I use the open source font Metropolis as main font for my webpages.
However, apparently there has been a legal issue with similarities to Gotham.
See https://discourse.mozilla.org/t/metropolis-font-repo-missing/69415 for more infos. The author Chris Simpson had to put his Github repo to private.
I wondered if there now are any legal consequences for new and old projects which actively use this font. I actually still see it in use of many big players too, i.e. https://www.vmware.com