Perhaps this was the EUPL¹. As someone who works for a company that has occasionally been forced to use it for a contract, I'm pretty sure people don't choose it. Every time it has come up in a talk about a project, you have to answer basic questions about it :/

> But never one in the spirit of BSD/MIT/Apache

Nor me, but I've seen people mention the idea a few times in conversations about patents normally.

1. https://en.wikipedia.org/wiki/European_Union_Public_Licence