> So, effectively, APIs are copyrightable if there is a linked patent claim in the same lawsuit.
I suspect the Supreme Court would not be happy if a pattern develops where companies include spurious patent claims in order to get their copyright case heard by the Federal Circuit instead of one of the other circuits. They won't want another mess like this case, and if the Federal Circuit again rules in favor of API copyright and against fair use, I would expect the Supreme Court to rule on the API copyright question directly rather than merely clarify the bounds of fair use as in this case.
I suspect the Supreme Court would not be happy if a pattern develops where companies include spurious patent claims in order to get their copyright case heard by the Federal Circuit instead of one of the other circuits. They won't want another mess like this case, and if the Federal Circuit again rules in favor of API copyright and against fair use, I would expect the Supreme Court to rule on the API copyright question directly rather than merely clarify the bounds of fair use as in this case.