Reasonable and non-discriminatory (RAND) terms, also known as fair, reasonable, and non-discriminatory (FRAND) terms, denote a voluntary licensing commitment that standards organizations often request from the owner of an intellectual property right (usually a patent) that is, or may become, essential to practice a technical standard. Put differently, a F/RAND commitment is a voluntary agreement between the standard-setting organization and the holder of standard-essential patents. U.S. courts, as well as courts in other jurisdictions, have found that, in appropriate circumstances, the implementer of a standard—that is, a firm or entity that uses a standard to render a service or manufacture a product—is an intended third-party beneficiary of the FRAND agreement, and, as such, is entitled to certain rights conferred by that agreement.

A standard-setting organization is an industry group that sets common standards for its particular industry to ensure compatibility and interoperability of devices manufactured by different companies. A patent becomes standard-essential when a standard-setting organization sets a standard that adopts the technology that the patent covers.

Because a patent, under most countries' legal regimes, grants its owner an exclusive right to exclude others from making, using, selling, or importing the invention, a standard-setting organization generally must obtain permission from the patent holder to include a patented technology in its standard. So, it will often request that a patent holder clarify its willingness to offer to license its standard-essential patents on FRAND terms. If the patent holder refuses upon request to license a patent that has become essential to a standard, then the standard-setting organization must exclude that technology. When viewed in this light, the FRAND commitment serves to harmonize the private interests of patent holders and the public interests of standard-setting organizations. Many scholars have written about these topics, as well as a variety of other legal and economic issues concerning licensing on F/RAND terms.