Open source is just a blanket term for a variety of different licenses with different limitations. Earlier court decisions didn't see the GPL license invalidati

Open source is just a blanket term for a variety of different licenses with different limitations. Earlier court decisions didn't see the GPL license invalidating API copyrights. I guess a poor analogy is that you can use linux code all day long but the Linux trademark is not yours. Nor does Linus personally give you immunity from patents that code might infringe on.