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There is actually prior art; React is not the first public use of an immutable virtual DOM; a basically identical approach was presented at Clojure Conj Novembe

There is actually prior art; React is not the first public use of an immutable virtual DOM; a basically identical approach was presented at Clojure Conj November 2012 (React launched publicly in May 2013 iirc, though React was used on instagram.com in September 2012 [0]): https://github.com/drcode/webfui https://github.com/drcode/webfui https://www.youtube.com/watch?v=HeI5-D7SQe8 https://www.youtube.com/watch?v=HeI5-D7SQe8 If I found myself in a position where Facebook took away my access to React.js and to the patented ideas, does this help me at all? E.g. could I use this as a base and implement the immutable virtual dom myself, or looking into alternatives like mithril? [0] https://twitter.com/floydophone/status/427160179616927744 https://twitter.com/floydophone/status/427160179616927744 (Some edits)

saidajigumi 12y ago
> E.g. could I use this as a base and implement the immutable virtual dom myself, or looking into alternatives like mithril? Prior art is probably only going to help in the case that you're already embroiled in a legal battle over infringement. That or if a USPTO patent review were to occur (e.g. [1]). But it'd be best to not be a potential infringer at the same time you contest a Facebook patent, unless you want FB's legal team gunning for you in retaliation. That said, I think there are going to be a lot of developers who simply don't know about and/or ignore the existence of this patent and go merrily about their lives anyway. [1] http://appleinsider.com/articles/12/12/19/apple-pinch-to-zoom-patent-invalidated-by-uspto http://appleinsider.com/articles/12/12/19/apple-pinch-to-zoo...