I am curious about the implications of this lawsuit for Free SW. Claiming copyright over the Java API is not that far from claiming copyright over a C header, a

I am curious about the implications of this lawsuit for Free SW. Claiming copyright over the Java API is not that far from claiming copyright over a C header, and most projects do just that. On the one hand, RMS has said that "just using structure definitions, typedefs, enumeration constants, macros with simple bodies, etc., is NOT enough to make a derivative work. It would take a substantial amount of code (coming from inline functions or macros with substantial bodies) to do that". On the other, I imagine that somebody could get in trouble for e.g. copying the files under linux/include and providing a proprietary implementation underneath (unlikely scenario, you get the point).