When sharing your data, it is advisable to grant them an appropriate license. This guarantees you a number of rights, including the right to be cited for the authorship of your data. In addition, the potential user will then clearly know what use is allowed or not with your data.
In principle, data repositories allow you to choose the right license for you. It should be kept in mind that the more "open" a license is, the more it gives visibility to your data and therefore to your research work.
Further explanations can be found on the website of the Digital Curation Center.
The best way to promote the sharing and unlimited use of your data is to choose a reuse license. The most open Creative Commons license is the CC0 license. When you choose this license, you remove all barriers and place your work in the public domain. In any case, and in accordance with the principles of scientific integrity, you will be cited as the creator of the data.
For questions related to business issues, intellectual property or patents, you can contact the PACTT (Powering Academia-industry Collaborations and Technology Transfer).