to clarifying the requirements necessary to be fulfilled by the final product. There are distinct opinions concerning the ways in which these requirements could be formulated and applied. The paper presents the results of a succinct analysis aiming to highlight the developing of product requirements in the case of applying the value analysis method and the axiomatic design method, respectively. The way in which the requirements are formulated in the case of a patent application is also considered. Results of the study were applied in the cases of designing some mechanical products.