You might be talking about "Essentially Patents"? > Standards organizations, therefore, often require members disclose and grant licenses to their patents and

You might be talking about "Essentially Patents"? > Standards organizations, therefore, often require members disclose and grant licenses to their patents and pending patent applications that cover a standard that the organization is developing. > https://en.m.wikipedia.org/wiki/Essential_patent https://en.m.wikipedia.org/wiki/Essential_patent Please not that this is less of a "You have to offer licenses or else" and more of a "Hey please do that."