CONTEXT: As part of its 2019-2023 Strategic Plan, the Institut Pasteur has set itself the objective of "promoting open access to research data" and adopted a policy on managing and sharing research data and software codes (“RDM Policy”). This policy entered into force on May 1, 2021 and is accessible here: https://www.pasteur.fr/fr/file/40524/download. The RDM policy included a series of practical guides and tools, in addition to new measures concerning data management plans (DMP), which in particular allow the identification of different types of research data, and enable a pre-analysis of the legal issues related thereto prior to any dissemination or re-use/re-utilization. In this matter, scientists are strongly encouraged to reuse existing research data before creating their own. It is therefore crucial to first of all consider a set of rules to ensure that any such reuse is made in compliance with the applicable laws and regulations in force. PURPOSE: In order to support scientists for the duration of their research projects, we have set up a flowchart template that lists the main legal issues to address before proceeding with the reuse or re-utilization of a dataset, respective rules applying to each data and relevant support teams. We propose to release it in a mutual effort to share operational capabilities and best practices among the research community. We would like to draw your attention to the fact that the template’s goal is to provide scientists with a guidance tool. It is not meant to be used as a standalone and autonomous tool for decision making. As such, scientists are encouraged to request counsel from respective support teams. SEE ALSO: Institut Pasteur’s flowchart template about legal issues related to research data dissemination. https://hal-pasteur.archives-ouvertes.fr/pasteur-03587219