[doctorless]

I think we read a different FAQ, or I'm misreading your link. The FAQ says that if Facebook sues _you_ for patent infringement and you counter sue for patent infringement that they won't revoke your license, but I don't see anything that answers the parent comment's concern.

[Lazare]

> Does termination of the additional patent grant in the Facebook BSD+Patents license cause the copyright license to also terminate?

> No.

In short, if you get into a patent dispute with them, your license to use React does not terminate.

So when someone says "if you sue you will lose your rights to use react" this is wrong. My rights to use React come from the BSD license, not from the patent grant.

[doctorless]

It's not entirely wrong. If you get into a patent dispute with them, you lose the patent grant to React, which means if they have any (none have been seen yet) patents related to React, they can very quickly countersue you, making the patent suit from your end, while still valid, a guaranteed financial ruin for any business not on their scale. We're not saying the license + patents combination explicitly grants Facebook the right to infringe on your patents, but rather it's a trap clause that makes it impossible to survive a patent lawsuit against them by virtue of using React, which in _effect_ is like a patent grant back to them.

[gstein67]

Exactly. You'll be using the React code under the BSD license but without any patent grants.